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Hydrodenitrogenation catalyst capable of removing nitrogen-containing compound from coal tar, and preparation method and application thereof

A nitrogen compound, hydrogenation and denitrification technology, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as pollution, lack of cleanliness, large-scale utilization of technology, waste of resources, etc., and achieve water resistance Good performance, good hydrodesulfurization performance, good denitrification effect

Active Publication Date: 2014-04-16
山西中科化美科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, medium and low temperature coal tar is mostly used after direct combustion or simple treatment, and there is still a lack of clean and large-scale utilization technology, which greatly wastes resources and produces a lot of pollution.

Method used

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  • Hydrodenitrogenation catalyst capable of removing nitrogen-containing compound from coal tar, and preparation method and application thereof
  • Hydrodenitrogenation catalyst capable of removing nitrogen-containing compound from coal tar, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A hydrodenitrogenation catalyst capable of removing nitrogen-containing compounds from coal tar is composed of an active component, an additive and a carrier, and the active component is composed of tungsten trioxide, nickel monoxide and chromium trioxide, and the content of the tungsten trioxide is 15wt% of the catalyzer, the nickel monoxide content is 5wt% of the catalyzer, and the dichromium trioxide content is 3.5wt% of the catalyzer; the auxiliary agent is fluorine and phosphorus, and in elemental calculation, the fluorine content is 3.2wt% of the catalyzer, so Described phosphorus content is 1.6wt% of catalyzer; Carrier is made up of aluminum oxide, zirconium oxide, Hβ molecular sieve, binding agent and extrusion aid, calculates on a dry basis, and described carrier content is 73wt% of catalyzer, and described alumina, The weight ratio of zirconia and Hβ molecular sieve is 15.8:1.6:2.2, the weight of the binder is 5% of the weight of the alumina, and the content of...

Embodiment 2

[0031] A hydrodenitrogenation catalyst capable of removing nitrogen-containing compounds from coal tar is composed of an active component, an additive and a carrier, and the active component is composed of tungsten trioxide, nickel monoxide and chromium trioxide, and the content of the tungsten trioxide is 17wt% of the catalyzer, the nickel monoxide content is 5wt% of the catalyzer, and the dichromium trioxide content is 2.5wt% of the catalyzer; the auxiliary agent is fluorine and phosphorus, and in elemental calculation, the fluorine content is 2.5wt% of the catalyzer, so Described phosphorus content is 1.5wt% of catalyzer; Carrier is made up of alumina, zirconium oxide, Hβ molecular sieve, binding agent and extrusion aid, calculates on dry basis, and described carrier content is 69wt% of catalyzer, and described alumina, The weight ratio of zirconia and Hβ molecular sieve is 16:1.5:2.5, the weight of the binder is 7% of the weight of the alumina, and the content of the extrus...

Embodiment 3

[0040] Weigh 1000 g of alumina precursor pseudoboehmite, 103 g of zirconia, 162 g of Hβ molecular sieve and NH 4 F 25 g and mix evenly, then add 100 g of pseudo-boehmite binder, 16 g of squash gum, 48 g of acetic acid, and 774 g of distilled water into the above mixture, knead in a kneader for 150 min, put Extrusion molding in strip machine. Then dry at 40 °C for 4 h, and then dry at 100 °C for 10 h, then raise the temperature to 650 °C at a heating rate of 1 °C / min, and roast for 8 h to obtain 1027 g of the finished carrier. Calculated on a dry basis, alumina accounts for 75% of the total weight of the carrier , zirconia accounts for 10% of the total weight of the carrier, and Hβ molecular sieve accounts for 15% of the total weight of the carrier.

[0041] Add 307 g of ammonium metatungstate, the precursor of tungsten trioxide, 343 g of nickel nitrate, the precursor of nickel monoxide, and 309 g of chromium nitrate, the precursor of chromium trioxide, into 575 g of distilled...

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Abstract

The invention belongs to the technical field of catalysts for hydrodenitrogenation of coal tar. The technical problem to be solved is to provide a hydrodenitrogenation catalyst capable of deeply removing a nitrogen-containing compound from coal tar and provided with high mechanical strength, wear resistance and water resistance, and a preparation method and application thereof. The invention adopts the technical scheme that in the hydrodenitrogenation catalyst capable of removing nitrogen-containing compound from coal tar, active components consist of tungsten trioxide, nickel monoxide and chromium sesquioxide; aids comprise fluorine and phosphorus; and a carrier consists of aluminum oxide, zirconium oxide, a Hbeta molecular sieve, a binder and an extrusion aid. By adopting the hydrodenitrogenation catalyst capable of deeply removing the nitrogen-containing compound from the coal tar, the oil nitrogen content of the hydrogenation product can be reduced to be below 50 micrograms / gram; and the hydrodenitrogenation property is high, so that the oil sulfur content of the hydrogenation product can be reduced to be below 40 micrograms / gram.

Description

technical field [0001] The invention belongs to the technical field of catalysts for hydrodenitrogenation of coal tar. Background technique [0002] Coal tar is a liquid product produced during the pyrolysis process of coal. According to the pyrolysis temperature, it can be divided into high-temperature tar (900-1000°C), medium-temperature tar (700-900°C), and low-temperature tar (500-700°C). At present, the annual output of high-temperature coal tar in my country is about 10 million tons, mainly produced in high-temperature coking industry, and the annual output of medium-low temperature coal tar is also several million tons, mainly produced in coal pyrolysis semi-coke industry and coal gasification industry. In the foreseeable future, the development of large-scale clean and efficient cascade utilization technology of low-rank coal, which is guided by pyrolysis to produce medium and low temperature coal tar, will produce a larger amount of medium and low temperature coal ta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/78C10G45/12
Inventor 邱泽刚崔海涛武行洁
Owner 山西中科化美科技有限责任公司
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