Substrate applicable to corrugated denitration catalyst and forming preparation method of catalyst

Abstract

The invention discloses a substrate applicable to a corrugated denitration catalyst and a forming preparation method of the catalyst. The substrate comprises, in weight percent, 53% -56% of SiO2, 27%-30% of CaO, 12%-15% of Al2O3 and 1%-3% of MgO. According to the substrate, a corrugated molding control technique is adjusted, and technical indexes of a felt are continually optimized and adjusted inthe using process, so that corrugated plates meeting corrugated catalyst requirements can be formed by domestic glass fiber felts.

Description

technical field

[0001] The invention belongs to the technical field of catalysts, and relates to a substrate used in catalysts, in particular to a substrate suitable for corrugated denitration catalysts and a molding preparation method thereof. Background technique

[0002] In the existing technology, there are many technologies for controlling NOx. Selective catalytic reduction technology (SCR) is the most mature, efficient and widely used flue gas denitrification technology at home and abroad. The core of this technology is the catalyst. According to the catalyst structure, SCR catalysts can be divided into honeycomb type, plate type and corrugated type. Compared with the traditional honeycomb or flat denitration catalyst, the corrugated denitration catalyst mainly uses glass fiber felt as the base material, and combines the strengths of the two catalysts in the manufacturing process and structure, such as two shots, anti-wear, anti-poisoning, etc. has great advantages. ...

Examples

preparation example Construction

[0020] The present invention also proposes a base material molding preparation method suitable for corrugated denitration catalysts, comprising the following steps:

[0021] 1) Prepare a molding liquid, which contains 6%-10% of silane, 40%-60% of methanol and 30%-50% of water according to the mass ratio.

[0022] 2) Set the temperature of the drying furnace and forming roller of the forming machine, and load the material when the temperature reaches the set value; the set temperature is: 290-300°C for the first stage of the drying furnace, 280-290°C for the second stage, and 500°C for the upper forming roller , forming the lower roll at 230°C.

[0023] 3) Dip the glass fiber felt in the molding solution first to make the glass fiber felt completely soaked, then dry it in a drying oven and feed it to the forming counter-roller, and heat it at 230°C to form a corrugated shape;

[0024] 4) The corrugated boards are cut into custom-sized lengths by a cutting machine.

[0025] Ac...

Embodiment 1

[0028] In this example, the substrate suitable for corrugated denitration catalysts, according to mass percentage: SiO 2 53%, CaO 30%, Al 2 o 3 15% and MgO 2%.

[0029] This base material molding preparation method suitable for corrugated denitration catalysts includes the following steps:

[0030] 1) Prepare a molding liquid, which contains 6% silane, 60% methanol and 34% water in terms of mass ratio.

[0031] 2) Set the temperature of the drying furnace and forming roller of the forming machine, and load the material when the temperature reaches the set value; the set temperature is: 290-300°C for the first stage of the drying furnace, 280-290°C for the second stage, and 500°C for the upper forming roller , forming the lower roll at 230°C.

[0032] 3) Dip the glass fiber felt in the molding solution first to make the glass fiber felt completely soaked, then dry it in a drying oven and feed it to the forming counter-roller, and heat it at 230°C to form a corrugated shape;...

Embodiment 2

[0035] In this example, the substrate suitable for corrugated denitration catalysts, according to mass percentage: SiO 2 56%, CaO 27%, Al 2 o 3 14% and MgO 3%. This base material molding preparation method suitable for corrugated denitration catalysts includes the following steps:

[0036] 1) Prepare a molding liquid, which contains 10% silane, 40% methanol and 50% water in terms of mass ratio.

[0037] 2) Set the temperature of the drying furnace and forming roller of the forming machine, and load the material when the temperature reaches the set value; the set temperature is: 290-300°C for the first stage of the drying furnace, 280-290°C for the second stage, and 500°C for the upper forming roller , forming the lower roll at 230°C.

[0038] 3) Dip the glass fiber felt in the molding solution first to make the glass fiber felt completely soaked, then dry it in a drying oven and feed it to the forming counter-roller, and heat it at 230°C to form a corrugated shape;

[003...

technical field

[0001] The invention belongs to the technical field of catalysts, and relates to a substrate used in catalysts, in particular to a substrate suitable for corrugated denitration catalysts and a molding preparation method thereof. Background technique

[0002] In the existing technology, there are many technologies for controlling NOx. Selective catalytic reduction technology (SCR) is the most mature, efficient and widely used flue gas denitrification technology at home and abroad. The core of this technology is the catalyst. According to the catalyst structure, SCR catalysts can be divided into honeycomb type, plate type and corrugated type. Compared with the traditional honeycomb or flat denitration catalyst, the corrugated denitration catalyst mainly uses glass fiber felt as the base material, and combines the strengths of the two catalysts in the manufacturing process and structure, such as two shots, anti-wear, anti-poisoning, etc. has great advantages. ...

Examples

preparation example Construction

[0020] The present invention also proposes a base material molding preparation method suitable for corrugated denitration catalysts, comprising the following steps:

[0021] 1) Prepare a molding liquid, which contains 6%-10% of silane, 40%-60% of methanol and 30%-50% of water according to the mass ratio.

[0022] 2) Set the temperature of the drying furnace and forming roller of the forming machine, and load the material when the temperature reaches the set value; the set temperature is: 290-300°C for the first stage of the drying furnace, 280-290°C for the second stage, and 500°C for the upper forming roller , forming the lower roll at 230°C.

[0023] 3) Dip the glass fiber felt in the molding solution first to make the glass fiber felt completely soaked, then dry it in a drying oven and feed it to the forming counter-roller, and heat it at 230°C to form a corrugated shape;

[0024] 4) The corrugated boards are cut into custom-sized lengths by a cutting machine.

[0025] Ac...

Embodiment 1

[0028] In this example, the substrate suitable for corrugated denitration catalysts, according to mass percentage: SiO 2 53%, CaO 30%, Al 2 o 3 15% and MgO 2%.

[0029] This base material molding preparation method suitable for corrugated denitration catalysts includes the following steps:

[0030] 1) Prepare a molding liquid, which contains 6% silane, 60% methanol and 34% water in terms of mass ratio.

[0031] 2) Set the temperature of the drying furnace and forming roller of the forming machine, and load the material when the temperature reaches the set value; the set temperature is: 290-300°C for the first stage of the drying furnace, 280-290°C for the second stage, and 500°C for the upper forming roller , forming the lower roll at 230°C.

[0032] 3) Dip the glass fiber felt in the molding solution first to make the glass fiber felt completely soaked, then dry it in a drying oven and feed it to the forming counter-roller, and heat it at 230°C to form a corrugated shape;...

Embodiment 2

[0035] In this example, the substrate suitable for corrugated denitration catalysts, according to mass percentage: SiO 2 56%, CaO 27%, Al 2 o 3 14% and MgO 3%. This base material molding preparation method suitable for corrugated denitration catalysts includes the following steps:

[0036] 1) Prepare a molding liquid, which contains 10% silane, 40% methanol and 50% water in terms of mass ratio.

[0037] 2) Set the temperature of the drying furnace and forming roller of the forming machine, and load the material when the temperature reaches the set value; the set temperature is: 290-300°C for the first stage of the drying furnace, 280-290°C for the second stage, and 500°C for the upper forming roller , forming the lower roll at 230°C.

[0038] 3) Dip the glass fiber felt in the molding solution first to make the glass fiber felt completely soaked, then dry it in a drying oven and feed it to the forming counter-roller, and heat it at 230°C to form a corrugated shape;

[003...