Catalyst and treatment method for upgrading tar by using catalyst

A treatment method and catalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, tar extraction and processing through chemical methods, etc., can solve problems in the laboratory research stage, reduce oxygen atom content, and low catalyst activity. Achieve high-efficiency aromatic etherification catalytic conversion, increase solubility, and high catalytic activity

Inactive Publication Date: 2013-12-18
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to defects in the preparation process, the existing catalysts have problems such as low selectivity, low yield, complex preparation process, and high production cost, which are bottleneck factors restricting the industrialization of phenol and alcohol high-temperature gas-phase catalytic conversion to prepare aromatic ethers.
[0006] Catalytic cracking deoxygenation is to selectively catalyze the breakage of oxygen-containing chemical bonds through catalysts under the condition of no external hyd

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Catalyst preparation: 30ml concentration is 11.8wt% K 2 CO 3 Add the aqueous solution dropwise to 20g of γ-Al with a particle size of 1-2mm 2 o 3 On the granules, the dropwise addition is completed and dried naturally for 24 hours, then dried at 120°C for 12 hours, then transferred to a muffle furnace for 700°C roasting for 8 hours, and cooled in a desiccator to obtain γ-Al 2 o 3 potassium salt catalyst.

[0041] Phenol-alcohol high-temperature gas-phase etherification conversion: the creosote oil obtained by atmospheric distillation of wood tar and methanol are mixed according to a mass ratio of 1:1, and 20g of catalyst is placed in the middle of a fixed-bed tubular reactor, and then the reaction mixture is passed through a peristaltic The pump is sent in from the inlet of the fixed bed tubular reactor, and the reactant system flows through the catalyst bed placed in the fixed bed and undergoes conversion reaction. The gas phase product obtained flows out from the ...

Embodiment 2

[0043] Catalyst preparation: 30ml concentration is the K of 12.1wt% 3 PO 4 Add the aqueous solution dropwise to 20g of γ-Al with a particle size of 1-2mm 2 o 3 On the granules, the dropwise addition is completed and dried naturally for 24 hours, then dried at 120°C for 12 hours, then transferred to a muffle furnace for 700°C roasting for 8 hours, and cooled in a desiccator to obtain γ-Al 2 o 3 potassium salt catalyst.

[0044] Phenol-alcohol high-temperature vapor-phase etherification conversion: wood tar and methanol are stirred and mixed according to a mass ratio of 1:1, and 20g of catalyst is placed in the middle of the fixed-bed tubular reactor, and then the reaction mixture is transferred from the fixed-bed tubular reactor through a peristaltic pump. The reactant system flows through the catalyst bed placed in the fixed bed and undergoes a conversion reaction. The gas phase product obtained flows out from the outlet of the tubular reactor and enters the condensation s...

Embodiment 3

[0046] Catalyst preparation: 30ml concentration is the K of 28wt% 3 PO 4 Add the aqueous solution dropwise to 20g of γ-Al with a particle size of 1-2mm 2 o 3 On the granules, the dropwise addition is completed and dried naturally for 12 hours, then dried at 140°C for 8 hours, then transferred to a muffle furnace for 800°C roasting for 9 hours, and cooled in a desiccator to obtain γ-Al 2 o 3 potassium salt catalyst.

[0047] Phenol-alcohol high-temperature gas-phase etherification conversion: Stir and mix coal tar and methanol at a mass ratio of 1:3, and place 20g of catalyst in the middle of a fixed-bed tubular reactor, and then transfer the reaction mixture from the fixed-bed tubular reactor through a peristaltic pump The reactant system flows through the catalyst bed placed in the fixed bed and undergoes a conversion reaction. The gas phase product obtained flows out from the outlet of the tubular reactor and enters the condensation system, and is cooled to become a liqu...

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PUM

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Abstract

The invention relates to a catalyst and a method for treating tar by using the catalyst. The catalyst is an alkali metal salt loaded catalyst and is prepared through the following steps: dropwise adding an alkali metal salt solution on a carrier particle to uniformly soak the particle by the solution, drying and roasting the particle, and cooling the roasted particle to obtain the alkali metal salt loaded catalyst. The method for treating the tar comprises the following steps: mixing the tar and small molecule alcohol, carrying out high-temperature gas-phase catalytic conversion treatment, and subjecting the creosote ingredient in the tar and the small molecule alcohol to etherification reaction by using the catalyst provided by the invention to convert the creosote in the tar to aromatic ether. The method is conductive to the increase of the caloricity and oil phase solubility of the tar and the reduction of the acidity and corrosivity of the tar. The catalyst preparation technology and tar treatment technology provided by the invention are simple and efficient, the raw material cost and the running cost are low, and the industrialized production is easily achieved. The raw materials and technological processes for the catalyst preparation and tar treatment are pollution-free and environment-friendly.

Description

technical field [0001] The invention relates to a catalyst and a treatment method for upgrading tar oil by using the catalyst, in particular to a catalyst for etherification reaction of creosote components in tar oil, and the conversion of tar and alcohol to obtain heat value and oil phase Process for tar treatment of heteroether-rich components with increased solubility, reduced acidity and reduced corrosivity. Background technique [0002] Tar is a black or dark brown viscous liquid obtained during the dry distillation of coal or biomass. It has a special odor, is flammable and corrosive, and is a complex mixture of highly aromatic hydrocarbons. Inexpensive source of fuel and valuable chemical resource. However, tar, especially low-temperature pyrolysis tar, is rich in creosote components containing a large number of oxygen atoms, resulting in lower calorific value and higher acidity of tar, which limits its direct application as liquid fuel, so it must be refined to redu...

Claims

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Application Information

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IPC IPC(8): B01J27/232B01J27/18C10C1/20C10G29/08C10G29/12
Inventor 王泽党丹宋文立林伟刚李松庚
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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