What is the Differences Batch Type Semi continuous and Continuous
Comparison between batch(intermittent) and "continuous" rotary pyrolysis system
Pyrolysis Rui
Pyrolysis Rui
Director Sale
Ann
E: sales2@pyrolysisoil.net
Shangqiu Ruixin General Equipment Manufacture Co.,Ltd
Both intermittent rotary and continuous rotary pyrolysis system are the same pyrolysis process which under a closed oxygen-free environment to make thermal phase separation and condensation recovery of organic solid wastes.
The continuous type is a semi-continuous pyrolysis system developed on the basis of batch system, which realizes the combination of feeding, discharging slag and pyroysis rotary vessel together, it can feed material at high temperature and discharge slag sealing well, the integrity of the system is better than the intermittent one. However, the pyrolysis process is still divided into three stages: feeding - pyrolysis -discahring slag – re-feeding - pyrolysis – discharging slag ... ... cycle like this, it is not the true continuous while feeding materials, at the same time discharging slag all the time, and the safety is more difficult to control compared with the intermittent pyrolsyis system, increasing the risk. Continuous pyryoysis system requires extremely rigorous on raw materials, waste tires must be cut and shredded, and the particle size requirements are more stringent. The investment in early stage of tire treatment is large.
The continuous pyrolysis system pyrolysis process is the same as the batch process: the pyrolysis process is completed at a certain time and temperature, the so-called continuous process only achieves the integration of feeding and discharging slag with the pyrolysis rotary vessel, it does not achieve true continuous processing. Second, this method requires higher pretreatment of materials, especially tire processing is required de-beading steel, cutting and crushing into small pellets. Otherwise, during the pyrolysis process, the steel wire will form a steel wire group with the rotation of the pyrolysis rotary body, resulting in slag clogging and no slagging. Third, continuous system increase investment because of pretreatment processing of materials, area, It will extend the processing process, need more control and management points and increase operating costs. Fourth, the investment of pyrolysis system equipment is extremely high. Fifth, except feeding and slag is integration, no other configuration than batch-type pyrolysis systems, including materials and processes has been seen from now on. Sixth, the area of the semi-continuous pyrolysis system is more than twice than the batch pyrolysis system. Seventh, in the actual operation, the so-called continuous pyrolysis system often been heard a serious leakage and clogging of the feedind and slagging system. Therefore, this semi-continuous system can be called a gimmick. The technology is still immature, and it still needs long-term operation to sum up experiences and improvements.
Two batch rotary system combined the batch type rotary kiln can also realize continuous, that is, one set operating pyrolysis, another set operating discharging and feeding, alternating with each other to achieve continuous, this continuous way to maximize the recovery of resources ( gas can be shared) to reduce thermal energy costs. Second, the batch reactor can be flexibly selected feeding method according to the different materials: belt conveyor feeding, screw feeding and hydraulic feeding, etc. Third, the slag removal method adopts the slag at the center of the reactor door. The slag remover removes the dry-base carbon black into the trench-closed carbon black water-cooled conveyor. The carbon black conveyor passes through the slag outlets of the pyrolysis systems, the carbon black is discharged into the conveyor line under the ground in sealed condition, there is no fly ash dust pollution. Carbon black is transported to the carbon black collection bin buffer via the conveyor line. The collection bin is equipped with an automatic metering and packaging system. No fly ash is generated during the entire slag removal process. Fourth, the tire will have wall sticking phenomenon during the pyrolysis process. Steel wire will act as brushing function during the pyrolysis process to solve the problems of waste rubber and plastic sticking and slag clogging, killing two birds with one stone. Fifth, the condensing recovery process of the intermittent pyrolysis system is obviously better than the semi-continuous process. The closed cooling tower is equipped with our company's patented open spray condensing system to solve the problem that the tube cooler needs regular cleaning, it increase the recovery effect more than 1.5 times. Sixth, the floor space of the intermittent system layout is obviously smaller than the semi-continuous layout. The layout of the feeding method and the slag discharge line are more flexible and convenient. Seventh, the pretreatment of materials for batch pyrolysis systems is not obvious and the requirements are not high that can short the entire process flow and reduce investment and operating costs. Eighth, the investment cost and operating cost of the intermittent pyrolysis system are obviously better than the semi-continuous pyrolysis system.
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