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A system and method for controlling continuous pyrolysis of biomass
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A control method and biomass technology, applied in the general control system, control/regulation system, program control, etc., can solve the problems of hidden safety hazards and product quality differences, and achieve the goals of ensuring safety, continuous feeding and carbon discharge Effect
Active Publication Date: 2017-12-26
SOUTH CHINA AGRI UNIV
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[0009] Although there have been a lot of research reports and solutions on the methods and devices of continuous pyrolysis of biomass, the solutions in the prior art have not yet achieved precise automatic control, and there are still differences in product quality caused by improper human operation. problems, and even cause safety hazards in the production process
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Embodiment 1
[0075] A biomass continuous pyrolysis control system and method of the present invention, through real-time monitoring of the amount of biomass raw material in the first-level hopper, the amount of biomass raw material in the second-level hopper, the amount of carbon in the first-level carbon box, the amount of carbon in the second-level carbon box, and wood vinegar Liquid level, tar level, water temperature of water cooling circulation outlet, air temperature of air cooling outlet, combustion furnace temperature, oxygen content of back-burning gas pipeline and other working parameters, and automatically control the feeding system, feeding system, condensation and so on according to the corresponding control strategy system, charcoal output system, tar and wood vinegar collection system, heating system, oxygen removal system, to ensure that the working parameters of the pyrolysis system are maintained within the normal working range. The control system and method can realize the...
Embodiment 2
[0095] The present invention also provides a method for controlling continuous pyrolysis of biomass, which is realized by using the system described in Example 1.
[0096] The method in this specific embodiment specifically includes a feed control step, a feed control step, a discharge control step, a condensation control step, a liquid discharge control step, an oxygen removal control step, and a pyrolysis control step.
[0097] like figure 2 As shown, the feed control steps are specifically:
[0098] S1. During the initial feeding, open the first valve and the second valve, feed materials to the primary hopper and the secondary hopper, and execute steps S2 and S3 at the same time;
[0099] S2. The controller detects whether the raw material in the secondary hopper reaches the set upper threshold through the distance sensor in the secondary hopper, and if so, controls the second valve to close, and executes step S4;
[0100] S3. The controller detects whether the raw mater...
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Abstract
The present invention relates to a biomass continuous pyrolysis control system and a biomass continuous pyrolysis control method. The system comprises hoppers, a continuous pyrolysis reactor and charcoal boxes which are connected orderly, a first-grade condenser communicated with the continuous pyrolysis reactor and the charcoal box simultaneously, a second-grade condenser communicated with the first-grade condenser, and an air storage tank connected with the second-grade condenser and communicated with the continuous pyrolysis reactor. The hoppers comprise a first-grade hopper and a second-grade hopper in which the distance sensors are arranged respectively, a feeding port of the first-grade hopper is equipped with a first valve, and a second valve is arranged at the communication position of the second-grade hopper and the first-grade hopper. The charcoal boxes comprise a first-grade charcoal box and a second-grade charcoal box in which the distance sensors are arranged respectively, the first-grade condenser is communicated with the first-grade charcoal box, and a third valve is arranged at the communication position of the first-grade charcoal box and the second-grade charcoal box. A fourth valve is arranged at a discharging port of the second-grade charcoal box, the distance sensors are all connected with a controller, and the first to fourth valves are all connected with the controller. According to the present invention, the accurate control of feeding and discharging is realized.
Description
technical field [0001] The invention relates to the field of biomass energy utilization, and more specifically, to a biomass continuous pyrolysis control system and method. Background technique [0002] With the rapid growth of the world's population and the development of economy and technology, people's demand for energy has increased sharply, and the extensive use of fossil fuels has caused serious pollution to the environment. The problem of energy shortage and environmental deterioration has become a hot topic in the society. Biomass energy is the fourth largest energy source after fossil energy such as coal, oil, and natural gas. It is currently the main supplementary fossil fuel resource in the world. It has the advantages of stable source, huge output, renewable, storable, and carbon cycle. And biomass is the only renewable energy that can be converted into gas, liquid, and solid energy forms, so it has received extensive attention from all over the world. [0003]...
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