|
| MOQ: | 1 set |
| Price: | Negotiable |
| Standard Packaging: | conventional |
| Delivery Period: | Customized |
| Payment Method: | L/C |
| Supply Capacity: | Negotiable |
99% Removal Rate VOCs Treatment PSA separation for Environmental emissions
99% Removal Rate PSA VOCs Treatment
Description:
The adsorption and removal technology is adopted with low investments and operation costs, and the removal efficiency of exhaust can up to 99% with no secondary pollution, which complies with the national environmental policy and the international EHS requirements.
VOCs processing has several characteristics: 1) VOCs components are complex, from tens to hundreds, and it is difficult to accurately determine the components; 2) The volume of VOCs is large, generally in the range of 10W ~ 100W, and the gas pressure is very low, which is usually extracted by the induced draft fan, and the pressure is more in the range of 0.1kpa ~ 5kpa. 3) VOCs do not have the economic value of recycling, only through the treatment has reached the requirements of environmental protection emissions, and the treatment process will consume water and electricity, resulting in a larger treatment cost. To sum up, it is difficult to deal with VOCs
Take the tail gas from the fermentation broth of thioerythromycin as an example:
Figure 1:Relative adsorption capacity of VOCs at different temperatures
From the analysis of the relative adsorption capacity of the adsorbent to the exhaust gas of the component at different temperatures in Figure 1, it can be seen that with the increase of adsorption temperature, the adsorption capacity decreases gradually. When the temperature is below 40 ℃ and lower than the boiling point of each component, the adsorbent has a larger adsorption capacity. According to the adsorption theory analysis, the adsorption state of the adsorbate on the adsorbent is similar to that of liquid membrane, and has a larger adsorption capacity; When the temperature gradually increases to 40 ℃ and below 90 ℃, the relative adsorption decreases to about 70% of the original saturated adsorption; When the temperature is higher than 90 ℃, the relative adsorption decreases obviously, and the temperature is higher than the boiling point temperature of each component, the molecular energy of the adsorbate increases, and the adsorption capacity of the adsorbent decreases; When the temperature rises to 220 ℃, the adsorbent is basically in the adsorption state of adsorption, and the adsorption capacity is less than 5%.
In conclusion, the adsorption and regeneration of adsorbent can be realized effectively by changing the temperature when the component gas is treated. Theoretically, the lower the temperature is, the larger the adsorption capacity is, the better the adsorption effect is; On the contrary, the higher the temperature, the smaller the adsorption capacity, the better the regeneration effect, the better the theoretical selection of adsorption temperature less than 40 ℃, regeneration temperature more than 220 degrees. However, due to the temperature of the tail gas of the pharmaceutical plant is about 140 ℃, besides the adsorbate, a large amount of water vapor will be brought in, the energy consumption of frequent temperature rise is too high, the cycle process is long, and it has no good economic benefits in the industrial production. From the analysis of adsorption diagram, after the temperature is more than 90 ℃, the adsorption capacity decreases obviously, and the adsorption efficiency of adsorbent decreases significantly. After the temperature is greater than 180 ℃, the adsorption capacity continues to decrease, but the continuous rise of temperature has little contribution to the regeneration of adsorbent. Therefore, in this example, the optimal adsorption temperature is 90 ℃ and desorption temperature is 180 ℃.
Technical indexes:
Purity: Environmental emission standards
Capacity:1000~100000Nm3/h
Yield: No recovery
Reference
|
|
| MOQ: | 1 set |
| Price: | Negotiable |
| Standard Packaging: | conventional |
| Delivery Period: | Customized |
| Payment Method: | L/C |
| Supply Capacity: | Negotiable |
99% Removal Rate VOCs Treatment PSA separation for Environmental emissions
99% Removal Rate PSA VOCs Treatment
Description:
The adsorption and removal technology is adopted with low investments and operation costs, and the removal efficiency of exhaust can up to 99% with no secondary pollution, which complies with the national environmental policy and the international EHS requirements.
VOCs processing has several characteristics: 1) VOCs components are complex, from tens to hundreds, and it is difficult to accurately determine the components; 2) The volume of VOCs is large, generally in the range of 10W ~ 100W, and the gas pressure is very low, which is usually extracted by the induced draft fan, and the pressure is more in the range of 0.1kpa ~ 5kpa. 3) VOCs do not have the economic value of recycling, only through the treatment has reached the requirements of environmental protection emissions, and the treatment process will consume water and electricity, resulting in a larger treatment cost. To sum up, it is difficult to deal with VOCs
Take the tail gas from the fermentation broth of thioerythromycin as an example:
Figure 1:Relative adsorption capacity of VOCs at different temperatures
From the analysis of the relative adsorption capacity of the adsorbent to the exhaust gas of the component at different temperatures in Figure 1, it can be seen that with the increase of adsorption temperature, the adsorption capacity decreases gradually. When the temperature is below 40 ℃ and lower than the boiling point of each component, the adsorbent has a larger adsorption capacity. According to the adsorption theory analysis, the adsorption state of the adsorbate on the adsorbent is similar to that of liquid membrane, and has a larger adsorption capacity; When the temperature gradually increases to 40 ℃ and below 90 ℃, the relative adsorption decreases to about 70% of the original saturated adsorption; When the temperature is higher than 90 ℃, the relative adsorption decreases obviously, and the temperature is higher than the boiling point temperature of each component, the molecular energy of the adsorbate increases, and the adsorption capacity of the adsorbent decreases; When the temperature rises to 220 ℃, the adsorbent is basically in the adsorption state of adsorption, and the adsorption capacity is less than 5%.
In conclusion, the adsorption and regeneration of adsorbent can be realized effectively by changing the temperature when the component gas is treated. Theoretically, the lower the temperature is, the larger the adsorption capacity is, the better the adsorption effect is; On the contrary, the higher the temperature, the smaller the adsorption capacity, the better the regeneration effect, the better the theoretical selection of adsorption temperature less than 40 ℃, regeneration temperature more than 220 degrees. However, due to the temperature of the tail gas of the pharmaceutical plant is about 140 ℃, besides the adsorbate, a large amount of water vapor will be brought in, the energy consumption of frequent temperature rise is too high, the cycle process is long, and it has no good economic benefits in the industrial production. From the analysis of adsorption diagram, after the temperature is more than 90 ℃, the adsorption capacity decreases obviously, and the adsorption efficiency of adsorbent decreases significantly. After the temperature is greater than 180 ℃, the adsorption capacity continues to decrease, but the continuous rise of temperature has little contribution to the regeneration of adsorbent. Therefore, in this example, the optimal adsorption temperature is 90 ℃ and desorption temperature is 180 ℃.
Technical indexes:
Purity: Environmental emission standards
Capacity:1000~100000Nm3/h
Yield: No recovery
Reference
