CN-121972494-A - Closed multiphase thermochemical recycling reconstruction platform and processing method thereof

Abstract

A closed multiphase thermochemical recycling reconstruction platform and a treatment method thereof relate to the field of solid waste recycling treatment. The solid waste receiving and treating unit pre-treats the solid waste and conveys the solid waste in a closed mode, the closed controlled thermochemical reaction unit applies preset temperature, pressure and atmosphere conditions to the pre-treated solid waste in a closed space, a multiphase medium is introduced to enable the pre-treated solid waste to undergo thermochemical reconstruction, physical property differences among different components are amplified to obtain a recycling product, the multiphase product flow separating unit performs one or more post-treatments on the recycling product to obtain at least two product flows with different phases or different components, and one or more of temperature, pressure, atmosphere composition, flow and separating end indexes in the reaction and separation process are collected by the monitoring and cooperative control unit, so that the closed controlled thermochemical reaction unit and the multiphase product flow separating unit are regulated and controlled in a linkage mode, and the efficient, stable and recycling recovery of various solid wastes is realized.

Inventors

• WANG FENG

Assignees

• 北京绿安创华环保科技有限公司

Dates

Publication Date

20260505

Application Date

20260211

Claims (11)

1. 1. The airtight multiphase thermochemical recycling reconstruction platform is characterized by comprising a solid waste receiving and processing unit, a solid waste processing unit and a control unit, wherein the solid waste receiving and processing unit is used for carrying out one or more of crushing, screening, humidifying and mixing on the solid waste and realizing airtight conveying; The closed controlled thermochemical reaction unit is used for applying set temperature, pressure and atmosphere conditions to the pretreated solid waste in a closed reaction space, introducing a multiphase medium, enabling the pretreated solid waste to undergo one or more thermochemical reconstruction processes of decomposition, desorption, migration enrichment, mineralization stabilization, reduction/oxidation or phase change separation, amplifying physical property differences among different components and obtaining a recycling product; A multiphase product stream separation unit in communication with the closed controlled thermochemical reaction unit, performing one or more combinations of depressurization, cooling, condensation, and gas-liquid separation, solid-liquid separation, liquid-phase separation, or adsorption purification on the recycled product to obtain at least two product streams of different phases or different components; And the monitoring and cooperative control unit is used for collecting one or more of temperature, pressure, atmosphere composition, flow and separation end indexes in the reaction and separation process, and carrying out linkage regulation, switching or optimization on the operation parameters and/or the treatment paths of the closed controlled thermochemical reaction unit and the multiphase product flow separation unit according to the separation end indexes.
2. 2. A closed multi-phase thermochemical recycling reconstruction platform according to claim 1, wherein the solid waste is one or more mixtures of solid waste or semi-solid waste, including, but not limited to, one or more of organic-containing solid waste, salt-containing solid waste, halogen-containing solid waste, heavy metal-containing solid waste, oil-containing solid waste, sulfur-containing solid waste, slag, smelting slag, fly ash, battery-related solid waste, and electronic waste treatment residue.
3. 3. The closed multiphase thermochemical recycling reconstruction platform according to claim 1 wherein the closed controlled thermochemical reaction unit comprises at least one or more closed reaction vessels, further comprising one or more of a heating and temperature control module, a pressure and atmosphere control module, a media supply module, and a material movement module.
4. 4. A closed multiphase thermochemical recycling reconstruction platform according to claim 3 wherein the material movement module is one or more of stirring, tumbling, rotating, vibrating or cyclic driving.
5. 5. A closed multi-phase thermochemical recycling reconstruction platform according to claim 1, wherein the reaction pressure of the closed controlled thermochemical reaction unit is one or more of sub-atmospheric, equal to atmospheric, super-atmospheric and is switched between different operating phases.
6. 6. The closed multiphase thermochemical recycling reconstruction platform according to claim 1, wherein the closed controlled thermochemical reaction unit performs sectional heating or sectional temperature reduction and/or sectional temperature reduction, and selects, switches or adjusts the types and/or proportions of multiphase media according to the separation end index.
7. 7. The closed multiphase thermochemical recycling reconstruction platform according to claim 1 wherein the multiphase medium comprises one or more of a gas phase medium, a liquid phase medium and a solid phase medium, the gas phase medium being one or more of an inert gas, a reducing gas, a micro-oxygen gas or steam, the liquid phase medium being one or more of water, an acid-base salt solution, a surfactant solution, an organic solvent, the solid phase medium being one or more of an adsorbent, a mineralizer, a catalyst or a reactant.
8. 8. A closed multi-phase thermochemical recycling reconstruction platform according to claim 1, wherein the multi-phase product stream separation unit comprises at least two stages of different types of separation step combinations, arranged in sequence or in parallel.
9. 9. The closed multiphase thermochemical recycling reconstruction platform according to claim 8 wherein the combination and/or sequence of separation steps is selected, switched or optimized by the monitoring and co-control unit according to solid waste type, reaction process parameters and/or separation end index.
10. 10. The closed multiphase thermochemical recycling reconstruction platform according to claim 1 wherein the monitoring and co-control unit is provided with preset parameter intervals and performs alarm and linkage regulation when the temperature, pressure, atmosphere composition or separation end index exceeds the parameter intervals, the linkage regulation comprising at least one or more of regulation of heating power, pressure control, medium supply, material movement intensity and/or separation step combination.
11. 11. A method for processing airtight multi-phase thermochemical recycling, which is suitable for an airtight multi-phase thermochemical recycling platform according to any one of claims 1 to 10, and is characterized by comprising the steps of performing one or more of crushing, screening, humidifying and mixing on solid waste and realizing airtight conveying; Applying set temperature, pressure and atmosphere conditions to the pretreated solid waste in a closed reaction space, introducing a multiphase medium to enable the pretreated solid waste to undergo one or more thermochemical reconstruction processes of decomposition, desorption, migration enrichment, mineralization stabilization, reduction/oxidation or phase change separation, amplifying physical property differences among different components and obtaining a recycling product; performing one or more of depressurization, cooling, condensation, gas-liquid separation, solid-liquid separation, liquid-phase separation or adsorption purification on the recycled product to obtain at least two product streams of different phases or different components; and collecting one or more of temperature, pressure, atmosphere composition, flow and separation end indexes in the reaction and separation processes, and carrying out linkage regulation, switching or optimization on the operation parameters and/or treatment paths of the closed controlled thermochemical reaction unit and the multiphase product stream separation unit according to the separation end indexes.

Description

Closed multiphase thermochemical recycling reconstruction platform and processing method thereof Technical Field The invention relates to the technical field of solid waste recycling, in particular to a closed multiphase thermochemical recycling reconstruction platform and a treatment method thereof. Background With the rapid development of petroleum refining, chemical industry, coal chemical industry, ferrous metallurgy, fine chemical industry and town solid waste treatment industry, a large amount of solid waste such as oily sludge, oil sand, chemical sludge, waste plastics, waste tire rubber, deactivated catalyst, red mud mixed slag and the like is produced. The solid waste contains oil phase, organic polymer or rubber component in a certain proportion, is tightly combined with inorganic component, filler, fiber and the like to form a high-viscosity, high-water-content and multiphase composite structure, has limited conventional physical separation and normal-pressure solvent extraction efficiency, is difficult to realize effective desorption and separation under mild conditions, has high energy consumption and high cost when incinerated or directly disposed, can possibly bring secondary pollution of dioxin, acid gas, heavy metal and the like, has large composition difference of solid waste from different sources, and is often developed into independent processes according to waste types in the prior art, and a reusable general platform method is lacked. In the prior art, for single-class solid wastes such as oil-containing sludge, waste plastics, waste tires and the like, processes such as normal pressure/pressurized solvent extraction, high-temperature pyrolysis, wet stirring and cleaning, high-temperature incineration and the like are available. However, the method has the problems that various solid wastes are usually treated by completely different treatment processes and equipment, a general platform is difficult to form, the equipment universality is poor, the direct thermal cracking or incineration needs higher temperature, the reaction is not easy to control, the energy consumption and the safety pressure are high, the partial processes are only focused on reduction or innocuity, systematic recovery of oil phases, polymers, metals or inorganic substrates is lacking, the process regulation and control lack response design, and the process is rarely started from the response difference of materials in different temperature and pressure and solvent environments. Accordingly, the problems of the prior art are to be further improved and developed. Disclosure of Invention The invention aims to solve the problems in the prior art, and the invention aims to provide a closed multiphase thermochemical recycling reconstruction platform and a treatment method thereof, which realize the universalization treatment of solid or semisolid wastes with different sources and different compositions and realize the unification of reduction, stabilization and high value. In order to solve the technical problems, the technical scheme provides a closed multiphase thermochemical recycling reconstruction platform, which comprises a solid waste receiving and processing unit, a solid waste processing unit and a control unit, wherein the solid waste receiving and processing unit is used for carrying out one or more of crushing, screening, humidifying and mixing pretreatment and realizing closed conveying; The closed controlled thermochemical reaction unit is used for applying set temperature, pressure and atmosphere conditions to the pretreated solid waste in a closed reaction space, introducing a multiphase medium, enabling the pretreated solid waste to undergo one or more thermochemical reconstruction processes of decomposition, desorption, migration enrichment, mineralization stabilization, reduction/oxidation or phase change separation, amplifying physical property differences among different components and obtaining a recycling product; A multiphase product stream separation unit in communication with the closed controlled thermochemical reaction unit, performing one or more combinations of depressurization, cooling, condensation, and gas-liquid separation, solid-liquid separation, liquid-phase separation, or adsorption purification on the recycled product to obtain at least two product streams of different phases or different components; And the monitoring and cooperative control unit is used for collecting one or more of temperature, pressure, atmosphere composition, flow and separation end indexes in the reaction and separation process, and carrying out linkage regulation, switching or optimization on the operation parameters and/or the treatment paths of the closed controlled thermochemical reaction unit and the multiphase product flow separation unit according to the separation end indexes. Preferably, the solid waste is one or more mixtures of solid waste or semi-solid waste, including but not limited to one or mo