A pyrolysis gasification combustion system and process for highly viscous organic waste

Abstract

The invention discloses a high-viscosity organic waste pyrolysis gasification combustion system and process, comprising: a mixing tank, in which a heating device is arranged; It is connected by a pipeline; it is a cylindrical structure, and the wall of the cylinder is provided with a heating structure. The top is provided with an outlet, and the bottom is provided with a bed material layer and a gasification agent inlet; an ash combustion chamber, the inlet of which communicates with the outlet of the gasification reactor. Through the step-by-step operation of pyrolysis, gasification and combustion of highly viscous organic waste, it can prevent its rapid expansion and cohesion when heated, avoid the deposition of large-size particles at the bottom of the fluidized bed, and effectively control the operation of the system The increase in pressure ensures the safe and stable operation of the system, and then realizes the clean and environmentally friendly disposal of highly viscous organic waste generated in the production process of traditional Chinese medicine.

Description

technical field [0001] The invention belongs to the technical field of clean energy treatment of organic waste, and in particular relates to a pyrolysis gasification combustion system and process of highly viscous organic waste. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] In the production of traditional Chinese medicine, many Chinese medicinal materials need to be boiled and the active ingredients are extracted from the slurry by water extraction and alcohol precipitation or alcohol extraction and water precipitation process, which will produce a large amount of waste such as solid Chinese medicine residue and semi-fluid precipitation residue on a wet basis; there are...

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Problems solved by technology

[0005] However, the inventors found that when wastes such as sedimentation slag are sprayed into the circulating fluidized bed for co-processing with solid wastes such as traditional Chinese medicine residue, the operating pressure above the air chamber at the bottom of the circulating fluidized bed tends to rise rapidly

In addition, waste such as sedimentation slag contains ethanol and other volatile components. When heated, the surface of the sedimentation slag particles rapidly expands to form a film, and the surface moisture, ethanol and other components are quickly precipitated. The residual sugar and other macromolecules are not easy to decompose quickly and have higher viscosity. The components of the new particles form a new particle matrix, some particles continue to pyrolyze, and the particle size gradually becomes smaller and is carried out with the air flow, and some particles collide and bond under the action of the fluidizing wind to form particles with larger particle sizes, and then The gradual deposition above the air chamber at the bottom of the fluidized bed causes the operating pressure of the system to rise, affecting the safe and stable operation of the system

Therefore, although wastes such as sediment slag and retort liquid have low ash content and high calorific value, it is still difficult to achieve low-cost and effective disposal of direct combustion or co-combustion

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