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Production art work of cellular catalyst carrier using natural zeolite as principal raw material

The invention relates to a honeycomb catalyst and a manufacturing process technology, which is used in the chemical production of inorganic and solid materials, and the production process of high-efficiency honeycomb catalyst carriers, and can solve the problems affecting the use effect and life, the alumina coating is easy to peel off, and the production cost is high. , to achieve the effect of improving catalytic conversion rate, large specific surface area of ​​finished products, and high specific surface area

Inactive Publication Date: 2007-02-28
胡琳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The cordierite (Mg 2 Al 4 Si 5 o 18 ) to make a honeycomb catalyst carrier, both of which are two-step production methods. Not only the process is complicated, but the production cost is high, and the alumina coating is easy to peel off, causing the activity to be lost, affecting the use effect and life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take 30kg of 200-mesh zeolite powder treated with dilute hydrochloric acid with a molar concentration of 2.5mol / L, put it into a mixer, start the mixer and add 15kg of pottery clay, 4kg of mixed rare earth oxides, 2kg of methylcellulose and 2kg of water in sequence, and mix thoroughly uniform. Put the mixture into a vacuum kneader, knead repeatedly and put it into a mold to extrude into a honeycomb shape. Put the formed honeycomb body into the activation furnace, raise the temperature to 100°C at a heating rate of 5°C / min and keep the furnace temperature for 3 hours, and then slowly increase the furnace temperature to 600°C after it is fully baked, and keep the temperature for 4 hours , and then cooled to room temperature to obtain a yellowish honeycomb carrier. Measure the various indicators of the product, and the overall size is 50×50×50mm 3 , the pore diameter is 1.5mm, and the pore density is 27 / cm 2 , the channel wall thickness is 0.35-0.40mm, the free cross-se...

Embodiment 2

[0023] Use the same operation as in Example 1, except that the baking temperature is controlled at 200°C for 2 hours. Finally, the various indicators of the product are measured, and the obtained data parameter indicators are within the control range.

Embodiment 3

[0025] With the same operation as Example 1, the difference is to adjust the proportioning of each component. Get 40kg of 200-mesh zeolite powder treated with dilute hydrochloric acid, 10kg of clay, 3kg of mixed rare earth oxides, 2kg of methyl cellulose, and 2kg of water. Finally, the various indicators of the product are measured, and the obtained data parameter indicators are within the control range.

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PUM

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Abstract

The invention discloses a preparing craft of high-effective honeycomb catalyst carrier, which comprises the following steps: grinding natural zeolite into powder bulk, injecting in the dilute hydrochloric acid to stir evenly, stewing, bleaching the zeolite to neutral through water, adding pottery clay, composite rare earth oxide and cellulose methyl in the zeolite powder, blending evenly in the vacuum pitching machine, squeezing to obtain the honeycomb semi-conductor, placing the honeycomb semi-conductor in the activated furnace, drying at low temperature, heating to 500-600deg.c, cooling to obtain the product.

Description

technical field [0001] The invention relates to a manufacturing process of a high-efficiency honeycomb catalyst carrier, in particular to a manufacturing process of a honeycomb catalyst carrier with natural zeolite as the main raw material, and belongs to the technical field of manufacturing inorganic and solid material chemistry. Background technique [0002] The catalyst carrier is the support of the catalyst material. The catalyst material is coated on its surface and together with the catalyst to form various catalytic devices, which are widely used in chemical industry, environmental protection, thermal power generation and other industries, such as automobile exhaust purifier. In order to improve the performance of the catalyst, the specific surface area of ​​the carrier must be enlarged, usually made into a honeycomb shape. [0003] At present, most of the honeycomb catalyst supports commonly used in the market are based on cordierite (Mg 2 Al 4 Si 5 o 18 ) as the...

Claims

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Application Information

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IPC IPC(8): B01J29/06B01J35/04
Inventor 胡琳胡珺
Owner 胡琳
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