Full-amount efficient treatment process for fruit and vegetable garbage

Abstract

The invention belongs to the technical field of garbage treatment, and particularly relates to a full-amount efficient treatment process for fruit and vegetable garbage. The treatment process comprises a full-amount pulping system, an acidification desanding system, a curing desanding system, a heat exchange system, an industrial coalification reaction system, a filter pressing system, a waste heat utilization system, a wet fermentation system, a biogas residue storage system, a coal cinder cake crushing system and a granulation drying system, so that all the fruit and vegetable garbage is changed into fuel particles, biogas and sand residues. The fruit and vegetable garbage treatment problem can be solved, and the problem of high equipment energy consumption in the resource utilization process of the fruit and vegetable garbage is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of garbage disposal, and in particular relates to a full-volume and efficient treatment process for fruit and vegetable garbage. Background Art

[0002] With the improvement of domestic living standards and the continuous optimization and adjustment of industrial structure, the treatment process of fruit and vegetable waste usually requires pretreatment before landfill, composting, incineration or anaerobic fermentation. After the country implemented the garbage classification policy, fruit and vegetable waste in many cities has been separated from domestic waste for treatment. The content of biomass such as fruits and vegetables in the fruit and vegetable waste in these cities has increased from about 70% to more than 97%. The common fruit and vegetable waste treatment processes on the market almost all require a large number of equipment to be put into pretreatment processes such as screening, crushing, water selection, air selection or dehydration to avoid impurities from reducing the efficiency of subsequent treatment processes, especially anaerobic fermentation; at the same time, most of the processes related to the resource utilization of fruit and vegetable waste remain in the simple fermentation biogas production or fertilizer production process stage. Due to the characteristics of fruit and vegetable waste itself, the process cycle of this type is relatively long. The drying and granulation related processes have not been complementary to other processes, resulting in a widespread situation of huge energy consumption, insufficient revenue, and low calorific value of products with no market, that is, a lack of efficient and sustainable resource treatment processes. Summary of the invention

[0003] The purpose of the present invention is to expand the fruit and vegetable waste treatment process and provide a full-scale and efficient fruit and vegetable waste treatment process, which can achieve efficient decomposition of fruit and vegetable waste into sand slag, biogas, and fuel particles, reduce the problem of high energy consumption of equipment in the process of resource utilization of fruit and vegetable waste, and thus solve the problem of efficient and sustainable recycling of fruit and vegetable waste treatment.

[0004] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0005] A full-scale and efficient treatment process for fruit and vegetable waste, characterized in that: the treatment process includes a full-scale pulping system, an acidification and sand removal system, a maturation and sand removal system, a heat exchange system, an industrial coalification reaction system, a filter press system, a waste heat utilization system, a wet fermentation system, a biogas residue storage system, a coal slag cake crushing system, and a granulation and drying system, wherein:

[0006] The full-volume pulping system is used to make the fruit and vegetable waste fed into it into a pulpy fluid material, and the discharge port is connected to the acidification and sand removal system in the form of a conveying pipeline.

[0007] The acidification and sand removal system is used to add acidification bacteria for stirring and monitoring indicators. A sand removal spiral and a discharge port are provided at the bottom. The discharge port is connected to the maturation and sand removal system in the form of a conveying pipeline.

[0008] The slaking and desanding system is used for adding reagents for stirring and monitoring indicators. A desanding spiral and a discharge port are provided at the bottom. The discharge port is connected to the industrial coalification reaction system in the form of a conveying pipeline.

[0009] The industrial coalification reaction system is used to make the slurry undergo coalification reaction in a high temperature and high pressure environment to decompose into char and sewage. A high temperature and high pressure resistant sand removal spiral and a discharge port are arranged at the bottom, and the discharge port is connected to the filter press system in the form of a conveying pipeline.

[0010] The filter press system is used for solid-liquid separation, the liquid discharge port is connected to the wet fermentation system, and the solid discharge port is connected to the granulation and drying system.

[0011] The wet fermentation system is used to condition and ferment the incoming materials until biogas and biogas residue are produced, and the biogas residue outlet is connected to the biogas residue storage system in the form of a conveying pipeline.

[0012] The biogas residue storage system is used for adding reagents for stratification and monitoring indicators. A sand removal spiral and a discharge port are provided at the bottom, and the discharge port is connected to the filter press system in the form of a conveying pipeline.

[0013] The granulation and drying system is used to dry, mix and granulate the incoming materials into fuel particles.

[0014] The heat exchange system is used to exchange the heat energy of the outer wall of the discharge pipe of the industrial coalification reaction system to the outer wall of the feed pipe of the industrial coalification reaction system.

[0015] The waste heat utilization system is used to distribute the waste heat energy of the industrial coalification reaction system and the heat exchange system to the wet fermentation system and the granulation and drying system as needed to improve the biogas production efficiency or drying efficiency of the wet fermentation system.

[0016] According to this preferred embodiment, the full-scale pulping system is an integrated machine that combines the three pre-treatment capabilities of crushing, rolling and grinding. It is fully closed and has only one feeding port and one discharging port, so that fruit and vegetable garbage and the impurities and debris contained in the garbage can all be made into pulpy fluid materials.

[0017] According to this preferred embodiment, the industrial coalification reaction system and the drying and granulation system share a heating system, and the heating system is an electromagnetic heating system, which can measure and control the temperature of the two systems simultaneously or separately.

[0018] According to this preferred embodiment, the drying and granulation system is of drum type, an electromagnetic coil is wound around the outside of the drum, the electromagnetic coil heats the drum wall and transfers heat to the material; the waste heat utilization system is provided with a coil and an internal circulation fan, and the internal circulation fan is placed at one end of the drum to blow air into the drum.

[0019] The advantages of the present invention are:

[0020] 1. There is no need to configure a variety of pre-treatment equipment or processes such as screening, crushing, water selection, air selection or dehydration, and all the fruit and vegetable waste can be pulped at the same time.

[0021] 2. The waste heat utilization system plays a role of centralized measurement and control in the process of coordinating with the three processes of industrial coalification, wet fermentation, and drying and granulation, and realizes the mutually beneficial exchange of waste energy among the three subsystems.

[0022] 3. The discharge pipe wall and the feed pipe wall of the industrial coalification reaction system exchange heat without intermediate medium, and the energy recovery rate is high.

[0023] 4. The equipment has good integrity and airtightness, sand and slag do not need manual cleaning, the slurry is pumped through pipelines throughout the process, the project has a high degree of automation, and compared with manual sorting, aerobic composting, black soldier fly and other processes, it occupies a small area. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the full-scale and efficient treatment process of the fruit and vegetable waste involved. DETAILED DESCRIPTION

[0025] Referring to the attached drawings, a full-scale efficient treatment process for fruit and vegetable waste includes a full-scale pulping system, an acidification and sand removal system, a maturation and sand removal system, a heat exchange system, an industrial coalification reaction system, a filter press system, a waste heat utilization system, a wet fermentation system, a biogas residue storage system, a coal slag cake crushing system, and a granulation and drying system, wherein:

[0026] The full-volume pulping system is used to make the fruit and vegetable waste fed into it into a pulpy fluid material, and the discharge port is connected to the acidification and sand removal system in the form of a conveying pipeline.

[0027] The acidification and sand removal system is used to add acidification bacteria for stirring and monitoring indicators. A sand removal spiral and a discharge port are provided at the bottom. The discharge port is connected to the maturation and sand removal system in the form of a conveying pipeline.

[0028] The slaking and desanding system is used for adding reagents for stirring and monitoring indicators. A desanding spiral and a discharge port are provided at the bottom. The discharge port is connected to the industrial coalification reaction system in the form of a conveying pipeline.

[0029] The industrial coalification reaction system is used to make the slurry undergo coalification reaction in a high temperature and high pressure environment to decompose into char and sewage. A high temperature and high pressure resistant sand removal spiral and a discharge port are arranged at the bottom, and the discharge port is connected to the filter press system in the form of a conveying pipeline.

[0030] The filter press system is used for solid-liquid separation, the liquid discharge port is connected to the wet fermentation system, and the solid discharge port is connected to the granulation and drying system.

[0031] The wet fermentation system is used to condition and ferment the incoming materials until biogas and biogas residue are produced, and the biogas residue outlet is connected to the biogas residue storage system in the form of a conveying pipeline.

[0032] The biogas residue storage system is used for adding reagents for stratification and monitoring indicators. A sand removal spiral and a discharge port are provided at the bottom, and the discharge port is connected to the filter press system in the form of a conveying pipeline.

[0033] The granulation and drying system is used to dry, mix and granulate the incoming materials into fuel particles.

[0034] The heat exchange system is used to exchange the heat energy of the outer wall of the discharge pipe of the industrial coalification reaction system to the outer wall of the feed pipe of the industrial coalification reaction system.

[0035] The waste heat utilization system is used to distribute the waste heat energy of the industrial coalification reaction system and the heat exchange system to the wet fermentation system and the granulation and drying system as needed to improve the biogas production efficiency or drying efficiency of the wet fermentation system.

[0036] Furthermore, the full-scale pulping system is an integrated machine that integrates three pre-treatment capabilities of crushing, rolling and grinding. It is fully closed and has only one feeding port and one discharging port, so that fruit and vegetable waste and impurities contained in the waste can all be made into pulpy fluid materials.

[0037] Furthermore, the industrial coalification reaction system and the drying and granulation system share a heating system, and the heating system is an electromagnetic heating system, which can measure and control the temperature of the two simultaneously or separately.

[0038] Furthermore, the drying and granulation system is of drum type, an electromagnetic coil is wound around the outside of the drum, the electromagnetic coil heats the drum wall and transfers heat to the material; the waste heat utilization system is provided with a coil and an internal circulation fan, the internal circulation fan is placed at one end of the drum to blow air into the drum.

[0039] Compared with the prior art, the present invention has the following advantages: there is no need to configure a variety of pretreatment equipment or processes such as screening, crushing, water selection, air selection or dehydration, and all the fruit and vegetable waste can be pulped at the same time; the waste heat utilization system plays a centralized measurement and control role in the process of coordinating with the three processes of industrial coalification, wet fermentation, and drying and granulation, and realizes the mutually beneficial exchange of waste energy of the three subsystems; the discharge pipe wall and the feed pipe wall of the industrial coalification reaction system exchange heat without an intermediate medium, and the energy recovery rate is high; the equipment has good integrity and airtightness, sand and slag do not need to be manually cleaned, the slurry is pumped through pipelines throughout the process, the project has a high degree of automation, and compared with manual sorting, aerobic composting, black soldier fly and other processes, it occupies a small area.

[0040] In addition, the products obtained by the high-efficiency full-scale treatment process of fruit and vegetable waste, namely biogas and fuel particles, can also enter subsequent energy conversion links such as biogas power generation and thermal power generation, be converted into electrical energy, and be fed back to the industrial coalification reaction system, wet fermentation system, drying and granulation system and other subsystems of this treatment process in the form of clean energy, or enter other upstream and downstream industries that require electricity, and have a wide range of subsequent resource utilization paths.

[0041] The specific embodiments of the present invention are described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. Therefore, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.

Claims

1. A high-efficiency process for treating all amounts of fruit and vegetable waste, characterized in that: The treatment process includes a full-scale pulping system, an acidification and sand removal system, a maturation and sand removal system, a heat exchange system, an industrial coalification reaction system, a filter press system, a waste heat utilization system, a wet fermentation system, a biogas residue storage system, a coal slag cake crushing system, and a granulation and drying system, wherein: The full-scale pulping system is used to make the fruit and vegetable waste fed into the system into a pulp-like fluid material, and the discharge port is connected to the acidification and sand removal system in the form of a conveying pipeline. The acidification and desanding system is used to add acidification bacteria for stirring and monitoring indicators. A desanding spiral and a discharge port are provided at the bottom. The discharge port is connected to the maturation and desanding system in the form of a conveying pipeline. The slaking and desanding system is used to add reagents for stirring and monitoring indicators. A deslagging spiral and a discharge port are provided at the bottom. The discharge port is connected to the industrial coalification reaction system in the form of a conveying pipeline. The industrial coalification reaction system is used to make the slurry undergo coalification reaction in a high temperature and high pressure environment to decompose into char and sewage. A high temperature and high pressure resistant sand removal spiral and a discharge port are provided at the bottom, and the discharge port is connected to the filter press system in the form of a conveying pipeline; The filter press system is used for solid-liquid separation, the liquid discharge port is connected to the wet fermentation system, and the solid discharge port is connected to the granulation and drying system; The wet fermentation system is used to condition and ferment the incoming materials until biogas and biogas residue are produced, and the biogas residue outlet is connected to the biogas residue storage system in the form of a conveying pipeline; The biogas residue storage system is used to add reagents for stratification and monitor indicators. A sand removal spiral and a discharge port are provided at the bottom. The discharge port is connected to the filter press system in the form of a conveying pipeline. The granulation and drying system is used to dry, mix and granulate the incoming materials into fuel particles; The heat exchange system is used to exchange the heat energy of the outer wall of the discharge pipe of the industrial coalification reaction system to the outer wall of the feed pipe of the industrial coalification reaction system; The waste heat utilization system is used to distribute the waste heat energy of the industrial coalification reaction system and the heat exchange system to the wet fermentation system and the granulation and drying system as needed to improve the biogas production efficiency or drying efficiency of the wet fermentation system.

2. A high-efficiency treatment process for all fruit and vegetable waste according to claim 1, characterized in that: The full-scale pulping system is an integrated machine that integrates three pre-treatment capabilities: crushing, rolling and grinding. It is fully closed and has only one feeding port and one discharging port, so that fruit and vegetable garbage and impurities contained in the garbage can all be made into pulpy fluid materials.

3. The high-efficiency treatment process for all fruit and vegetable waste according to claim 1, characterized in that: The industrial coalification reaction system and the drying and granulation system share a heating system, and the heating system is of electromagnetic heating type, which can measure and control the temperature of the two simultaneously or separately.

4. The high-efficiency full-volume fruit and vegetable waste treatment process according to claim 1, characterized in that: The drying and granulating system is of drum type, with an electromagnetic coil wound around the outside of the drum, which heats the drum wall and transfers heat to the material; the waste heat utilization system is provided with a coil and an internal circulation fan, and the internal circulation fan is placed at one end of the drum to blow air into the drum.

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