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A catalyst recovery and loading method

A catalyst and compound technology, applied in chemical instruments and methods, catalyst regeneration/reactivation, physical/chemical process catalysts, etc., can solve problems such as poor dispersion, low catalyst loading rate, and complicated two process steps, so as to improve loading efficiency , Increase the effect of the active site

Active Publication Date: 2016-03-23
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, the catalyst loading process and the catalyst recovery process need to be carried out separately in the coal catalytic gasification technology, and there are defects such as low catalyst loading rate, poor dispersion, and complicated two process steps.

Method used

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Experimental program
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Effect test

Embodiment 1

[0060] Soluble catalyst recovery: 30g ash (after analysis, K in the ash + The content is equivalent to 10gK 2 CO 3 Medium K + content) was first washed with 100ml water, and the obtained product contained soluble K + The water washing solution of the catalyst is used for standby.

[0061] Insoluble catalyst recovery and catalyst loading: Put 100g of coal and washed ash into 150g of water together with the prepared 10g of Ca(OH) 2 100ml of the suspension was poured into a reaction kettle, heated to 300°C, stirred, and kept at a constant temperature for 2h.

[0062] Hydrothermal impregnation loading of soluble catalysts: will contain soluble K + Put 90-100ml of water washing solution of the catalyst into the above-mentioned reaction kettle, raise the temperature to 180°C, impregnate and load the catalyst under hydrothermal conditions, keep the temperature for 0.5h, and put the coal into an oven to dry at 120°C for 12h after impregnation. Sampling for later use.

Embodiment 2

[0064] Soluble catalyst recovery: 30g ash (after analysis, K in the ash + The content is equivalent to 10gK 2 CO 3 Middle K + content) was first washed with 150ml water, and the obtained product contained soluble K + The water washing solution of the catalyst is used for standby.

[0065] Insoluble catalyst recovery and catalyst loading: Put 100g of coal and washed ash into 150g of water together with the prepared 10g of Ca(OH) 2 100ml of the suspension was poured into a reaction kettle, heated to 400°C, stirred, and kept at a constant temperature for 1h.

[0066] Soluble catalyst impregnated load at room temperature: will contain soluble K + Put 90-100ml of water washing solution of the catalyst into the above reaction kettle, stir at room temperature 20°C for 4h, then put the coal into an oven and dry at 120°C for 12h. Sampling for later use.

Embodiment 3

[0068] Soluble catalyst recovery: 30g ash (after analysis, K in the ash + The content is equivalent to 10gK 2 CO 3 Medium K + content) was first washed with 100ml water, and the obtained product contained soluble K + The water washing solution of the catalyst is used for standby.

[0069] Insoluble catalyst recovery and catalyst loading: Put 100g of coal and washed ash into 150g of water together with the prepared 8g of Ca(OH) 2 and 3.6g CaSO 4 Pour 100ml of the suspension into a reaction kettle, heat to 200°C, stir, and keep the temperature constant for 4h.

[0070] Soluble catalyst impregnated load at room temperature: will contain soluble K + Put 90-100ml of water washing solution of the catalyst into the above reaction kettle, stir at room temperature 25°C for 1h, then put the coal into an oven and dry at 120°C for 12h. Sampling for later use.

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Abstract

The invention discloses a catalyst recovering and loading method relating to the technical field of catalytic coal gasification, capable of simultaneously realizing loading of a catalyst and recovering of the catalyst, and high in loading rate and good in dispersity of the catalyst. The catalyst recovering and loading method comprises the following steps: 1, washing gasification slag containing the catalyst with water to obtain a water solution containing a soluble catalyst and ash slag containing an insoluble catalyst; 2, adding the ash slag, alkaline-earth metal compounds, coal and water into a reactor, keeping the reactor at first preset temperature, maintaining the constant temperature for a first preset time so that the insoluble catalyst in the ash slag and the alkaline-earth metal compounds generate a digestion reaction and a soluble catalyst formed after digestion is adsorbed by coal; 3, conveying the water solution containing the soluble catalyst to the reactor, and keeping the reactor at second preset temperature and maintaining the constant temperature for a second preset time, performing secondary loading of the catalyst; 4, drying the coal loaded with the catalyst and the ash slag. The catalyst recovering and loading method is suitable for preparation of raw materials of a catalytic coal gasification process.

Description

technical field [0001] The invention relates to the technical field of coal catalytic gasification, in particular to a catalyst recovery and loading method. Background technique [0002] As a fossil resource with abundant reserves, coal occupies an important position in the energy structure. Coal gasification is one of the important ways of efficient and clean utilization of coal. Among them, the catalytic coal gasification technology has become the most promising coal efficient and clean conversion technology among many coal gasification technologies due to its advantages such as low reaction temperature, high gasification efficiency, and good product composition. [0003] Coal catalytic gasification means that the catalyst and coal particles are mixed in a certain proportion, and the catalyst is distributed on the coal surface and eroded and grooved to form catalytic active sites, so that the coal and the gasification agent can be in better contact, thereby accelerating t...

Claims

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Application Information

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IPC IPC(8): B01J38/00B01J38/48B01J38/68
Inventor 陈兆辉刘雷裴增楷李克忠郑岩毕继诚
Owner ENN SCI & TECH DEV
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