The Semi-continuous pyrolysis equipment is an upgraded version of batch pyrolysis plant. There are many aspects of comparison between semi-continuous pyrolysis plant and batch pyrolysis plant.
| Type | Semi-continuous Pyrolysis Plant | Batch pyrolysis plant |
| Operation Mode | The semi-continuous pyrolysis plant has a flexible operation mode. The continuous and semi-continuous production modes can be switched according to actual needs. When the material supply is unstable or the demand changes, it can be adjusted to the semi-continuous mode. When the material is sufficient and the production demand is large, the continuous mode can be used. | The batch pyrolysis plant is operated in batches with obvious periodic pauses. After completing the feeding, pyrolysis, slag removal and other processes, the next batch of operations can be carried out. Batch waste tire pyrolysis plant usually puts the whole tire into the furnace. After a batch of tires pyrolysis is completed, it needs to be cooled down and slag removed before the next batch of feeding. |
| Production Efficiency | Semi-continuous pyrolysis plant can continuously feed and discharge slag to a certain extent. It reduces the frequent start-up and stop of the plant and the waiting time, and the production efficiency is relatively high. Taking the semi-continuous sludge pyrolysis plant as an example, it uses a hydraulic feeder to realize automatic feeding, and the daily processing capacity of a single device can reach up to 20 tons. | Batch pyrolysis plant requires a certain amount of time for each feeding and slag discharge. And the plant cannot perform other operations during the pyrolysis process, and the production efficiency is relatively low. The daily processing capacity of a batch sludge pyrolysis plant is 1-15 tons/day. |
| Energy Consumption | Semi-continuous pyrolysis plant can make better use of heat during continuous operation. It has a high energy utilization rate and is relatively energy-saving. | Batch pyrolysis plant needs to be reheated and cooled every time it is started and stopped, and the plant consumes a lot of energy. |
| Final Product Quality | The residence time of materials in semi-continuous pyrolysis plant is relatively stable and continuous. The pyrolysis reaction is more uniform and the product quality is relatively stable. | During the pyrolysis process of batch pyrolysis plant, the materials may be repeatedly heated and cracked, resulting in inconsistent cracking time, affecting the product quality. |
| Equipment Investment | Semi-continuous pyrolysis plant usually has a complex structure and a high degree of automation. Therefore, the plant investment cost is relatively high. However, due to the high production efficiency, the unit processing cost may decrease with the increase in output. | Batch pyrolysis plant has a relatively simple structure, mature technology, and relatively low plant investment cost. It is suitable for some small enterprises or projects with low processing volume requirements. However, considering the long-term operating cost and processing efficiency, its comprehensive cost may not be advantageous. |
| Environmental Performance | Semi-continuous pyrolysis plant adopts a closed feeding and slag discharge design, which can effectively reduce dust leakage and dust emission. Since the continuous pyrolysis process is relatively stable, the pollutants generated are easier to control and treat. It has good environmental performance. | Batch pyrolysis plant is usually open during the feeding and slag discharge process. Dust and odor are easily generated during the feeding and slag discharge process, which has a certain impact on the environment. However, some new batch pyrolysis plant is also constantly improving, adding environmental protection facilities to reduce pollutant emissions. |
