Pyrolysis gasification combustion system and process for high-viscosity organic waste

Abstract

The invention discloses a pyrolysis gasification combustion system and process for high-viscosity organic waste. The system comprises: a mixing tank, which is internally provided with a heating device; a pyrolysis reactor, which is equipped with a spray head at an inlet, wherein the spray head is connected to the mixing tank through a pipeline, the pyrolysis reactor is of a cylindrical structure,a heating structure is arranged on the cylindrical wall, and a carrier gas inlet is formed in the spray head and used for being connected to a carrier gas source; a gasification reactor, which has aninlet communicated with the outlet of the pyrolysis reactor, is provided with an outlet at the top, and is provided with a bed material layer and a gasifying agent inlet at the bottom; and an ash combustion chamber, the inlet of which is communicated with an outlet of the gasification reactor. Pyrolysis, gasification and combustion of high-viscosity organic waste are operated step by step, the high-viscosity organic waste can be prevented from being heated to sharply expand and bond, deposition of large-particle-size particles at the bottom of a fluidized bed is avoided, rising of the system operation pressure is effectively controlled, safe and stable operation of the system is guaranteed, and then clean and environment-friendly disposal of high-viscosity organic waste generated in the traditional Chinese medicine production process is achieved.

Description

Technical field [0001] The invention belongs to the technical field of clean energy treatment of organic waste, and specifically relates to a pyrolysis gasification combustion system and process for highly viscous organic waste. Background technique [0002] Disclosure of the background information is only intended to increase the understanding of the overall background of the present invention, and is not necessarily regarded as an acknowledgement or in any form suggesting that the information constitutes the prior art known to those of ordinary skill in the art. [0003] In the production of traditional Chinese medicine, many Chinese medicinal materials need to be cooked and the active ingredients are extracted from the slurry through water extraction and alcohol precipitation or alcohol extraction and water precipitation processes, which will produce a large amount of wet-based solid Chinese medicine residue and semi-fluid sedimentation residue; there are also some Chinese herbal...

AI Technical Summary

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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