Method for treating inner surface of light hydrocarbon aromatization reactor
An aromatization reactor and inner surface technology, applied in the direction of solid-state diffusion coating, coating, metal material coating technology, etc., can solve the problems of insufficient service life, coating peeling, etc., to reduce the amount of coke and reduce the cost cheap effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0047] 304 stainless steel hanging piece, the outer wall is polished with sandpaper to remove scale, and the method of the present invention is used to process, the steps are as follows:
[0048] (1) In pure H 2 Under normal pressure conditions, the aromatization reactor was heated to 950°C at a heating rate of 600°C / h, and then the reactor was cooled to 800°C at a cooling rate of 80°C / h;
[0049] (2) When containing H 2 and CH 4 In the presence of the first mixed gas, at a pressure of 0.3MPa and a temperature of 800°C for 20h, where CH 4 Volume percentage content is 1.5%;
[0050] (3) After the constant temperature is completed, the temperature is lowered to 600°C at a rate of 50°C / h. During the cooling process, the gas pressure, composition, CH 4 The volume percentage remains unchanged;
[0051] (4) When containing H 2 and CH 4 In the presence of the second mixed gas, at a pressure of 0.5MPa and a temperature of 600°C for 10h, wherein CH 4 Volume percentage content i...
Embodiment 2
[0055] 310 stainless steel hanging piece, the outer wall is polished with sandpaper to remove scale, and the method of the present invention is used to process, the steps are as follows:
[0056] (1) In pure H 2 Under normal pressure conditions, the aromatization reactor is heated to 1000°C at a heating rate of 400°C / h, and then the reactor is cooled to 900°C at a cooling rate of 50°C / h;
[0057] (2) When containing H 2 and CH 4 In the presence of the first mixed gas, the pressure is 0.4MPa, the temperature is 900°C for 10h, wherein CH 4 Volume percentage content is 2.0%;
[0058] (3) After the constant temperature is completed, the temperature is lowered to 700°C at a rate of 80°C / h. During the cooling process, the gas pressure, composition, CH 4 The volume percentage remains unchanged;
[0059] (4) When containing H 2 and CH 4 In the presence of the second mixed gas, at a pressure of 0.8MPa and a temperature of 700°C for 20h, where CH 4 Volume percentage content is 4...
Embodiment 3
[0063] 316 stainless steel hanging piece, the outer wall is polished with sandpaper to remove scale, and the method of the present invention is used to process, the steps are as follows:
[0064] (1) In pure H 2 Under normal pressure conditions, the aromatization reactor was heated to 960°C at a heating rate of 500°C / h, and then the reactor was cooled to 880°C at a cooling rate of 20°C / h;
[0065] (2) When containing H 2 and CH 4 In the presence of the first mixed gas, at a pressure of 0.5MPa and a temperature of 880°C for 25h, where CH 4 Volume percentage content is 0.8%;
[0066] (3) After the constant temperature is over, cool down to 500°C at a rate of 80°C / h. During the cooling process, the gas pressure, composition, CH 4 The volume percentage remains unchanged;
[0067] (4) When containing H 2 and CH 4 In the presence of the second mixed gas, the pressure is 0.3MPa, the temperature is kept at 500°C for 15h, wherein CH 4 Volume percentage content is 5%;
[0068] ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More