Biomass garbage or sludge treatment device and treatment method

Abstract

The invention discloses a biomass garbage treatment device and a preparation method thereof, and relates to the technical field of garbage treatment, organic garbage or sludge enters a high-temperature fermentation area to be fermented and then enters a drying area to be dried, the dried organic garbage or sludge enters a carbonization area to be carbonized, and carbonized materials enter a cooling area to be cooled; after cooling, discharging to obtain carbide; combustible refuse enters the combustion area to be combusted, first flue gas generated by combustion enters the secondary combustion chamber to be subjected to secondary combustion, second flue gas generated by the secondary combustion chamber controllably enters the carbonization area to serve as a heat source of the carbonization area, and third flue gas generated by the carbonization area passes through the temperature control area and the flue gas quenching system to serve as a heat source of the drying area. According to the device, energy generated by each functional area is fully utilized, and dioxin and tar are prevented from being generated while carbide is obtained.

Description

Technical Field

[0001] The invention relates to the technical field of garbage treatment, and in particular to a biomass garbage or sludge treatment device and a preparation method thereof. Background Art

[0002] Agricultural waste is the general term for waste discharged from agricultural production, agricultural product processing, livestock and poultry farming, and rural residents' lives. Agricultural waste is also called agricultural garbage. According to its composition, it includes plant fiber waste and livestock and poultry manure. It is the difference between resource input and output materials and energy in the agricultural production and reproduction chain, and is the share of material and energy loss produced in resource utilization.

[0003] At present, the problem of agricultural waste pollution has become the focus of global attention. According to statistics, of the 820 million tons of crop straw produced each year in the country, 215 million tons are burned and discarded. It not only wastes energy, reduces the organic matter content of the soil, causes soil compaction and water storage capacity to decrease, but also seriously pollutes the atmosphere and water environment. In order to solve the problem of agricultural waste pollution, the state has issued the "Notice on Issuing the Energy Development Plan", which points out the active development of biomass liquid fuel, gas fuel, and solid molded fuel, and promotes biogas power generation and biomass gasification power generation. In this context, it is very necessary to manage agricultural waste. For agricultural waste, direct combustion power generation is the most mature treatment technology at present, but biomass power generation is only feasible in areas with good resource endowments, and when the amount of a single resource raw material is small, the scale of power generation is small and the economy is poor. Therefore, the method of direct combustion to treat agricultural waste is subject to many restrictions.

[0004] Sludge is the sediment discharged from sewage treatment facilities. The sediment with organic matter as the main component is called sludge, which is easy to decompose and stink, has fine particles, small specific gravity, high water content and is not easy to dehydrate. It is a hydrophilic substance with a colloidal structure.

[0005] The Chinese patent with publication number CN102660306A and publication date 2012.09.12 discloses a countercurrent rotating household garbage pyrolysis carbonization furnace system, which is composed of a feed device, a pyrolysis carbonization furnace body, and a slag discharge spiral device arranged and connected in sequence; the feed device is composed of a feed port, an extrusion chamber, a pusher, and a solid material one-way valve. The extrusion chamber is a cylindrical channel, the feed port is connected to the front side wall of the extrusion chamber, the pusher is located in the extrusion chamber below the feed port, and the solid material one-way valve is arranged in the chamber of the middle and rear section of the extrusion chamber; the pyrolysis carbonization furnace body includes a pyrolysis carbonization furnace inner sleeve, a pyrolysis carbonization furnace outer sleeve, and a diameter A large spiral stirrer which is not larger than the inner diameter of the inner sleeve of the pyrolysis carbonization furnace, a built-in rotating screen with a diameter not larger than the inner diameter of the inner sleeve of the pyrolysis carbonization furnace, a small spiral stirrer, and a driving device; the inner sleeve of the pyrolysis carbonization furnace is arranged in the outer sleeve of the pyrolysis carbonization furnace, and a sealing ring which can make the inner sleeve of the pyrolysis carbonization furnace rotate while the outer sleeve of the pyrolysis carbonization furnace is stationary is arranged between the two ends of the outer sleeve of the pyrolysis carbonization furnace and the outer wall of the inner sleeve of the pyrolysis carbonization furnace, and the gap between the inner sleeve of the pyrolysis carbonization furnace and the outer sleeve of the pyrolysis carbonization furnace forms a pyrolysis carbonization furnace interlayer; the two ends of the inner sleeve of the pyrolysis carbonization furnace extend out of the outer sleeve of the pyrolysis carbonization furnace, and the output shaft of the driving device is connected to the pyrolysis carbonization furnace. The inner sleeve of the pyrolysis carbonization furnace is decomposed and driven, a feed box sealing ring is provided at the connection between the extrusion cavity and the front end panel of the inner sleeve, a large spiral agitator is arranged in the front half of the inner sleeve cavity of the pyrolysis carbonization furnace, a small spiral agitator is arranged in the rear half of the inner sleeve cavity of the pyrolysis carbonization furnace, a built-in rotating screen is arranged between the large spiral agitator and the small spiral agitator, a combustion gas inlet and a smoke outlet connected to the interlayer of the pyrolysis carbonization furnace are arranged on the outer sleeve of the pyrolysis carbonization furnace, a pyrolysis gas outlet connecting the inner sleeve of the pyrolysis carbonization furnace with the outside is also arranged on the feed box sealing ring provided at the front end of the inner sleeve of the pyrolysis carbonization furnace; the slag discharge spiral is composed of a spiral It consists of an outer shell, a cooling water jacket, a spiral shaft, and a motor. A discharge box sealing ring is provided at the connection between the front section of the spiral shell and the rear end face of the inner sleeve of the pyrolysis carbonization furnace. A carbon inlet is provided above the shell of the part of the spiral shell extending into the inner sleeve of the pyrolysis carbonization furnace; a cooling water jacket is provided on the outer wall of the part of the spiral shell that does not extend into the inner sleeve of the pyrolysis carbonization furnace. The outer wall of the cooling water jacket is provided with a cooling water inlet and a cooling water outlet respectively. A carbon outlet connected to the outside is also provided below the side wall of the last section of the spiral shell that does not extend into the inner sleeve of the pyrolysis carbonization furnace; the two ends of the spiral shaft are connected to the front and rear ends of the spiral shell, and the spiral shaft is connected to the motor and driven by the motor. This system has high energy consumption when in use, and tar will be generated during garbage carbonization. Summary of the invention

[0006] The present invention aims to solve the problems of high energy consumption and tar generation during garbage carbonization in the prior art, and provides a biomass garbage or sludge treatment device and method thereof. Organic garbage or sludge enters the high-temperature fermentation zone for fermentation and then enters the drying zone for drying. The dried organic garbage or sludge enters the carbonization zone for carbonization. The carbonized product after carbonization enters the cooling zone for cooling. After cooling, it is discharged to obtain carbonized product. The combustible garbage enters the combustion zone for combustion, and the first flue gas generated by the combustion enters the secondary combustion chamber for secondary combustion. The second flue gas generated by the secondary combustion chamber can be controlled to enter the carbonization zone as a heat source for the carbonization zone. The third flue gas generated by the carbonization zone is used as a heat source for the drying zone after passing through the temperature control zone and the flue gas quenching system. The device makes full use of the energy generated by each functional zone to obtain carbonized product while avoiding the generation of dioxins and tar.

[0007] The objective of the present invention is achieved through the following technical solutions: The biomass waste or sludge treatment device comprises a wet high-temperature anaerobic fermentation zone, a dry high-temperature anaerobic fermentation zone and a combustion zone, wherein the gas outlet end of the wet high-temperature anaerobic fermentation zone is connected to the gas outlet end of the dry high-temperature anaerobic fermentation zone and the auxiliary ignition device in the combustion zone, the material outlet end of the wet high-temperature anaerobic fermentation zone and the material outlet end of the dry high-temperature anaerobic fermentation zone are connected to the feed end of the drying zone through a conveyor, the drying zone is connected to the carbonization zone and the cooling zone in sequence, a screw drive is arranged in the drying zone, the carbonization zone and the cooling zone, a first smoke outlet of the combustion zone is connected to the lower end of the second combustion chamber, the upper end of the second combustion chamber is connected to the lower end of the carbonization zone, the upper end of the carbonization zone is connected to the temperature control zone, the upper end of the temperature control zone is provided with an exhaust gas discharge port, and the exhaust gas discharge port is connected to the inlet of the smoke quenching system.

[0008] A method for treating biomass waste or sludge comprises the following steps: Step 1: Biomass waste or sludge enters the treatment station and is screened into organic waste with high moisture content, organic waste with low moisture content and combustible waste; Step 2: The organic waste with high water content is subjected to wet high-temperature anaerobic fermentation in the wet high-temperature anaerobic fermentation area. The biogas generated in the wet high-temperature anaerobic fermentation area is used for auxiliary ignition or power generation in the combustion area and the secondary combustion chamber. The organic waste after wet high-temperature anaerobic fermentation is transported to the drying area. Step 3: The organic waste with low moisture content is subjected to dry high-temperature fermentation in the dry high-temperature anaerobic fermentation area. The biogas generated in the dry high-temperature anaerobic fermentation area is used for auxiliary ignition or power generation in the combustion area and the secondary combustion chamber. The organic waste after dry high-temperature anaerobic fermentation is transported to the drying area. Step 4: Drying the organic waste after wet high-temperature anaerobic fermentation and the organic waste after dry high-temperature anaerobic fermentation in a drying area, and transporting the dried organic waste to a carbonization area; Step 5: The combustible garbage enters the combustion zone and burns. The heat generated by the combustion and the first flue gas enter the secondary combustion chamber for secondary combustion. The heat generated by the secondary combustion chamber and the second flue gas enter the carbonization zone as a heat source. Step 6: The dried organic waste is carbonized in the carbonization zone to form carbonized products and third flue gas. The third flue gas is discharged after passing through the temperature control zone, and the carbonized products are transported to the cooling zone. Step 7: The carbonized material is cooled in the cooling zone and discharged after cooling.

[0009] Preferably, in step 1, the biomass waste or sludge enters the processing station and is crushed, screened and dehydrated to obtain organic waste with high moisture content, organic waste with low moisture content and combustible waste.

[0010] Preferably, in step 2, the temperature of the wet high-temperature anaerobic fermentation zone is 50-60°C, the wet high-temperature fermentation time is 4-6 days, and the moisture content of the organic waste after the wet high-temperature fermentation is greater than 85%.

[0011] Preferably, in step three, the temperature of the dry high-temperature anaerobic fermentation zone is 50-60° C., the dry high-temperature fermentation time is 4-6 days, and the moisture content of the organic waste in the dry high-temperature fermentation is 45-55%.

[0012] Preferably, in step 2 and step 3, the wet high-temperature anaerobic fermentation zone and the dry high-temperature anaerobic fermentation zone are assisted in heating by high-temperature cooling water in the cooling zone.

[0013] Preferably, in step 4, the temperature of the drying zone is 180-220° C., the drying time is 1-4 hours, and the moisture content of the organic waste after drying is less than 30%.

[0014] Preferably, the third flue gas produced in the temperature control zone is used as the heat source of the drying zone after passing through the flue gas rapid cooling system, and the dried waste gas is discharged from the waste gas discharge port and discharged after being treated by the waste gas treatment system.

[0015] Preferably, in step six, the temperature of the carbonization zone is 400-600° C., and the temperature in the carbonization zone is controlled by controlling the second flue gas entering the carbonized material from the secondary combustion chamber, and the carbonization time is 1-2 hours.

[0016] Preferably, in step seven, the cooling zone is cooled by an external cooling interlayer, and circulating cooling water is introduced into the cooling interlayer for cooling, and the cooling time is 1-2 hours.

[0017] The beneficial effects of this technical solution are as follows: 1. The biomass waste or sludge treatment device provided by the present invention, organic waste or sludge enters the high-temperature fermentation zone for fermentation and then enters the drying zone for drying, the dried organic waste or sludge enters the carbonization zone for carbonization, the carbonized product enters the cooling zone for cooling, and is discharged after cooling to obtain the carbonized product; the combustible waste enters the combustion zone for combustion, the first flue gas generated by the combustion enters the secondary combustion chamber for secondary combustion, the second flue gas generated by the secondary combustion chamber can be controlled to enter the carbonization zone as the heat source of the carbonization zone, and the third flue gas generated by the carbonization zone is used as the heat source of the drying zone after passing through the temperature control zone and the flue gas quenching system. This device makes full use of the energy generated by each functional zone to obtain the carbonized product while avoiding the generation of dioxins and tar.

[0018] 2. The method for treating biomass waste or sludge provided by the present invention screens biomass waste or sludge into organic waste with high moisture content, organic waste with low moisture content and combustible waste. The biogas produced by high-temperature anaerobic fermentation of organic waste is used as auxiliary ignition gas for the combustion zone and the secondary combustion chamber. The organic waste after high-temperature anaerobic fermentation enters the drying zone for drying, and then enters the carbonization zone for carbonization. During carbonization, the heat generated by the combustion zone and the secondary combustion chamber is utilized, and the carbonization temperature is maintained at 600-800°C. The third flue gas produced by carbonization enters the temperature control zone, and after passing through the temperature control zone, enters the flue gas rapid cooling system and serves as the heat source for the drying zone. The use of the flue gas rapid cooling system avoids the formation of dioxins. The dried waste gas is discharged from the waste gas discharge port and discharged after being treated by the waste gas treatment system; the carbonized gas produced in the carbonization zone enters the cooling zone, and is cooled by a cooling jacket arranged outside the cooling zone. The carbonized product after cooling is discharged from the carbonization outlet. The present invention effectively utilizes biomass waste to prepare carbonized materials. This process fully utilizes the energy generated by each functional area, reduces energy consumption during waste treatment, and avoids the generation of harmful substances (including dioxins and tar). BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the biomass waste or sludge treatment device of the present invention; In the figure: 100, wet high-temperature anaerobic fermentation zone; 200, dry high-temperature anaerobic fermentation zone; 300, combustion zone; 400, drying zone; 500, carbonization zone; 600, cooling zone; 700, temperature control zone; 800, secondary combustion chamber; 900, screw drive machine. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0021] It should be noted that when a component is referred to as being "mounted on", "fixed on" or "disposed on" another component, it may be directly on the other component or there may be a central component at the same time. When a component is referred to as being "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time.

[0022] It should also be noted that the directional terms such as left, right, up, and down in the embodiments of the present invention are merely relative concepts or are based on the normal use status of the product and should not be considered as restrictive.

[0023] Example 1 like Figure 1 As shown, the biomass waste or sludge treatment device includes a wet high-temperature anaerobic fermentation zone 100, a dry high-temperature anaerobic fermentation zone 200 and a combustion zone 300. The gas outlet of the wet high-temperature anaerobic fermentation zone 100 is connected to the gas outlet of the dry high-temperature anaerobic fermentation zone 200 and the auxiliary ignition device in the combustion zone 300. The material outlet of the wet high-temperature anaerobic fermentation zone 100 and the material outlet of the dry high-temperature anaerobic fermentation zone 200 are connected to the feed end of the drying zone 400 through a conveyor. 400 is connected with the carbonization zone 500 and the cooling zone 600 in sequence, and a screw drive machine 900 is provided in the drying zone 400, the carbonization zone 500 and the cooling zone 600, the first flue gas outlet of the combustion zone 300 is connected with the lower end of the secondary combustion chamber 800, the upper end of the secondary combustion chamber 800 is connected with the lower end of the carbonization zone 500, the upper end of the carbonization zone 500 is connected with the temperature control zone 700, and the upper end of the temperature control zone 700 is provided with an exhaust port, and the exhaust port is connected with the inlet of the flue gas rapid cooling system.

[0024] Among them, the wet high-temperature anaerobic fermentation area 100 includes a wet high-temperature fermentation box, which is provided with a first fermentation area feed inlet, a first fermentation area discharge port, a first biogas outlet and a biogas liquid outlet pipe. The first biogas outlet is connected to the auxiliary ignition device through a first branch pipe; the first biogas outlet is connected to the biogas storage tank through a second branch pipe.

[0025] Among them, the dry high-temperature anaerobic fermentation area 200 includes a wet high-temperature fermentation box, which is provided with a second fermentation area feed inlet, a second fermentation area discharge port and a second biogas outlet. The second biogas outlet is connected to the auxiliary ignition device through a first branch pipe, and the second biogas outlet is connected to the biogas storage cabinet through a second branch pipe; the upper end of the wet high-temperature fermentation box is also connected to the biogas liquid outlet pipe.

[0026] Among them, the combustion area 300 includes a combustion box, which is provided with a combustion chamber and a first auxiliary ignition device, an ash hopper is provided at the lower end of the combustion chamber, and a first flue gas outlet is provided at the upper end of the combustion chamber, and the first flue gas outlet is connected to the second combustion chamber 800. A combustible waste inlet is also provided on the combustion box, and the combustible waste inlet is connected to the combustion chamber.

[0027] Among them, the lower end of the secondary combustion chamber 800 is connected to the first flue gas outlet, and the second flue gas outlet at the upper end of the secondary combustion chamber 800 is connected to the carbonization zone 500; the secondary combustion chamber 800 is provided with a secondary combustion chamber temperature sensor, a secondary combustion chamber oxygen concentration sensor, a secondary combustion chamber air inlet valve, a secondary combustion chamber gas valve and a second ignition device, the second ignition device is connected to the air inlet pipe and the first branch pipe, the secondary combustion chamber air inlet valve and the secondary combustion chamber gas valve are respectively arranged on the air inlet pipe and the first branch pipe; the secondary combustion chamber temperature sensor is used to detect the temperature in the secondary combustion chamber; the secondary combustion chamber oxygen concentration sensor is used to detect the oxygen concentration in the secondary combustion chamber.

[0028] The drying zone 400 includes a drying box, an organic waste inlet is provided on the drying box, a drying zone outlet is provided along the conveying direction of the screw drive 900, and the drying zone outlet is connected to the inlet of the carbonization zone 500.

[0029] Among them, the lower end of the carbonization zone 500 is connected to the second smoke outlet through several ventilation pipes, and a ventilation valve is arranged on the ventilation pipe. The carbonization zone 500 includes a carbonization zone inlet and a carbonization zone outlet, and the carbonization zone inlet and the carbonization zone outlet are arranged along the conveying direction of the screw drive machine 900. A gas composition sensor and a carbonization zone temperature sensor are arranged in the carbonization zone 500; the gas composition sensor is used to detect the gas composition in the carbonization zone; the carbonization zone temperature sensor is used to detect the temperature of the carbonization zone.

[0030] The lower end of the temperature control zone 700 is connected to the upper end of the carbonization zone 500 through an induced draft fan, and a tail gas discharge port of the temperature control zone is provided at the upper end of the temperature control zone 700, and the tail gas discharge port is connected to the inlet of the flue gas quenching system, and the outlet of the flue gas quenching system is connected to the drying zone 400 through a tail gas pipe; a temperature sensor of the temperature control zone is provided in the temperature control zone 700; the temperature sensor of the temperature control zone is used to detect the temperature in the temperature control zone. The flue gas quenching system includes a waste heat boiler, a water-cooled dust collector, a bag dust collector and a flue gas discharge tower connected in sequence.

[0031] Among them, the cooling zone 600 includes a cooling zone inlet and a cooling zone outlet, and the cooling zone inlet and the cooling zone outlet are arranged along the conveying direction of the screw drive machine 900, the cooling zone inlet is connected to the carbonization zone outlet, and the cooling zone 600 has a second cooling jacket, and the second cooling jacket is connected to the second cooling water inlet pipe and the second cooling water outlet pipe; the cooling zone outlet is connected to the carbonized material outlet.

[0032] Wherein, it also includes a controller, which is connected to the screw drive machine 900, the first auxiliary ignition device, the secondary combustion chamber temperature sensor, the secondary combustion chamber oxygen concentration sensor, the secondary combustion chamber air inlet valve, the secondary combustion chamber gas valve, the second ignition device, the ventilation valve, the gas composition sensor, the carbonization zone temperature sensor and the temperature control zone temperature sensor; the controller controls the opening or closing of the first auxiliary ignition device and the second ignition device, and the controller controls the operation of the screw drive machine 900, thereby controlling the drying time, carbonization time and cooling time; the data of the secondary combustion chamber temperature sensor is uploaded to the controller, and the controller controls the opening of the secondary combustion chamber air inlet valve and the secondary combustion chamber gas valve, thereby adjusting the temperature of the secondary combustion chamber 800; the data of the carbonization zone temperature sensor is uploaded to the controller, and the controller controls the opening or closing of the ventilation valve, thereby controlling the second flue gas volume entering the carbonization zone from the secondary combustion chamber 800, thereby controlling the temperature of the carbonization zone 500.

[0033] Example 2 This embodiment adopts the biomass waste or sludge treatment device and the biomass waste or sludge treatment method in Embodiment 1, comprising the following steps: Step 1: Biomass waste or sludge enters the treatment station and is screened into organic waste with high moisture content, organic waste with low moisture content and combustible waste; Step 2: The organic waste with high water content is subjected to wet high-temperature anaerobic fermentation in the wet high-temperature anaerobic fermentation area 100. The biogas produced in the wet high-temperature anaerobic fermentation area 100 is used for auxiliary ignition or power generation in the combustion area 300 and the secondary combustion chamber 800. The organic waste after wet high-temperature anaerobic fermentation is transported to the drying area 400. Step 3: The organic waste with low moisture content is subjected to dry high temperature fermentation in the dry high temperature anaerobic fermentation area 200. The biogas generated in the dry high temperature anaerobic fermentation area 200 is used for auxiliary ignition or power generation in the combustion area 300 and the secondary combustion chamber 800. The organic waste after dry high temperature anaerobic fermentation is transported to the drying area 400. Step 4: The organic waste after wet high-temperature anaerobic fermentation and the organic waste after dry high-temperature anaerobic fermentation are dried in the drying area 400, and the dried organic waste is transported to the carbonization area 500; Step 5: The combustible garbage enters the combustion zone 300 for combustion, and the heat generated by the combustion and the first flue gas enter the secondary combustion chamber 800 for secondary combustion. The heat generated by the secondary combustion chamber 800 and the second flue gas enter the carbonization zone 500 as a heat source; Step 6: The dried organic waste is carbonized in the carbonization zone 500 to form carbonized products and third flue gas. The third flue gas is discharged after passing through the temperature control zone 700, and the carbonized products are transported to the cooling zone 600. Step 7: The carbonized material is cooled in the cooling zone 600 and discharged after cooling.

[0034] Among them, in the step 1, the biomass waste or sludge enters the processing station and is crushed, screened and dehydrated to obtain organic waste with high moisture content, organic waste with low moisture content and combustible waste.

[0035] Wherein, in the step 2, the temperature of the wet high-temperature anaerobic fermentation zone 100 is 50-60°C, the wet high-temperature fermentation time is 4-6 days, and the moisture content of the organic waste after the wet high-temperature fermentation is greater than 85%.

[0036] Wherein, in the step 3, the temperature of the dry high temperature anaerobic fermentation zone 200 is 50-60°C, the dry high temperature fermentation time is 4-6 days, and the moisture content of the organic waste in the dry high temperature fermentation is 45-55%.

[0037] In the step 2 and the step 3, the wet high-temperature anaerobic fermentation zone 100 and the dry high-temperature anaerobic fermentation zone 200 are assisted in heating by the high-temperature cooling water of the cooling zone 600 .

[0038] Wherein, in the step 4, the temperature of the drying zone 400 is 180-220° C., the drying time is 1-4 hours, and the moisture content of the organic waste after drying is less than 30%.

[0039] The third flue gas produced in the temperature control zone 700 is used as the heat source of the drying zone 400 after passing through the flue gas rapid cooling system, and the dried waste gas is discharged from the waste gas discharge port and discharged after being treated by the waste gas treatment system.

[0040] Wherein, in the step six, the temperature of the carbonization zone 500 is 400-600°C, and the temperature in the carbonization zone 500 is controlled by controlling the second flue gas entering the carbonized material from the secondary combustion chamber 800, and the carbonization time is 1-2h.

[0041] Among them, in the step seven, the cooling zone 600 is cooled by an external cooling interlayer, and circulating cooling water is introduced into the cooling interlayer for cooling, and the cooling time is 1-2 hours.

[0042] The beneficial effects of this technical solution are as follows: 1. The biomass waste or sludge treatment device provided by the present invention, organic waste or sludge enters the high-temperature fermentation zone for fermentation and then enters the drying zone 400 for drying, the dried organic waste or sludge enters the carbonization zone 500 for carbonization, the carbonized product enters the cooling zone 600 for cooling, and is discharged to obtain the carbonized product after cooling; the combustible waste enters the combustion zone 300 for combustion, the first flue gas generated by the combustion enters the secondary combustion chamber 800 for secondary combustion, the second flue gas generated by the secondary combustion chamber 800 can be controlled to enter the carbonization zone 500 as the heat source of the carbonization zone 500, and the third flue gas generated by the carbonization zone 500 passes through the temperature control zone 700 and the flue gas quenching system as the heat source of the drying zone 400. The device makes full use of the energy generated by each functional zone to obtain the carbonized product while avoiding the generation of dioxins and tar.

[0043] 2. The biomass waste or sludge treatment method provided by the present invention screens the biomass waste or sludge into organic waste with high moisture content, organic waste with low moisture content and combustible waste. The biogas produced by high-temperature anaerobic fermentation of the organic waste is used as the auxiliary ignition gas of the combustion zone 300 and the secondary combustion chamber 800. The organic waste after high-temperature anaerobic fermentation of the organic waste enters the drying zone 400 for drying, and then enters the carbonization zone 500 for carbonization. During carbonization, the heat generated by the combustion zone 300 and the secondary combustion chamber 800 is used, and the carbonization temperature is maintained at At 600-800℃, the third flue gas produced by carbonization enters the temperature control zone 700, and after passing through the temperature control zone 700, enters the flue gas rapid cooling system and serves as the heat source of the drying zone 400. The use of the flue gas rapid cooling system avoids the generation of dioxins. The dried waste gas is discharged from the waste gas discharge port and discharged after being treated by the waste gas treatment system; the carbonization zone 500 produced by the carbonization zone 500 enters the cooling zone 600, and is cooled by the cooling jacket arranged outside the cooling zone 600. The carbonized product after cooling is discharged from the carbonized product outlet. The present invention effectively utilizes biomass waste to prepare carbonized products. This process fully utilizes the energy generated by each functional zone, reduces the energy consumption during waste treatment, and avoids the generation of harmful substances (including dioxins and tar).

[0044] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. Biomass waste or sludge treatment device, Features: The invention comprises a wet high-temperature anaerobic fermentation zone (100), a dry high-temperature anaerobic fermentation zone (200) and a combustion zone (300), wherein the gas outlet of the wet high-temperature anaerobic fermentation zone (100) is connected to the gas outlet of the dry high-temperature anaerobic fermentation zone (200) and the auxiliary ignition device in the combustion zone (300), the material outlet of the wet high-temperature anaerobic fermentation zone (100) is connected to the material outlet of the dry high-temperature anaerobic fermentation zone (200) through a conveyor and the feed end of the drying zone (400), and the drying zone (400) is connected to the carbonization zone (500). ) and a cooling zone (600) are connected in sequence; a screw drive machine (900) is provided in the drying zone (400), the carbonization zone (500) and the cooling zone (600); a first smoke outlet of the combustion zone (300) is connected to the lower end of the secondary combustion chamber (800); an upper end of the secondary combustion chamber (800) is connected to the lower end of the carbonization zone (500); an upper end of the carbonization zone (500) is connected to the temperature control zone (700); an exhaust gas discharge port is provided at the upper end of the temperature control zone (700); and the exhaust gas discharge port is connected to an inlet of a smoke quenching system.

2. Biomass waste or sludge treatment methods, It is characterized in that The biomass waste or sludge treatment device according to claim 1 comprises the following steps: Step 1: Biomass waste or sludge enters the treatment station and is screened into organic waste with high moisture content, organic waste with low moisture content and combustible waste; Step 2: The organic waste with high water content is subjected to wet high-temperature anaerobic fermentation in the wet high-temperature anaerobic fermentation zone (100); the biogas generated in the wet high-temperature anaerobic fermentation zone (100) is used for auxiliary ignition or power generation in the combustion zone (300) and the secondary combustion chamber (800); the organic waste after the wet high-temperature anaerobic fermentation is transported to the drying zone (400); Step 3: The organic waste with low moisture content is subjected to dry high-temperature fermentation in the dry high-temperature anaerobic fermentation zone (200); the biogas generated in the dry high-temperature anaerobic fermentation zone (200) is used for auxiliary ignition or power generation in the combustion zone (300) and the secondary combustion chamber (800); the organic waste after the dry high-temperature anaerobic fermentation is transported to the drying zone (400); Step 4: Drying the organic waste after wet high-temperature anaerobic fermentation and the organic waste after dry high-temperature anaerobic fermentation in the drying area (400), and the dried organic waste is transported to the carbonization area (500); Step 5: The combustible waste enters the combustion zone (300) for combustion, and the heat generated by the combustion and the first flue gas enter the secondary combustion chamber (800) for secondary combustion, and the heat generated by the secondary combustion chamber (800) and the second flue gas enter the carbonization zone (500) as a heat source; Step 6: The dried organic waste is carbonized in the carbonization zone (500) to form carbonized products and third flue gas. The third flue gas is discharged after passing through the temperature control zone (700), and the carbonized products are transported to the cooling zone (600). Step 7: The carbonized material is cooled in the cooling zone (600) and discharged after cooling.

3. The method for treating biomass waste or sludge according to claim 2, Features: In the first step, the biomass waste or sludge enters the treatment station and, after being crushed, screened, and dehydrated, high-moisture organic waste, low-moisture organic waste, and combustible waste are obtained.

4. The biomass waste or sludge treatment method according to claim 2, characterized in that: In the second step, the temperature in the wet high-temperature anaerobic fermentation zone (100) is 50 - 60 °C, the wet high-temperature fermentation time is 4 - 6 days, and the moisture content of the organic waste after wet high-temperature fermentation is greater than 85%.

5. The biomass waste or sludge treatment method according to claim 2, characterized in that: In the third step, the temperature in the dry high-temperature anaerobic fermentation zone (200) is 50 - 60 °C, the dry high-temperature fermentation time is 4 - 6 days, and the moisture content of the organic waste in dry high-temperature fermentation is 45 - 55%.

6. The biomass waste or sludge treatment method according to claim 2, characterized in that: In the second and third steps, the wet high-temperature anaerobic fermentation zone (100) and the dry high-temperature anaerobic fermentation zone (200) are assisted in heating by the high-temperature cooling water in the cooling zone (600).

7. The biomass waste or sludge treatment method according to claim 2, characterized in that: In the fourth step, the temperature in the drying zone (400) is 180 - 220 °C, the drying time is 1 - 4 h, and the moisture content of the organic waste after drying is less than 30%.

8. The biomass waste or sludge treatment method according to claim 2, characterized in that: The third flue gas produced in the temperature control zone (700) is used as the heat source for the drying zone (400) after passing through the flue gas quenching system, and the exhaust gas after drying is discharged from the exhaust gas discharge port and discharged after being treated by the exhaust gas treatment system.

9. The biomass waste or sludge treatment method according to claim 2, characterized in that: In the sixth step, the temperature in the carbonization zone (500) is 400 - 600 °C, and the temperature in the carbonization zone (500) is controlled by controlling the second flue gas entering the carbide from the secondary combustion chamber (800), and the carbonization time is 1 - 2 h.

10. The biomass waste or sludge treatment method according to claim 2, characterized in that: In the seventh step, the cooling zone (600) is cooled by an external cooling interlayer, and circulating cooling water is introduced into the cooling interlayer for cooling, and the cooling time is 1 - 2 h.

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