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

A diesel hydrotreating catalyst and its preparation method and application

A technology for hydrorefining and catalyst, applied in molecular sieve catalysts, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problems of waste of metal salts, easy precipitation, and low stability of impregnation solution. , to achieve the effect of improving the hydrodesulfurization activity and reducing the cost

Active Publication Date: 2021-03-30
PETROCHINA CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of diesel oil hydrofinishing catalyst and its preparation method and application, to solve the waste of metal salt easily caused in the preparation method of diesel oil hydrofinishing catalyst in the prior art, simultaneously the stability of soaking liquid is not high, Especially the problem of easy precipitation at high concentrations

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A diesel hydrotreating catalyst and its preparation method and application
  • A diesel hydrotreating catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Take 50g of pseudo-boehmite and 30g of TS-1 molecular sieve, and mix them evenly. Add 4g of scallop powder, mix well, dropwise add an aqueous solution containing 4g of nitric acid and 4g of citric acid and knead, extrude into a clover shape of 1.5mm, freeze-dry, and then roast at 550°C for 4h to make a carrier. Use Ni again 6 [WNi 3 (H 2 O) 2 (ZnW 9 o 34 ) 2 ] The impregnated solution was impregnated with equal volume, freeze-dried, and calcined at 400°C for 4h to obtain catalyst A.

Embodiment 2

[0048] Take 70g of pseudo-boehmite and 20g of TS-1 molecular sieve, and mix them evenly. Add 4g of scallop powder, mix well, dropwise add an aqueous solution containing 4g of nitric acid and 4g of citric acid and knead, extrude into a clover shape of 1.5mm, freeze-dry, and then roast at 550°C for 4h to make a carrier. Use Ni again 6 [WNi 3 (H 2 O) 2 (ZnW 9 o 34 ) 2 ] The impregnated solution was impregnated with an equal volume, freeze-dried, and calcined at 400°C for 4h to obtain Catalyst B.

Embodiment 3

[0050] Take 50g of pseudo-boehmite and 35g of TS-1 molecular sieve, and mix them evenly. Add 4g of scallop powder, mix well, dropwise add an aqueous solution containing 4g of nitric acid and 4g of citric acid and knead, extrude into a clover shape of 1.5mm, freeze-dry, and then roast at 550°C for 4h to make a carrier. Use Ni again 6 [WNi 3 (H 2 O) 2 (ZnW 9 o 34 ) 2 ] impregnated with equal volumes of the prepared impregnating solution, freeze-dried, and calcined at 400°C for 4 hours to obtain catalyst C.

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
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a diesel hydrorefining catalyst and its preparation method and application. In terms of weight percentage, the catalyst contains 10 to 50% molecular sieve, γ-Al 2 O 3 10-70% and heteropolyacid 10-40% based on metal oxide. The catalyst can be used for diesel hydrorefining and has high diesel hydrodesulfurization activity.

Description

technical field [0001] The invention relates to a diesel hydrorefining catalyst and its preparation method and application, which are suitable for the diesel hydrorefining process in the petroleum refining field. Background technique [0002] In 2017, my country fully implemented the National V vehicle diesel standard, and plans to implement the National VI vehicle diesel standard in 2019. Hydrodesulfurization is the main method to reduce the sulfur content in diesel raw materials. It can carry out reactions such as hydrodesulfurization, hydrodenitrogenation, and olefin saturation at the same time to produce national V diesel or its blended components. [0003] At present, most of diesel hydrotreating catalysts are supported catalysts, the active components are one or more of W, Mo, Ni, and Co, and the carrier is generally alumina or modified alumina. Active metals are generally loaded on the carrier by impregnation method. The preparation of the impregnation solution is m...

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): B01J31/16B01J27/188B01J35/10C10G45/12
CPCC10G45/12B01J27/188B01J29/89B01J2229/18C10G2300/202C10G2400/04B01J35/635B01J35/615
Inventor 徐铁钢马宝利温广明方磊谭明伟徐伟池宋金鹤王丹丛丽茹张全国田然关旭李铭阳孙发民王刚郭金涛郭立艳周景伦张维燕方安张振泰
Owner PETROCHINA CO LTD