Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation and application method of a catalyst for producing ultra-clean low-freezing diesel oil

A catalyst and diesel technology, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of general desulfurization and denitrification effects of catalysts, and achieve high diesel yield and good selectivity

Inactive Publication Date: 2015-11-11
四川省中明环境治理有限公司 +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has a good effect of hydrogen point depressing, but the catalyst has a general desulfurization and denitrification effect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The preparation method of catalyst of the present invention is as follows:

[0039] (1) Synthetic SAPO-11 molecular sieve, molar ratio: Al 2 o 3 :P 2 o 5 : DPA: 0.3SiO2 2 : 65H 2 O,

[0040] Mix 250g of water and 47.6g of pseudo-boehmite (SB powder), stir; mix 77.5g of phosphoric acid and 80g of water and add dropwise to the mixture of SB powder and water, and stir for more than 4 hours after the dropwise addition; then add template agent 2 dropwise 34.7g of n-propylamine, stirred for more than 2 hours, then added dropwise 23.3g of silica sol (SiO 2 content 26%), stirred for more than 2 hours, put into a kettle, crystallized at 200°C for 48h, then centrifuged, washed, dried overnight at 120°C, and roasted at 550°C for 24h.

[0041] (2) Fully mix the synthesized 35g SAPO-11 molecular sieve and 15g SB powder, add scallop powder, add nitric acid aqueous solution dropwise, and extrude into a paste.

[0042] (3) According to the Ni / W atomic ratio of 1:1, add 44.4g ba...

Embodiment 2

[0046] The preparation method of catalyst of the present invention is as follows:

[0047] (1) The ZSM-22 molecular sieve was calcined at 550°C for 12 hours to remove the template agent, and then ion exchange was performed. Dissolve 80g of ammonium nitrate in 1L of water, then add 100g of ZSM-22 molecular sieve, exchange at 80°C for 4h, wash and dry after exchange, and then roast at 550°C for 4h, repeat 3 times.

[0048] (2) Using NH 4 F aqueous solution modified ZSM-22 by hydrothermal treatment. Add 6.67g NH to 1.2L water 4 F (NH 4 The concentration of F aqueous solution is 0.15mol / ), and then add 80g ZSM-22 molecular sieve, hydrothermal reaction at 80°C for 4h, filter, wash, dry, and roast at 550°C for 4h to obtain NH 4 F modified ZSM-22 molecular sieve.

[0049] (3) Add 88.7g of basic nickel carbonate, 53.1g of ammonium metatungstate, and 76.6g of ammonium molybdate to 500ml of distilled water, then add 15g of Ni / Mo / W atomic ratio of 2:1:1. Cyanine powder, stirred and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to a catalyst for producing ultraclean diesel with a low freezing point and a preparation method of the catalyst. The catalyst comprises hydrogenation active metal ingredients of the VIB group and / or the VIII group, molecular sieves and high-temperature resistant oxides. The method comprises the following steps: firstly preparing a porous CoMoNiW oxide; subsequently mixing the molecular sieves and the high-temperature resistant oxides, adding an adhesive solvent and extruding into pastes; then kneading, extruding and forming the CoMoNiW oxide and the pastes; and finally drying and roasting to obtain the catalyst. The method can be used for preparing the catalyst with different hydrogenation active metal ingredients, especially the catalyst with a high content of hydrogenation ingredient. The preparation method of the catalyst is simple. The catalyst prepared by the method is large in specific surface area and pore volume, smooth in catalyst channels and high in alkane isomerization selectivity. The catalyst is used for producing ultraclean diesel with the low freezing point by taking straight-run diesel or hydrofining diesel with low content of sulphur as the raw material.

Description

technical field [0001] The invention relates to a non-precious metal alkane isomerization catalyst and a preparation method thereof, more specifically a catalyst which can be used to produce ultra-clean low-condensation diesel and a preparation method and an application method thereof. Background technique [0002] Most parts of China are in the northern temperate zone, and the winter temperature in the northeast, north and northwest regions is relatively low, and -35# and -20# diesel oils need to be used for about 4 to 6 months a year, so the demand for low-condensation diesel oil in the Chinese market is relatively large. Big. [0003] With the revitalization of the Northeast old industrial base and the implementation of the Western Development Strategy, as well as the improvement of people's living standards and the development of industrial modernization, the oil consumption in the alpine regions in winter has increased rapidly, resulting in a stable and moderate proport...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/85B01J29/78B01J29/80C10G49/08
Inventor 柳云骐潘原马海灵王金华何中明
Owner 四川省中明环境治理有限公司