High-value and adjustable-target-product comprehensive utilization method and system for organic waste

Abstract

The invention discloses a comprehensive utilization method and system for high-value organic wastes and adjustable target products, and belongs to the technical field of resource utilization of organic wastes. The system comprises gasification and carbonization equipment, an afterburning type waste heat boiler, a gas generator set, steam explosion equipment, activated carbon preparation equipment, anaerobic fermentation equipment, a methanol preparation system, flue gas waste heat recycling equipment, an ammonia gas preparation system, biomass charcoal pure oxygen combustion equipment, a green hydrogen preparation system and a biodiesel preparation system. The three technologies of gasification carbonization, steam explosion and anaerobic fermentation are coupled, the treatment efficiency is greatly improved, deep resource utilization of organic solid waste and organic wastewater is achieved through the same set of equipment, the equipment investment is reduced, and the occupied area is reduced; biomass green electric power generated by the gas generator set is used for splitting water to produce hydrogen and oxygen; and secondary gradient utilization and material reutilization of the waste heat of the flue gas are realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of resource utilization of organic wastes, and more specifically, relates to a comprehensive utilization method and system of high-value organic wastes with adjustable target products. Background Art

[0002] Organic waste refers to organic waste products generated by humans in production, consumption, life and other activities, including kitchen waste, waste paper, waste plastic, waste fabric, agricultural and forestry solid waste in domestic garbage, and sludge, oil sludge, high-concentration organic wastewater, waste plastic, waste packaging products, waste textiles and leather scraps in industrial solid waste. Since organic solid waste has a high organic matter content and is flammable, it can be recycled as energy. Therefore, it is of great practical significance to reduce, harmlessly treat and recycle organic solid waste.

[0003] At present, the general treatment methods for organic waste are landfill, composting, incineration, and pyrolysis. However, landfill or composting will cause secondary pollution, are not environmentally friendly, have low utilization rates, and require a large amount of land; incineration will produce a large amount of polluting gas, and the materials after incineration cannot be directly used; although pyrolysis technology helps to decompose organic solid waste, it is often not treated thoroughly and has a low resource conversion rate. Therefore, there is an urgent need for an organic waste treatment process and method that is energy-saving, environmentally friendly, fast, efficient, and does not require a large amount of land.

[0004] There are several ways to treat agricultural and forestry solid wastes. First, directly crush them and return them to the fields as fertilizer; second, feed livestock with them after biochemical treatment; third, treat them using physical or physical chemical methods and use them as raw materials for papermaking and pulping; fourth, gasify or carbonize agricultural and forestry wastes in a gasifier or carbonizer to make fuel. However, only using them as fuel after gasification, and discarding the byproducts tar and wood vinegar; or using other fuels as heat sources to carbonize them, only retaining the combustible component - charcoal, and discarding the generated combustible gas, will not only waste valuable resources, but also pollute the environment.

[0005] The inventor has disclosed a method for recycling and treating organic solid waste in the previously disclosed patent CN 113430012 A, which uses organic solid waste blocks such as straw as raw materials and energy, combines a gasification and carbonization combined process, a steam or gas power generation process, a steam explosion process, and a carbon-based organic fertilizer and a wood vinegar foliar fertilizer preparation process to form an organic solid waste recycling and treatment method, and the whole industry chain co-produces gas, steam, electricity, aerobic biochar, anaerobic biochar (drying charcoal), wood vinegar, tar, organic fertilizer, feed, pulp, paper, carbon-based bio-organic fertilizer, wood vinegar fertilizer, wood vinegar foliar fertilizer, etc. However, in the inventor's continuous research, it was found that the byproduct biomass gas generated by gasification and carbonization was not efficiently utilized. If it is only transported to a boiler or a gas generator set to produce electricity and steam, it will waste valuable resources. Summary of the invention

[0006] In view of the above problems existing in the prior art, the technical problem to be solved by the present invention is to provide a high-value comprehensive utilization system of organic waste with adjustable target products, by coupling the three technologies of gasification carbonization, steam explosion and anaerobic fermentation, greatly improving the treatment efficiency and greatly improving the scale benefits. Another technical problem to be solved by the present invention is to provide a high-value comprehensive utilization method of the above organic waste with adjustable target products, so as to realize the deep resource utilization of organic solid waste and organic wastewater, reduce equipment investment and reduce floor space.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0008] A high-value comprehensive utilization system of organic waste with adjustable target products, including gasification and carbonization equipment, supplementary combustion type waste heat boiler, gas generator set, steam explosion equipment, activated carbon production equipment, anaerobic fermentation equipment, methanol production system, flue gas waste heat recycling equipment, ammonia production system, biomass charcoal pure oxygen combustion equipment, green hydrogen production system, and biodiesel production system;

[0009] The organic waste is connected to the gasification and carbonization equipment, the steam explosion equipment and the anaerobic fermentation equipment respectively; the gasification and carbonization equipment is connected to the activated carbon production equipment, the biomass charcoal pure oxygen combustion equipment and the supplementary burning type waste heat boiler respectively; the supplementary burning type waste heat boiler is connected to the gasification and carbonization equipment, the steam explosion equipment and the flue gas waste heat recycling equipment respectively; the flue gas waste heat recycling equipment is connected to the methanol production system, the gas generator set and the green hydrogen production system respectively; the steam explosion equipment is connected to the biodiesel production system and the green hydrogen production system respectively; the green hydrogen production system is connected to the ammonia production system.

[0010] Preferably, the green hydrogen production system comprises an activated carbon purification device, a deionized water purification device and an electrolyzer, and collects the condensed water discharged from the steam explosion device and the condensed water discharged from the flue gas waste heat recycling device. The collected condensed water enters the activated carbon purification device and the deionized water purification device in turn, and then a part of the condensed water enters the electrolyzer, and the condensed water after electrolysis purification produces hydrogen and oxygen, and the other part enters the supplementary combustion type waste heat boiler;

[0011] Among them, the hydrogen produced by electrolysis of water is used to produce methanol, biodiesel and ammonia, and the oxygen produced provides a gasifying agent for the gasification of organic solid waste in the gasification and carbonization equipment.

[0012] Preferably, the ammonia production system includes an air separation unit and an ammonia production device, the air separation unit is used to separate air to obtain high-purity nitrogen, and the ammonia production equipment is used to react the high-purity nitrogen obtained by the air separation unit with hydrogen produced by the green hydrogen production system to synthesize green ammonia.

[0013] Preferably, the gasification and carbonization equipment is used to gasify and carbonize organic solid waste with a high carbon content to obtain wood vinegar, biomass charcoal, wood tar and high-temperature biomass gas; the organic solid waste with a high carbon content includes straw, wood chips and fruit shells.

[0014] The steam explosion equipment is used to steam explode organic solid waste and organic wastewater to generate kitchen waste grease, pulping raw materials, edible mushroom stick raw materials, organic fertilizer raw materials, animal feed raw materials and condensed water;

[0015] The anaerobic fermentation equipment is used to pass organic wastewater, steam-exploded straw, and livestock and poultry manure into the anaerobic fermentation equipment for anaerobic fermentation to produce biogas, biogas liquid and biogas residue; the biogas produced by fermentation is stored in a biogas tank, and the gas in the biogas tank is desulfurized and passed into the methanol production system for reuse.

[0016] The organic wastewater includes landfill leachate, food processing industry wastewater, papermaking industry wastewater, and livestock and poultry wastewater.

[0017] Preferably, the biodiesel production system is used to react wood tar produced by gasification and carbonization equipment, waste cooking oil produced by steam explosion equipment, and hydrogen produced by electrolysis of water to produce green biodiesel.

[0018] Preferably, the supplementary combustion type waste heat boiler is used for heat exchange between high-temperature biomass gas, high-temperature flue gas and water to generate high-temperature water vapor; wherein, the high-temperature biomass gas is discharged from the gasification and carbonization equipment, and the high-temperature flue gas is discharged from the activated carbon production equipment and the biomass charcoal pure oxygen combustion equipment; the high-temperature water vapor generated after heat exchange by the supplementary combustion type waste heat boiler is passed into the gasification and carbonization equipment and the steam explosion equipment as a high-temperature medium for heating, and the discharged sub-high-temperature flue gas is passed into the flue gas waste heat recycling equipment for flue gas recycling.

[0019] Preferably, the methanol production system includes a gas mixing tank, purification equipment, a methane reforming device, a CO-CO2 separation device, and a methanol synthesis reactor, which are used to synthesize green methanol through purification, reforming, and separation reaction of a portion of the biomass gas discharged from the flue gas waste heat recycling equipment.

[0020] Preferably, the flue gas waste heat recycling equipment is used to reuse the sub-high temperature flue gas discharged from the supplementary combustion type waste heat boiler to obtain condensed water and biomass gas, and the obtained biomass gas is respectively introduced into the gas mixing tank and the gas generator set.

[0021] Preferably, the activated carbon making device is used to make activated carbon from the biomass carbon produced by carbonization in the gasification and carbonization device, and the generated activated carbon is transported to the activated carbon purification device;

[0022] The biomass char pure oxygen combustion equipment is used to perform pure oxygen combustion on the biomass char produced by gasification in the gasification and carbonization equipment to provide high-temperature flue gas;

[0023] The gas generator set is used to generate energy from another part of the biomass gas discharged by the flue gas waste heat recycling equipment, and the generated green electricity can be used for electrolyzing water in an electrolyzer to produce hydrogen and oxygen.

[0024] A method for comprehensive utilization of organic waste with high value and adjustable target products, comprising the following steps:

[0025] 1) Organic solid waste with high carbon content enters the gasification and carbonization equipment for gasification and carbonization to obtain wood vinegar, biochar, wood tar and high-temperature biomass gas; the biochar produced by carbonization directly enters the activated carbon making equipment, and the generated activated carbon enters the activated carbon purification equipment; the biochar produced by gasification enters the biochar pure oxygen combustion equipment for pure oxygen combustion to provide high-temperature flue gas; the high-temperature biomass gas, the activated carbon making equipment and the high-temperature flue gas discharged from the biomass char pure oxygen combustion equipment are all passed into the supplementary combustion type waste heat boiler;

[0026] 2) The high-temperature water vapor generated after heat exchange by the supplementary combustion waste heat boiler is passed into the gasification and carbonization equipment and the steam explosion equipment as the high-temperature medium for heating, and the discharged sub-high-temperature flue gas is passed into the flue gas waste heat recycling equipment for flue gas recycling to obtain condensed water and biomass gas, which are respectively passed into the gas mixing tank and the gas generator set; a part of the biomass gas is purified, reformed, and separated by the gas mixing tank, purification equipment, methane reforming device, and CO-CO2 separation device, and reacted in the methanol synthesis reactor to synthesize green methanol; the other part of the biomass gas is used for energy generation by the gas generator set to generate green electricity;

[0027] 3) Organic solid waste and organic wastewater enter the steam explosion equipment to generate waste kitchen grease, pulping raw materials, edible mushroom stick raw materials, organic fertilizer raw materials, animal feed raw materials and condensed water; organic solid waste includes straw organic solid waste, livestock and poultry manure with high water content, kitchen waste, sludge, and animal carcasses;

[0028] The condensed water generated by the steam explosion equipment and the condensed water discharged by the flue gas waste heat recycling equipment are both passed through the activated carbon purification equipment for purification treatment, and the purified condensed water is then passed through the deionized water purification equipment to be made into deionized water, and the deionized water enters the electrolytic cell, and the electrolytic cell uses the abandoned wind and abandoned light energy of the wind power generation or photovoltaic power generation system, or the power generation of the gas generator set as the energy source to electrolyze water, and the hydrogen generated by the electrolysis of water is respectively passed through the methanol synthesis reactor, the green diesel production equipment and the ammonia reactor, and the generated oxygen is passed through the gasification and carbonization equipment;

[0029] 4) reacting wood tar produced by gasification and carbonization equipment, waste cooking oil produced by steam explosion equipment and hydrogen produced by electrolysis of water to produce green biodiesel; passing air into an air separation unit for separation to obtain high-purity oxygen and nitrogen, and passing the separated high-purity oxygen into a biomass charcoal pure oxygen combustion device to increase the pure oxygen concentration, and passing the separated high-purity nitrogen into an ammonia synthesis reactor to react with hydrogen produced by a green hydrogen production system to synthesize green ammonia;

[0030] 5) The organic wastewater, steam-exploded straw, and livestock and poultry manure are passed through the anaerobic fermentation equipment for anaerobic fermentation to produce biogas, biogas liquid, and biogas residue; the biogas residue can be used as a solid organic fertilizer raw material, and the biogas liquid can be used as a liquid organic fertilizer raw material; the biogas produced by the fermentation is stored in a biogas tank, and the gas in the biogas tank is desulfurized and passed into a gas mixing tank for reuse.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] (1) Compared with the prior art, the present invention uses a set of equipment to treat all organic solid waste and organic wastewater, reducing equipment investment and floor space; the three technologies of gasification carbonization, steam explosion and anaerobic fermentation are coupled to greatly improve the treatment efficiency and scale benefits;

[0033] (2) The present invention uses multiple gasification furnaces, carbonization furnaces, gasification + carbonization combined furnaces and tunnel kilns and other types of furnaces alone, in combination of two or more, and arranges them in a three-dimensional manner, thereby making up for the shortcomings of various furnace types. Various furnace types complement each other, improve the composition and ratio of carbon monoxide, carbon dioxide and hydrogen in methanol synthesis gas, and save land resources;

[0034] (3) The present invention expands the use range of materials by using steam explosion technology. In addition to straw and wood chips, other organic solid wastes and organic wastewater can be steam exploded. A maximum of 30 sets can be configured, and the volume of the steam explosion tank is greatly increased compared with the original steam explosion tank. Single material steam explosion or multi-material mixed steam explosion can be performed, all of which are fully automatically controlled. After steam explosion, low-grade heat energy is converted into high-grade heat energy and condensed water. The condensed water is purified by activated carbon, deionized and electrolyzed to produce hydrogen and oxygen.

[0035] (4) The present invention uses steam-exploded straw and livestock and poultry manure as steam-exploded materials, converting macromolecules into small molecules, shortening the fermentation cycle, increasing the solid content of the fermented materials, and increasing the biogas production rate of the materials, thereby greatly improving the processing capacity and the biogas production;

[0036] (5) In addition to wind and photovoltaic energy, the energy used in the water splitting method of the present invention to produce hydrogen and oxygen also uses biomass green electricity generated by a gas generator set (a gas internal combustion generator set, a gas turbine, a steam turbine or a combination thereof). A portion of the green electricity is used to split water to produce hydrogen and oxygen, and most of it is used to supply the electricity required for the operation of the entire system. At the same time, innovations are made based on the IGCC technology. The waste heat from power generation is fully recycled and also supplies the operation of the entire system. The carbon monoxide, carbon dioxide and hydrogen and condensed water in the flue gas generated after power generation are also fully recycled. The final products produced are green energy such as green methanol, green ecological organic agricultural materials, green pulp and degradable green paper products;

[0037] (6) The present invention utilizes flue gas waste heat in a secondary cascade manner and recycles materials. The first stage is to produce high-temperature and high-pressure steam. The second stage is to maximize the utilization of the heat energy in the flue gas and obtain carbon monoxide, carbon dioxide, hydrogen and condensed water in the flue gas, which are used to dry the moisture in green ecological organic agricultural materials, green pulp and degradable green paper products and heat deionized water. Finally, the water vapor and carbon monoxide, carbon dioxide and hydrogen in the flue gas after the secondary waste heat utilization are separated, and the water vapor is converted into water condensation. The condensed water is purified by activated carbon, deionized and heated to be used for cracking to produce hydrogen and oxygen or to supply supplementary combustion type waste heat boilers. The carbon monoxide, carbon dioxide and hydrogen separated from the flue gas are maximized to synthesize green methanol or to improve the efficiency of waste heat boilers in producing high-temperature and high-pressure steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic flow diagram of a comprehensive utilization system of high-value organic waste with adjustable target products according to the present invention;

[0039] Figure 2 The figure is a schematic diagram of the overall process of the method for comprehensive utilization of organic waste with high value and adjustable target products according to the present invention. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described below in conjunction with specific embodiments. In the following examples, unless otherwise specified, the technical means used are conventional means well known to those skilled in the art. If specific conditions are not specified in the examples, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0041] Example 1

[0042] Figure 1 The schematic diagram of the structure of the comprehensive utilization system of high-value organic waste with adjustable target products of the present invention. Figure 1 As shown, the high-value and target product-adjustable comprehensive utilization system of organic waste of the present invention includes gasification and carbonization equipment, supplementary combustion type waste heat boiler, gas generator set, steam explosion equipment, activated carbon production equipment, anaerobic fermentation equipment, methanol production system, flue gas waste heat recycling equipment, ammonia production system, biomass charcoal pure oxygen combustion equipment, green hydrogen production system, and biodiesel production system;

[0043] The organic waste is connected to the gasification and carbonization equipment, the steam explosion equipment and the anaerobic fermentation equipment respectively; the gasification and carbonization equipment is connected to the activated carbon production equipment, the biomass charcoal pure oxygen combustion equipment and the supplementary burning type waste heat boiler respectively; the supplementary burning type waste heat boiler is connected to the gasification and carbonization equipment, the steam explosion equipment and the flue gas waste heat recycling equipment respectively; the flue gas waste heat recycling equipment is connected to the methanol production system, the gas generator set and the green hydrogen production system respectively; the steam explosion equipment is connected to the biodiesel production system and the green hydrogen production system respectively; the green hydrogen production system is connected to the ammonia production system.

[0044] Gasification and carbonization equipment is used to obtain wood vinegar, biochar, wood tar and high-temperature biomass gas after gasification and carbonization of organic solid waste with high carbon content (straw, wood chips, fruit shells, etc.); wherein the high-temperature biomass gas contains 30%-45% carbon dioxide, 5%-8% carbon monoxide, 20%-25% hydrogen, 12%-18% methane, and 2% hydrocarbon. The model of the gasification and carbonization equipment is HQ-100 or XDS1500, and the daily processing capacity of the gasification and carbonization equipment is 100-1000 tons;

[0045] The activated carbon making equipment is used to make activated carbon from the biomass carbon produced by carbonization in the gasification carbonization equipment, and the generated activated carbon enters the activated carbon purification equipment; the activated carbon making equipment is connected to the gasification carbonization equipment and the activated carbon purification equipment respectively; among them, the model of the activated carbon making equipment is HQ-1.5, and the activated carbon making equipment produces 8-10 tons of activated carbon per day;

[0046] Biomass charcoal pure oxygen combustion equipment is used to carry out pure oxygen combustion of biomass charcoal produced by gasification in gasification and carbonization equipment to provide high-temperature flue gas; the biomass charcoal pure oxygen combustion equipment is connected to the gasification and carbonization equipment pipeline; wherein, the high-temperature flue gas contains 85% carbon dioxide and 15% carbon monoxide, the model of the biomass charcoal pure oxygen combustion equipment is HQ-2, and the biomass charcoal pure oxygen combustion equipment produces 18-20 tons of high-temperature flue gas per hour;

[0047] The supplementary combustion type waste heat boiler is used for heat exchange between high-temperature biomass gas, high-temperature flue gas and water to produce high-temperature water vapor; the high-temperature biomass gas is discharged from the gasification carbonization equipment, and the high-temperature flue gas is discharged from the activated carbon production equipment and the biomass charcoal pure oxygen combustion equipment; the high-temperature water vapor generated after heat exchange by the supplementary combustion type waste heat boiler is passed into the gasification carbonization equipment and the steam explosion equipment as a high-temperature medium for heating, and the discharged sub-high-temperature flue gas is passed into the flue gas waste heat recycling equipment for flue gas recycling; the supplementary combustion type waste heat boiler is respectively connected to the gasification carbonization equipment , steam explosion equipment, and flue gas waste heat recycling equipment pipeline connection; among them, the model of the supplementary burning type waste heat boiler is Q40 / 900-40-2.5 / 210 or Q750 / 900-75-2.5 / 210, the daily output of high-temperature water vapor is 960-1800 tons, the amount of high-temperature water vapor entering the gasification and carbonization equipment is 30-300 tons, the amount of high-temperature water vapor entering the steam explosion equipment is 40-75 tons per hour, and the daily output of sub-high temperature flue gas discharged is 120-220 tons.

[0048] Flue gas waste heat recycling equipment is used to recycle the sub-high temperature flue gas discharged from the supplementary combustion type waste heat boiler to obtain condensed water and biomass gas, and the obtained biomass gas is respectively introduced into the gas mixing tank and the gas generator set; the flue gas waste heat recycling equipment is respectively connected to the activated carbon purification equipment and the gas mixing tank pipeline; among them, the model of the flue gas waste heat recycling equipment is HPT-150 or HPT250, with a daily condensed water output of 250-500 tons and a daily biomass gas output of 136-250 tons;

[0049] The present invention utilizes flue gas waste heat in a secondary cascade manner and recycles materials. The first stage is to produce high-temperature and high-pressure steam. The second stage is to maximize the utilization of the heat energy in the flue gas and obtain carbon monoxide, carbon dioxide, hydrogen and condensed water in the flue gas, which are used to dry the moisture in green ecological organic agricultural materials, green pulp and degradable green paper products and heat deionized water. Finally, the water vapor and carbon monoxide, carbon dioxide and hydrogen in the flue gas after the secondary waste heat utilization are separated, and the water vapor is converted into water condensation. The condensed water is purified by activated carbon, deionized and heated to crack and produce hydrogen and oxygen or to supply supplementary combustion type waste heat boilers. The carbon monoxide, carbon dioxide and hydrogen separated from the flue gas are maximized to synthesize green methanol or to improve the efficiency of waste heat boilers in producing high-temperature and high-pressure steam.

[0050] The methanol production system is used to purify, reform and separate part of the biomass fuel gas discharged by the flue gas waste heat recycling equipment to synthesize green methanol; the methanol production system includes a gas mixing tank, a purification device, a methane reforming device, a CO-CO2 separation device, and a methanol synthesis reactor, wherein the gas mixing tank, the purification device, the methane reforming device, the CO-CO2 separation device, and the methanol synthesis reactor are connected in sequence by pipelines; the carbon dioxide from the CO-CO2 separation device is used to prepare food-grade dry ice and agricultural dry ice, and the food-grade dry ice is used to make An additive for sparkling water, dry ice for agricultural use is carbon dioxide gas fertilizer; among them, the model of the gas mixing tank is HQ10000, the model of the purification equipment is HQ16000, the model of the methane reforming unit is HQ5000, the model of the CO-CO2 separation unit is HQ16000, the model of the methanol synthesis reactor is HQ4.5 or HQ7, the amount of carbon dioxide obtained by the CO-CO2 separation unit is 35-80 tons, the amount of carbon monoxide is 122-225 tons, and the daily output of synthetic methanol is 136-250 tons.

[0051] The gas generator set is used to generate energy from another part of the biomass gas discharged by the flue gas waste heat recycling equipment to generate biomass green electricity. Part of the green electricity can be used to electrolyze water in the electrolyzer to produce hydrogen and oxygen, and the other part is used to supply the electricity required for the operation of the entire system. Among them, the model of the gas generator set is YF1000 or YF2000, and the daily power output is 24,000-48,000 kWh.

[0052] Steam explosion equipment is used to steam explode organic solid waste and organic wastewater into restaurant waste grease, pulping raw materials, edible mushroom stick raw materials, organic fertilizer raw materials, animal feed raw materials and condensed water. Organic wastewater is high-concentration organic wastewater, and organic solid waste includes straw-type organic solid waste, livestock and poultry manure with high water content, restaurant waste, sludge, animal carcasses and other added materials. Among them, the number of steam explosion equipment can be configured up to 30 sets. The model of the steam explosion equipment is SG10. The daily processing capacity of the steam explosion equipment is 864 tons. The daily output of the steam explosion equipment is 50 tons of restaurant waste grease, the daily output of the steam explosion equipment is 500 tons of pulping raw materials, the daily output of the steam explosion equipment is 200 tons of edible mushroom stick raw materials, the daily output of the steam explosion equipment is 50 tons of organic fertilizer raw materials, the daily output of the steam explosion equipment is 120 tons of animal feed raw materials, and the daily output of the steam explosion equipment is 200 tons of condensed water.

[0053] The biodiesel production equipment (biodiesel production system) is used to react the wood tar produced by the gasification and carbonization equipment, the kitchen waste oil produced by the steam explosion equipment with the hydrogen produced by the electrolysis of water to produce green biodiesel; the biodiesel production equipment is respectively connected to the steam explosion equipment, the gasification and carbonization equipment and the electrolyzer pipeline; among them, the model of the biodiesel production equipment is HQ250, and the daily biodiesel production is 150-220 tons.

[0054] The green hydrogen production system includes activated carbon purification equipment, deionized water purification equipment and an electrolyzer. The condensed water discharged from the steam explosion equipment and the condensed water discharged from the flue gas waste heat recycling equipment are collected. The collected condensed water enters the activated carbon purification equipment and the deionized water purification equipment in turn, and then part of it enters the electrolyzer. The condensed water after electrolysis purification produces hydrogen and oxygen, and the other part enters the supplementary combustion type waste heat boiler.

[0055] The activated carbon purification equipment is used to purify the condensed water discharged from the steam explosion equipment and the condensed water discharged from the flue gas waste heat recycling equipment with activated carbon, using activated carbon produced by the activated carbon production equipment. Among them, the model of the activated carbon purification equipment is HQ2, and the daily condensed water purification capacity of the activated carbon purification equipment is 50 tons.

[0056] Deionized water purification equipment is used to convert condensed water purified by activated carbon purification equipment into deionized water. After the deionized water purification equipment, part of it enters the electrolytic cell to produce hydrogen and oxygen from the electrolyzed purified condensed water, and the other part enters the supplementary combustion type waste heat boiler.

[0057] The deionized water purification equipment is respectively connected to the activated carbon purification equipment, the supplementary combustion type waste heat boiler and the hydrogen and oxygen electrolyzer; among them, the model of the deionized water purification equipment is HQ60, and the daily processing capacity of the deionized water purification equipment is 250-500 tons.

[0058] The electrolyzer is used for green hydrogen production. It uses the abandoned wind and photovoltaic energy of wind power generation or photovoltaic power generation system, or the system's self-generation (gas-fired generator set) as the energy source to electrolyze water (water after deionized water purification equipment). The hydrogen produced by water electrolysis is used to produce methanol, biodiesel and ammonia, and the oxygen produced provides a gasification agent for the gasification of organic solid waste in gasification and carbonization equipment. Among them, the model of the electrolyzer is E-1000, and the daily amount of hydrogen generated by water electrolysis is 24,000 cubic meters (transported to methanol, biodiesel and ammonia production), and the daily amount of oxygen generated by water electrolysis is 200,000 cubic meters.

[0059] The ammonia production system includes an air separation unit and ammonia production equipment.

[0060] The air separation unit is used to separate different gas components in the air to obtain high-purity oxygen and nitrogen. The separated high-purity oxygen is introduced into the biomass charcoal pure oxygen combustion equipment with pure oxygen concentration, and the separated high-purity nitrogen is used to prepare green ammonia; the air separation unit is connected to the biomass charcoal pure oxygen combustion equipment and the ammonia reactor respectively; the model of the air separation unit is HQ1000, and the air separation unit can separate 18,000 cubic meters of nitrogen and 5,000 cubic meters of oxygen per day.

[0061] The ammonia production equipment is used to synthesize green ammonia by reacting the high-purity nitrogen separated by the air separation unit with the produced green hydrogen; among them, the model of the ammonia production equipment is HQ460, and the annual ammonia production capacity of the ammonia production equipment is 10,000 tons.

[0062] Anaerobic fermentation equipment is used to pass organic wastewater (garbage leachate, food processing industry wastewater, papermaking industry wastewater, livestock and poultry wastewater, etc.) and steam-exploded straw and livestock and poultry manure into anaerobic fermentation equipment for anaerobic fermentation to produce biogas, biogas liquid and biogas residue; steam-exploded straw and livestock and poultry manure are added to improve the anaerobic fermentation efficiency and biogas production rate, and shorten the anaerobic fermentation time; biogas residue can be used as a solid organic fertilizer raw material, and biogas liquid can be used as a liquid organic fertilizer raw material. The biogas produced by fermentation is stored in a biogas tank, and the gas in the biogas tank is desulfurized and passed into a gas mixing tank for reuse. Among them, the model of the anaerobic fermentation equipment is HQ5000, with a daily biogas production of 20,000 cubic meters, a daily biogas liquid production of 500 tons, and a daily biogas residue production of 80 tons.

[0063] like Figure 2 As shown, the high-value and target product-adjustable comprehensive utilization method of organic waste of the present invention is: organic solid waste and organic wastewater are resource-utilized through an organic waste coupling treatment device to produce green energy, green electricity, green agricultural materials and green paper products, wherein the green energy includes green methanol, green ammonia, green hydrogen, green oxygen, and green biodiesel; the green agricultural materials include wood vinegar, wood tar, pulping raw materials, edible mushroom stick raw materials, animal feed, solid organic fertilizer, and liquid organic fertilizer.

[0064] The system and method of the present invention are technically upgraded on the basis of the original invention patent CN 113430012 A. The purpose of the upgrade is to enable the entire system to process more organic waste and more types of organic waste with the same investment and the same land area than the original system through the coupling of various technologies, and to produce more types of green products urgently needed by the market, and to produce products with higher added value than the original system: for example, the price of green methanol is 2.5 times higher than that of petrochemical methanol, the price of carbon-based bio-organic fertilizer is 6 times higher than that of organic fertilizer, and the price of biodiesel is 1.5 times higher than that of kitchen waste oil. In addition, a large amount of carbon dioxide emissions can be reduced to participate in market transactions. The system of the present invention also has a bright spot. The system maximizes the utilization of energy, water, and carbon in organic solid waste and organic wastewater to produce various high-value-added green energy, green agricultural materials, green pulp and green paper products. The system of the present invention seems complicated, but it is actually very simple. The entire system is remotely controlled automatically, no "three wastes" are produced, and it meets national environmental protection, fire protection and safety regulations.

[0065] Example 2

[0066] Taking organic waste of a certain county (city) as the treatment object, the high-value comprehensive utilization system of organic waste with adjustable target products of the above embodiment 1 is used for comprehensive utilization, including the following steps:

[0067] (1) A total of 300 tons of organic solid waste materials (including straw blocks, wood chips, fruit shells, corn cobs, etc.) are added to the gasification and carbonization equipment every day, of which 200 tons of straw blocks are used for gasification, and 100 tons of wood chips, fruit shells, corn cobs, etc. are used for carbonization. 50 tons of biomass charcoal is produced after gasification, and 30 tons of biomass charcoal is produced after carbonization; 40 tons of wood vinegar, 6 tons of wood tar, and 270,000 cubic meters of high-temperature biomass gas are produced every day;

[0068] (2) 760 tons of organic waste materials are added to the steam explosion equipment every day, including 200 tons of organic wastewater (organic wastewater contains 2-5% organic matter) and 560 tons of organic solid waste (organic solid waste includes straw, sludge, livestock and poultry feces, restaurant kitchen waste and dead pigs, etc.). After steam explosion by the steam explosion equipment, 570 tons of steam explosion materials are produced (the main components of the steam explosion materials are small molecular fibers and organic matter). The 200 tons of steam explosion materials (mainly straw and livestock and poultry feces steam explosion materials) and 1,000 tons of organic wastewater (organic wastewater contains 2-5% organic matter, including garbage leachate, food processing industry wastewater, papermaking industry wastewater, livestock and poultry wastewater, etc.) produced after steam explosion are passed into anaerobic fermentation equipment for treatment, and 20,000 cubic meters of biogas, 300 tons of biogas liquid and 20 tons of biogas residue are obtained every day;

[0069] (3) The high-temperature biomass gas produced by the gasification and carbonization equipment is introduced into the supplementary combustion type waste heat boiler to obtain high-temperature water vapor (pressure 25 kg), and the high-temperature flue gas produced by the activated carbon production equipment and the pure oxygen combustion of biomass charcoal is introduced into the supplementary combustion type waste heat boiler to obtain a daily output of 180 tons of sub-high-temperature flue gas. The sub-high-temperature flue gas is passed through the flue gas waste heat recycling equipment to obtain a daily output of 40 tons of condensed water and a daily output of 136 tons of biomass gas. Every day, 38,000 cubic meters of biomass gas is introduced into the gas generator set (capacity 1 MW), generating 24,000 kWh of electricity every day, and generating 8.76 million kWh of green electricity every year; the 120 tons of biomass gas produced every day is passed through the purification equipment, methane reforming device, and CO-CO2 separation device to obtain 5,000 tons of carbon monoxide. The carbon monoxide and hydrogen are introduced into the methanol production system to produce 136 tons of green methanol every day. The synthesis of carbon monoxide and hydrogen can produce 45,000 tons of green methanol every year;

[0070] (4) The air is passed through the air separation unit to obtain high-purity nitrogen (7.8 million cubic meters per hour), and the nitrogen and hydrogen are passed into the ammonia synthesis reactor to produce green ammonia (daily output of 30 tons); the condensed water produced by the steam explosion equipment (daily output of 210 tons) and the condensed water produced by the flue gas waste heat recycling equipment (daily output of 50 tons) are successively passed through the activated carbon purification equipment and the deionized water purification equipment to obtain deionized water (daily output of 250 tons), of which 210 tons of deionized water are passed into the electrolyzer to obtain green hydrogen (daily output of 260 million cubic meters) and green oxygen (daily output of 130 million cubic meters); another 40 tons of deionized water are supplied to the supplementary combustion type waste heat boiler; 20,000 tons of wood tar and 40,000 tons of restaurant waste oil are produced each year, which can produce 50,000 tons of green biodiesel;

[0071] (5) Using wood vinegar as a raw material to prepare wood vinegar fertilizer or wood vinegar foliar fertilizer; using biogas slurry as a raw material to prepare liquid organic fertilizer raw materials; using biogas residue as a raw material to prepare solid organic fertilizer raw materials; passing the pulping raw materials obtained after steam explosion into a grinder for grinding, and then passing them into pulping and papermaking equipment to obtain green paper products; using the edible mushroom stick raw materials, organic fertilizer raw materials, and animal feed raw materials obtained after steam explosion for deep processing to prepare edible mushroom sticks, solid organic fertilizer, and animal feed, with an annual output of 3 million edible mushroom sticks, 160,000 tons of carbon-based solid organic fertilizer, and 70,000 tons of animal feed.

[0072] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A high-value comprehensive utilization system of organic waste with adjustable target products, characterized in that: Including gasification and carbonization equipment, supplementary combustion type waste heat boiler, gas generator set, steam explosion equipment, activated carbon production equipment, anaerobic fermentation equipment, methanol production system, flue gas waste heat recycling equipment, ammonia production system, biomass charcoal pure oxygen combustion equipment, green hydrogen production system, biodiesel production system; The organic waste is connected to the gasification and carbonization equipment, the steam explosion equipment and the anaerobic fermentation equipment respectively; the gasification and carbonization equipment is connected to the activated carbon production equipment, the biomass charcoal pure oxygen combustion equipment and the supplementary burning type waste heat boiler respectively; the supplementary burning type waste heat boiler is connected to the gasification and carbonization equipment, the steam explosion equipment and the flue gas waste heat recycling equipment respectively; the flue gas waste heat recycling equipment is connected to the methanol production system, the gas generator set and the green hydrogen production system respectively; the steam explosion equipment is connected to the biodiesel production system and the green hydrogen production system respectively; the green hydrogen production system is connected to the ammonia production system.

2. The high-value and target-product-adjustable comprehensive utilization system of organic waste according to claim 1, characterized in that: The green hydrogen production system includes an activated carbon purification device, a deionized water purification device and an electrolyzer. The condensed water discharged from the steam explosion device and the condensed water discharged from the flue gas waste heat recycling device are collected. After the collected condensed water enters the activated carbon purification device and the deionized water purification device in turn, a part of the condensed water enters the electrolyzer. The condensed water after electrolysis purification produces hydrogen and oxygen, and the other part enters the supplementary combustion type waste heat boiler. Among them, the hydrogen produced by electrolysis of water is used to produce methanol, biodiesel and ammonia, and the oxygen produced provides a gasifying agent for the gasification of organic solid waste in the gasification and carbonization equipment.

3. The high-value and target-product-adjustable comprehensive utilization system of organic waste according to claim 1, characterized in that: The ammonia production system comprises an air separation unit and ammonia production equipment. The air separation unit is used to separate air to obtain high-purity nitrogen. The ammonia production equipment is used to react the high-purity nitrogen obtained by the air separation unit with hydrogen produced by the green hydrogen production system to synthesize green ammonia.

4. The high-value and target-product-adjustable comprehensive utilization system of organic waste according to claim 1, characterized in that: The gasification and carbonization equipment is used to gasify and carbonize organic solid waste with a high carbon content to obtain wood vinegar, biomass charcoal, wood tar and high-temperature biomass fuel gas; The steam explosion equipment is used to steam explode organic solid waste and organic waste liquid to generate kitchen waste grease, pulping raw materials, edible mushroom stick raw materials, organic fertilizer raw materials, animal feed raw materials and condensed water; The anaerobic fermentation equipment is used to pass organic wastewater, steam-exploded straw, and livestock and poultry manure into the anaerobic fermentation equipment for anaerobic fermentation to produce biogas, biogas liquid and biogas residue; the biogas produced by fermentation is stored in a biogas tank, and the gas in the biogas tank is desulfurized and passed into the methanol production system for reuse.

5. The high-value and target-product-adjustable comprehensive utilization system of organic waste according to claim 1, characterized in that: The biodiesel production system is used to react wood tar produced by gasification and carbonization equipment, waste cooking oil produced by steam explosion equipment and hydrogen produced by electrolysis of water to produce green biodiesel.

6. The high-value and target-product-adjustable comprehensive utilization system of organic waste according to claim 1, characterized in that: The supplementary combustion type waste heat boiler is used for heat exchange between high-temperature biomass fuel gas, high-temperature flue gas and water to generate high-temperature water vapor; wherein, the high-temperature biomass fuel gas is discharged from the gasification and carbonization equipment, and the high-temperature flue gas is discharged from the activated carbon production equipment and the biomass charcoal pure oxygen combustion equipment; the high-temperature water vapor generated after heat exchange by the supplementary combustion type waste heat boiler is passed into the gasification and carbonization equipment and the steam explosion equipment as a high-temperature medium for heating, and the discharged sub-high-temperature flue gas is passed into the flue gas waste heat recycling equipment for flue gas recycling.

7. The high-value and target-product-adjustable comprehensive utilization system of organic waste according to claim 1, characterized in that: The methanol production system includes a gas mixing tank, purification equipment, a methane reforming device, a CO-CO2 separation device, and a methanol synthesis reactor, and is used to synthesize green methanol through purification, reforming, and separation reaction of a part of the biomass gas discharged by the flue gas waste heat recycling equipment.

8. The high-value and target-product-adjustable comprehensive utilization system of organic waste according to claim 1, characterized in that: The flue gas waste heat recycling equipment is used to reuse the sub-high temperature flue gas discharged from the supplementary combustion type waste heat boiler to obtain condensed water and biomass gas, and the obtained biomass gas is respectively introduced into the gas mixing tank and the gas generator set.

9. The high-value and target-product-adjustable comprehensive utilization system of organic waste according to claim 1, characterized in that: The activated carbon making equipment is used to make activated carbon from the biomass carbon produced by carbonization in the gasification and carbonization equipment, and the produced activated carbon is transported to the activated carbon purification equipment; The biomass char pure oxygen combustion equipment is used to perform pure oxygen combustion on the biomass char produced by gasification in the gasification and carbonization equipment to provide high-temperature flue gas; The gas generator set is used to generate energy from another part of the biomass gas discharged by the flue gas waste heat recycling equipment, and the generated green electricity can be used for electrolyzing water in an electrolyzer to produce hydrogen and oxygen.

10. A method for comprehensive utilization of organic waste with high value and adjustable target products, characterized in that: The high-value comprehensive utilization system of organic waste with adjustable target products according to any one of claims 1 to 9 comprises the following steps: 1) Organic solid waste with high carbon content enters the gasification and carbonization equipment for gasification and carbonization to obtain wood vinegar, biochar, wood tar and high-temperature biomass gas; the biochar produced by carbonization directly enters the activated carbon making equipment, and the generated activated carbon enters the activated carbon purification equipment; the biochar produced by gasification enters the biochar pure oxygen combustion equipment for pure oxygen combustion to provide high-temperature flue gas; the high-temperature biomass gas, the activated carbon making equipment and the high-temperature flue gas discharged from the biomass char pure oxygen combustion equipment are all introduced into the supplementary combustion type waste heat boiler; 2) The high-temperature water vapor generated after heat exchange by the supplementary combustion waste heat boiler is passed into the gasification and carbonization equipment and the steam explosion equipment as the high-temperature medium for heating, and the discharged sub-high-temperature flue gas is passed into the flue gas waste heat recycling equipment for flue gas recycling to obtain condensed water and biomass gas, which are respectively passed into the gas mixing tank and the gas generator set; a part of the biomass gas is purified, reformed, and separated by the gas mixing tank, purification equipment, methane reforming device, and CO-CO2 separation device, and reacted in the methanol synthesis reactor to synthesize green methanol; the other part of the biomass gas is used for energy generation by the gas generator set to generate green electricity; 3) Organic solid waste and organic wastewater enter the steam explosion equipment to generate waste kitchen grease, pulping raw materials, edible mushroom stick raw materials, organic fertilizer raw materials, animal feed raw materials and condensed water; organic solid waste includes straw organic solid waste, livestock and poultry manure with high water content, kitchen waste, sludge, and animal carcasses; The condensed water generated by the steam explosion equipment and the condensed water discharged by the flue gas waste heat recycling equipment are both passed through the activated carbon purification equipment for purification treatment, and the purified condensed water is then passed through the deionized water purification equipment to be made into deionized water, and the deionized water enters the electrolytic cell, and the electrolytic cell uses the abandoned wind and abandoned light energy of the wind power generation or photovoltaic power generation system, or the power generation of the gas generator set as the energy source to electrolyze water, and the hydrogen generated by the electrolysis of water is respectively passed through the methanol synthesis reactor, the green diesel production equipment and the ammonia reactor, and the generated oxygen is passed through the gasification and carbonization equipment; 4) The wood tar produced by the gasification and carbonization equipment and the waste cooking oil produced by the steam explosion equipment are reacted with the hydrogen produced by the electrolysis of water to produce green biodiesel; the air is introduced into the air separation unit for separation to obtain high-purity oxygen and nitrogen, the separated high-purity oxygen is introduced into the biomass charcoal pure oxygen combustion equipment to increase the pure oxygen concentration, and the separated high-purity nitrogen is introduced into the ammonia synthesis reactor to react with the hydrogen produced by the green hydrogen production system to synthesize green ammonia; 5) The organic wastewater, steam-exploded straw, and livestock and poultry manure are passed through the anaerobic fermentation equipment for anaerobic fermentation to produce biogas, biogas liquid, and biogas residue; the biogas residue can be used as a raw material for solid organic fertilizer, and the biogas liquid can be used as a raw material for liquid organic fertilizer; the biogas produced by fermentation is stored in a biogas tank, and the gas in the biogas tank is desulfurized and passed into a gas mixing tank for reuse.

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