Distributed coupling treatment system for organic solid waste

Abstract

The utility model relates to the technical field of chemical engineering, and particularly provides an organic solid waste distributed coupling treatment system. The system comprises pyrolysis equipment, a first cavity, biomass heating equipment, a second cavity and a heat exchanger, wherein the first cavity exchanges heat with the pyrolysis equipment, the second cavity exchanges heat with the biomass heating equipment, and the heat exchanger is communicated with the first cavity and the second cavity and outputs heat in the first cavity and the second cavity to heat energy utilization equipment through heat exchange. The system is green, environment-friendly, efficient, energy-saving and stable, and can realize sustainable development.

Description

Technical Field

[0001] This application relates to the field of chemical technology, specifically providing a distributed coupled treatment system for organic solid waste. Background Technology

[0002] Organic solid waste refers to various organic wastes generated during production and daily life, including agricultural waste, forestry waste, livestock and poultry manure, the organic components of municipal solid waste, and industrial organic waste. If not properly treated, these wastes can become a burden on the environment; however, they are also valuable renewable resources that can be transformed into energy or other useful products through various technological means.

[0003] Currently, the use of organic solid waste for heating mainly includes the following methods: organic solid waste combined heat and power (CHP), biomass briquette fuel boiler heating, biogas heating, organic solid waste gasification heating, and organic solid waste stove heating. The development of these technologies helps reduce dependence on fossil fuels, reduce greenhouse gas emissions, and promote the resource utilization of waste. However, with increasing practical needs and industrial upgrading, waste heating technologies still need further improvement to enhance energy efficiency and reduce pollutant emissions. Simultaneously, the stability of the systems also needs further enhancement.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this application is to provide a distributed coupled treatment system for organic solid waste, which provides a green, environmentally friendly, energy-efficient, stable and sustainable organic solid waste heating system.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] A distributed coupled treatment system for organic solid waste, the system comprising: under the control of an intelligent control system:

[0008] A distributed coupled treatment system for organic solid waste, the system comprising:

[0009] A pyrolysis apparatus, comprising a reactor and pipelines connecting the reactor to the pyrolysis products;

[0010] A first cavity is provided, and a portion of the pyrolysis product pipeline is disposed within the first cavity to allow the substances in the pyrolysis product pipeline to exchange heat with the air within the first cavity.

[0011] A biomass heating device, comprising a burner and a flue gas duct connected to the burner;

[0012] The second cavity is provided in which a part of the flue gas duct is disposed, so that the flue gas in the flue gas duct can exchange heat with the air in the second cavity;

[0013] The air duct outlet of the first cavity and the air duct outlet of the second cavity are connected to the first inlet and the second inlet of a valve. The outlet of the valve is connected to the hot air path of a heat exchanger and back to the air duct inlet of the first cavity and the air duct inlet of the second cavity to form a loop. The valve is used to switch the connection between the first cavity or the second cavity and the hot air path of the heat exchanger.

[0014] The heat exchanger includes a hot air path and a medium path. After the medium in the medium path exchanges heat with the hot air path, the medium is output to a heat energy utilization device that uses the corresponding medium.

[0015] Furthermore, the coupling processing system also includes:

[0016] Energy storage heating equipment, which includes a water tank in which water is heated by a solar heat pipe or a ground source heat pump system;

[0017] The third cavity, at least a portion of the water tank is disposed within the third cavity, so that the water in the water tank can exchange heat with the air within the third cavity;

[0018] The air outlet of the third cavity is connected to the third inlet of the valve, and the outlet of the valve is connected to the hot air path of the heat exchanger and then back to the air inlet of the third cavity to form a loop; the valve is used to switch the connection between the first cavity, the second cavity, or the third cavity and the hot air path of the heat exchanger.

[0019] Furthermore, the heat exchanger includes a first heat exchanger, a second heat exchanger, and a third heat exchanger;

[0020] The valves include a first four-way valve, a second four-way valve, and a third four-way valve;

[0021] The air duct outlets of the first cavity, the second cavity, and the third cavity are all connected to the three inlet ports of the first four-way valve, the second four-way valve, and the third four-way valve;

[0022] The three outlet ports of the first four-way valve, the second four-way valve, and the third four-way valve are respectively connected to the first heat exchanger, the second heat exchanger, and the third heat exchanger;

[0023] The medium passage of the first heat exchanger is filled with heat transfer oil; the medium passage of the second heat exchanger is filled with steam; and the medium passage of the third heat exchanger is filled with hot water.

[0024] Furthermore, the water tank of the energy storage heating equipment also includes an electric heating device for heating using off-peak electricity.

[0025] Furthermore, the hot air loop connecting the first heat exchanger, the second heat exchanger, and the third heat exchanger is provided with a fan that drives the hot air to circulate in the loop.

[0026] Furthermore, the second and third heat exchangers are also connected to a water softening system.

[0027] Furthermore, the biomass heating equipment also includes pipelines and nozzles for transmitting biomass diesel fuel to the burner, and a conveying device for transmitting waste-derived fuel or solid recycled fuel to the burner.

[0028] Furthermore, the thermal energy utilization equipment includes at least one of the following: waste biomass wet hydrolysis equipment, waste oil pretreatment equipment, commercial heating equipment, or residential heating equipment.

[0029] Furthermore, a fuel supply device is provided upstream of the pyrolysis equipment, which includes a preheating device for preheating organic solid waste.

[0030] Furthermore, the coupling processing system also includes mobile heating vehicles.

[0031] Compared with the prior art, the technical effects of this application are as follows:

[0032] Green and Environmentally Friendly: This treatment system is an environmentally friendly energy conversion method. It primarily involves pyrolyzing organic solid waste at low temperatures to convert it into energy products such as combustible gases, bio-oil, and biochar. This process not only effectively reduces the amount of organic solid waste but also avoids its environmental pollution. No harmful gases or pollutants are generated during the treatment of organic solid waste. Instead, it transforms these wastes into clean energy, playing a positive role in environmental protection. Furthermore, it reduces carbon dioxide emissions, contributing to mitigating global warming.

[0033] High efficiency and energy saving: This processing system enables multi-stage energy utilization during energy conversion, improving energy efficiency. For example, in the low-temperature pyrolysis process, combustible gases, bio-oil, and biochar can be widely used in power generation, heating, and industrial production, thus achieving efficient energy conversion and utilization. It can also be linked with other energy systems to further improve energy efficiency. For instance, it can complement renewable energy sources such as solar energy and geothermal energy, achieving diversified energy utilization, thereby reducing energy consumption and improving energy efficiency.

[0034] Sustainable Development: This treatment system primarily relies on the conversion of organic solid waste, which is generated in vast quantities through human production and daily life. Through a distributed coupled treatment system for organic solid waste, we can convert this waste into energy, achieving resource reuse and providing crucial support for sustainable development. Simultaneously, this system can also promote the healthy development of agriculture, forestry, and other industries. By treating agricultural and forestry waste, we can reduce their environmental impact, improve agricultural and forestry productivity, and thus drive the sustainable development of these industries.

[0035] Economic benefits: First, this process can effectively treat organic solid waste, reducing its treatment costs. Second, by converting organic solid waste into energy, it can reduce energy consumption and lower energy costs. Furthermore, the distributed coupled treatment system for organic solid waste can create jobs and promote economic development.

[0036] In summary, distributed coupled treatment systems for organic solid waste possess numerous advantages, including being environmentally friendly, highly efficient and energy-saving, promoting sustainable development, and offering economic benefits. In future energy conversion processes, these systems will play an increasingly important role, serving as a crucial pathway to green, efficient, and sustainable development. Attached Figure Description

[0037] The various technical features of this application and their relationships will be further explained below with reference to the accompanying drawings. The drawings are exemplary; some technical features are not shown to scale, and some drawings may omit technical features commonly used in the art to which this application pertains that are not essential for understanding and implementing this application, or additionally show technical features that are not essential for understanding and implementing this application. In other words, the combination of various technical features shown in the drawings is not intended to limit this application. Furthermore, throughout this application, the same reference numerals refer to the same things. Specific descriptions of the drawings are as follows:

[0038] Figure 1 This is a schematic diagram of the distributed coupled treatment system for organic solid waste of this application;

[0039] Figure 2 This is a schematic diagram of the coupled heat recovery structure in the distributed coupled treatment system for organic solid waste of this application. Detailed Implementation

[0040] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions described in this application will be further described in detail below with reference to specific embodiments.

[0041] like Figure 1The distributed coupled treatment system for organic solid waste provided in this application converts organic solid waste from different sources (such as garden waste 4, bulky waste 5, other waste 6, etc.) into energy in the form of combustible gas, liquid fuel, and solid residue through low-temperature pyrolysis reactions, and then uses this energy for heating purposes. When the heat from organic solid waste is insufficient, biomass heating equipment (such as biodiesel, waste-derived fuel (RDF), solid recycled fuel (SRF)) and energy storage heating equipment (such as off-peak electricity, solar energy, and ground source heat pumps) are used to circulate and heat the waste (up to about 800°C). Mobile heating vehicles are used to provide heat to equipment in need (at about 200°C), such as waste oil pretreatment equipment (requiring heat of about 70-90°C), waste biomass wet hydrolysis equipment (requiring heat of 150°C-180°C), and other equipment that requires heat (such as commercial or residential heating equipment) through heat transfer. This treatment system achieves efficient pyrolysis and thermal energy conversion of organic matter under low-temperature conditions. It fully utilizes the technology aimed at reducing waste resources and treating them harmlessly, realizing the recycling of energy. It can effectively reduce the pollution of organic solid waste to the environment, mitigate the negative impact of landfill and incineration, and at the same time realize energy recovery and resource reuse, thereby improving resource utilization efficiency.

[0042] Refuse-derived fuel (RDF) is a type of solid fuel made from combustible solid waste separated from municipal solid waste through processes such as drying, crushing, sorting, and molding.

[0043] Solid recycled fuel (SRF) is a type of fuel produced from non-household waste (primarily commercial, industrial, and agricultural waste) through a series of processing steps.

[0044] When there is sufficient heat in the organic solid waste, the organic solid waste is pyrolyzed in the pyrolysis equipment, and the resulting products are used for heating.

[0045] The pyrolysis equipment 11 includes a reactor, typically a sealable container, used to heat and decompose organic solid waste into combustible gas, liquid fuel (bio-oil), and solid residue (biochar) in an oxygen-deficient environment. The pyrolysis process also generates its own heat, which can be used for thermal decomposition. Excess heat from the pyrolysis process can also be recovered and supplied externally. The feed inlet of the pyrolysis reactor is connected to a feeding device, such as a screw conveyor or vibrating feeder, to transport components 4, 5, and 6 into the reactor. The discharge outlet is connected to pyrolysis product pipelines, which include gas pipelines, liquid pipelines, and solid residue transfer pipelines to respectively transport the combustible gas, bio-oil, and solid residue (mainly biochar) generated during the pyrolysis process.

[0046] A portion of the pyrolysis product pipeline is located within the first cavity. The heat of the substance in the pyrolysis product pipeline can be exchanged with the air in the first cavity. The first cavity is connected to the hot air path of the heat exchanger through a duct and forms a circulation. A fan is installed in the duct to drive the air circulation between the first cavity and the hot air path of the heat exchanger.

[0047] In one embodiment, the temperature conditions of the pyrolysis reactor are 200–800°C. The core of this technology lies in the pyrolysis reaction, which has advantages such as fast processing speed, good volume reduction effect, and resource recovery.

[0048] In one embodiment, a fuel supply device is installed upstream of the pyrolysis equipment, which includes a preheating unit for preheating organic solid waste. The fuel supply device handles fuel storage, transportation, and preheating. The fuel is generally organic solid waste, such as garden waste, bulky waste, and other waste. To improve fuel transportation efficiency and reduce energy loss, stainless steel pipes with good thermal conductivity are selected for the fuel supply device, and the exterior is packaged with high-temperature resistant, flame-retardant, and other heat-insulating materials. Furthermore, fuel preheating ensures the smooth progress of the pyrolysis reaction.

[0049] When the heat from organic solid waste is insufficient, at least one of the following can be used for supplementary heating: biomass heating equipment, energy storage heating equipment, and mobile heating vehicles.

[0050] The biomass heating equipment 10 includes a burner for burning biomass fuel. Solid fuels 2 and 3 can be conveyed via a screw conveyor or vibrating feeder, while liquid fuel 1 is injected into the combustion chamber via a pump and pipeline (with nozzles at the end). The burner is connected to a flue gas passage to discharge the flue gas generated during combustion.

[0051] A portion of the flue gas passage duct is located in the second cavity, where the heat of the flue gas in the flue gas passage can be exchanged with the air in the second cavity. The second cavity is connected to the hot air path of the heat exchanger through a duct and forms a circulation. A fan is installed in the duct to drive the air circulation between the second cavity and the hot air path of the heat exchanger.

[0052] The energy storage heating device 12 includes a water tank, in which water is heated by a solar heat pipe circulation system and by a ground source heat pump system. The water tank also contains an electric heating device that can utilize off-peak electricity (such as nighttime electricity) for heating. The lower section of the water tank is insulated, while the middle and upper sections of the water tank have no insulation layer and fins on their outer surface. The middle and upper sections are located within a third cavity, where heat from the water tank can exchange with the air inside the third cavity. This third cavity is connected to the hot air path of the heat exchanger via a duct to form a circulation. A fan is installed in the duct to drive the air circulation between the third cavity and the hot air path of the heat exchanger.

[0053] A mobile heating vehicle is a mobile heating device that integrates core components such as a heat source, heat exchanger, and circulating pump into a mobile vehicle body to achieve rapid heat transfer and distribution.

[0054] In one implementation, such as Figure 2 The heat exchanger may include three heat exchangers 13, 14, and 16. Each heat exchanger has two paths: one for hot air and the other for the output medium (such as heat transfer oil, steam, or water). The inlet and outlet of the hot air paths of the three heat exchangers can each be equipped with a four-way valve (three inlets and one outlet) to connect with the hot air circulation pipelines of 10, 11, and 12. Switching between the four-way valves allows connection to the hot air of one of 10, 11, or 12, thus recovering the corresponding heat.

[0055] Each heat exchanger has an inlet and an outlet for its output medium, and is equipped with corresponding valves to supply heat to downstream equipment through the corresponding medium (e.g., 20, 21, 22, 23, 24).

[0056] In one embodiment, the heat recovery of 10, 11, and 12 in this application adopts an air path method, thereby achieving consistency of the interface (air path interface) during heat recovery. This facilitates simultaneous adaptation to 13, 14, and 16, enabling controllable and flexible connection between 13, 14, and 16 and 10, 11, and 12 to recover heat, thus realizing distributed coupled heat recovery.

[0057] In one embodiment, the medium passage of the first heat exchanger is filled with heat transfer oil; the medium passage of the second heat exchanger is filled with steam; and the medium passage of the third heat exchanger is filled with hot water. The second and third heat exchangers are also connected to a water softener to remove calcium and magnesium ions from the water, thereby "softening" the water and enabling the conversion between the steam from the second heat exchanger and the hot water from the third heat exchanger.

[0058] To reduce the impact of high temperature on the fan, in the coupled processing system, the fan is set at the loop outlet end of 13, 14, and 16 and then reconnected to 10, 11, and 12 (where heat exchange is completed).

[0059] In coupled heat exchange systems, heat transfer primarily occurs through equipment walls and pipes. To improve thermal efficiency, high-strength, high-temperature-resistant, and thermally conductive materials, such as high-temperature alloys and stainless steel, are selected. The exterior is encased in high-temperature-resistant and flame-retardant insulation materials to minimize heat loss.

[0060] In one implementation, the coupled treatment system can be controlled by an intelligent control system, which provides strong support for the stable operation and efficient management of the distributed coupled treatment system for organic solid waste. The system integrates advanced functions such as remote monitoring, automatic adjustment, and fault diagnosis, enabling it to monitor the system's operating status in real time, automatically adjust operating parameters to cope with changes in the external environment, and quickly locate problems when faults occur, reducing downtime.

[0061] Example

[0062] Figure 1 This is a schematic diagram of the distributed coupled treatment system for organic solid waste in this application. Figure 1 As shown, organic solid waste (e.g., 4-garden waste, 5-bulky waste, 6-other waste) is pyrolyzed in the 11-pyrolysis equipment; 1-biomass diesel, 2-waste-derived fuel (RDF), and 3-solid recycled fuel (SRF) are burned in the 10-biomass heating equipment; 7-off-peak electricity, 8-solar energy, and 9-ground source heat pumps generate heat by heating water in the 12-energy storage heating equipment. The heat generated by 10, 11, and 12 is supplied externally through heat exchangers (13-thermal oil heat exchange system, 14-steam heat exchange system, 16-water storage heat exchange system) in the form of 17-thermal oil heating, 18-steam heating, and 19-hot water heating. Additionally, 25-mobile heating vehicles can also be used for supplementary heating. The entire distributed coupled treatment system for organic solid waste can be used for 20-wet hydrolysis equipment for waste biomass, 21-pre-treatment equipment for waste oil, 22-other heat-using equipment, 23-commercial heating systems, and 24-residential heating systems. By rationally arranging the pipeline route and reducing pipeline length, heat loss during temperature transfer can be minimized. Simultaneously, the exterior is encased in high-temperature resistant and flame-retardant insulation materials to further reduce heat dissipation.

[0063] Specifically, if Figure 2Downstream of 10 and 11, a first chamber and a second chamber are respectively provided: 11 - The outlet of the pyrolysis equipment is connected to the pyrolysis product pipeline. A portion of the pyrolysis product pipeline is located in the first chamber. The heat of the substance in the pyrolysis product pipeline can exchange heat with the air in the first chamber. The first chamber is connected to the hot air path of heat exchangers 13, 14, and 16 through a duct to form a circulation. A fan is installed in the duct to drive the air circulation in the first chamber and the hot air path of the heat exchangers. 10 - The outlet of the biomass heating equipment is connected to a flue gas pipeline. A portion of the flue gas pipeline is located in the second chamber. The heat of the flue gas in the flue gas pipeline can exchange heat with the air in the second chamber. The second chamber is connected to the hot air path of heat exchangers 13, 14, and 16 through a duct to form a circulation. A fan is installed in the duct to drive the air circulation in the second chamber and the hot air path of the heat exchangers. 12-The energy storage heating device is equipped with a third chamber, in which the heat inside the device can exchange heat with the air inside the third chamber. The third chamber is connected to the hot air path of heat exchangers 13, 14, and 16 through a duct and forms a circulation. A fan is installed in the duct to drive the air circulation between the third chamber and the hot air path of the heat exchangers.

[0064] Unless otherwise defined, all technical and scientific terms used throughout this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. In case of any inconsistency, the meaning as stated in this application or derived from the content described herein shall prevail. Furthermore, the terminology used in this description is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0065] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the technical concept of this application, all of which fall within the scope of protection of this application.

Claims

1. A distributed coupled treatment system for organic solid waste, characterized in that, The system includes: A pyrolysis apparatus, comprising a reactor and pipelines connecting the reactor to the pyrolysis products; A first cavity, wherein a portion of the pyrolysis product pipeline is disposed within the first cavity, so that the substances within the pyrolysis product pipeline exchange heat with the air within the first cavity; A biomass heating device, comprising a burner and a flue gas duct connected to the burner; The second cavity is provided in which a part of the flue gas duct is disposed, so that the flue gas in the flue gas duct can exchange heat with the air in the second cavity; The air duct outlet of the first cavity and the air duct outlet of the second cavity are connected to the first inlet and the second inlet of a valve. The outlet of the valve is connected to the hot air path of a heat exchanger and back to the air duct inlet of the first cavity and the air duct inlet of the second cavity to form a loop. The valve is used to switch the connection between the first cavity or the second cavity and the hot air path of the heat exchanger. The heat exchanger includes a hot air path and a medium path. After the medium in the medium path exchanges heat with the hot air path, the medium is output to a heat energy utilization device that uses the corresponding medium.

2. The coupling processing system according to claim 1, characterized in that, Also includes: Energy storage heating equipment, which includes a water tank in which water is heated by a solar heat pipe or a ground source heat pump system; The third cavity, at least a portion of the water tank is disposed within the third cavity, so that the water in the water tank can exchange heat with the air within the third cavity; The air outlet of the third cavity is connected to the third inlet of the valve, and the outlet of the valve is connected to the hot air path of the heat exchanger and then back to the air inlet of the third cavity to form a loop; the valve is used to switch the connection between the first cavity, the second cavity, or the third cavity and the hot air path of the heat exchanger.

3. The coupling processing system according to claim 2, characterized in that, The heat exchanger includes a first heat exchanger, a second heat exchanger, and a third heat exchanger; The valves include a first four-way valve, a second four-way valve, and a third four-way valve; The air duct outlets of the first cavity, the second cavity, and the third cavity are all connected to the three inlet ports of the first four-way valve, the second four-way valve, and the third four-way valve; The three outlet ports of the first four-way valve, the second four-way valve, and the third four-way valve are respectively connected to the first heat exchanger, the second heat exchanger, and the third heat exchanger; The medium passage of the first heat exchanger is filled with heat transfer oil; the medium passage of the second heat exchanger is filled with steam; and the medium passage of the third heat exchanger is filled with hot water.

4. The coupling processing system according to claim 2, characterized in that, The water tank of the energy storage heating equipment also includes an electric heating device for heating using off-peak electricity.

5. The coupling processing system according to claim 3, characterized in that, The hot air loops connecting the first, second, and third heat exchangers are connected by a fan that drives the hot air to circulate in the loop.

6. The coupling processing system according to claim 3, characterized in that, The second and third heat exchangers are also connected to a water softening system.

7. The coupling processing system according to claim 1, characterized in that, The biomass heating equipment also includes pipelines and nozzles for transmitting biomass diesel fuel to the burner, and a conveying device for transmitting waste-derived fuel or solid recycled fuel to the burner.

8. The coupling processing system according to claim 1, characterized in that, The thermal energy utilization equipment includes at least one of the following: waste biomass wet hydrolysis equipment, waste oil pretreatment equipment, commercial heating equipment, or residential heating equipment.

9. The coupling processing system according to claim 1, characterized in that, The upstream of the pyrolysis equipment is a fuel supply device, which includes a preheating device for preheating organic solid waste.

10. The coupling processing system according to any one of claims 1 to 9, characterized in that, It also includes mobile heating vehicles.

Images