Pyrolysis product separation system

Abstract

The embodiment of the utility model provides a pyrolysis product separation system which comprises a pyrolysis system used for carrying out pyrolysis reaction on waste raw materials to generate high-temperature flue gas and coarse particle carbon black; the separation system is connected with the pyrolysis system through a pipeline and is used for carrying out multi-stage separation treatment on pyrolysis oil, pyrolysis gas, fly ash and fine-particle carbon black in the high-temperature flue gas; the purification system is connected with the separation system through a pipeline, and pyrolysis gas obtained through separation is purified and then discharged; wherein the separation system comprises a metal dust remover and is used for realizing primary separation of fly ash and second mixed gas containing pyrolytic oil and pyrolysis gas; the spray water scrubber is connected with the metal dust remover, and deep separation of pyrolysis oil and pyrolysis gas is realized through cooling and water washing. According to the embodiment of the utility model, separation treatment of waste pyrolysis products is realized through the pyrolysis system, fine separation and purification of the products are realized by adopting the separation system and the purification system, and the problems of separation and recovery of solid-liquid products in a pyrolysis technology are solved.

Description

Technical Field

[0001] This utility model relates to the field of pyrolysis product separation technology, and in particular to a pyrolysis product separation system. Background Technology

[0002] Conventional pyrolysis gasification technology generates liquid byproducts and fly ash when processing organic waste or biomass. The liquid byproducts tend to condense during cooling, leading to blockages in pipes or equipment and affecting the continuity and stability of the system. Simultaneously, the fly ash entrained in the liquid byproducts is difficult to separate effectively, making it impossible to collect separately and reducing the efficiency of resource utilization. However, current technologies typically employ simple cooling and filtration devices, which cannot completely solve the problems of liquid byproduct blockage and fly ash separation. Utility Model Content

[0003] In view of the above problems, embodiments of the present invention are proposed to provide a pyrolysis product separation system that overcomes or at least partially solves the above problems.

[0004] To address the aforementioned problems, this utility model discloses a pyrolysis product separation system, comprising:

[0005] The pyrolysis system is used to pyrolyze waste raw materials to generate high-temperature flue gas and coarse carbon black particles;

[0006] A separation system, connected to the pyrolysis system, is used to receive the high-temperature flue gas output by the pyrolysis system; the high-temperature flue gas includes pyrolysis oil, pyrolysis gas, fly ash, and fine particulate carbon black; the high-temperature flue gas is subjected to separation treatment to obtain pyrolysis oil, pyrolysis gas, fly ash, and fine particulate carbon black that are separated individually;

[0007] A purification system, connected to the separation system, is used to receive the pyrolysis gas output by the separation system, purify the pyrolysis gas, and discharge it.

[0008] The separation system includes:

[0009] A metal dust collector is used to separate a first mixed gas in the high-temperature flue gas, thereby separating a second mixed gas from the fly ash; the first mixed gas includes: the pyrolysis oil, the pyrolysis gas, and the fly ash; the second mixed gas includes: the pyrolysis oil and the pyrolysis gas;

[0010] A spray water washing tower is used to cool and wash the second mixed gas to separate the pyrolysis oil and the pyrolysis gas.

[0011] Optionally, the pyrolysis system includes:

[0012] A pretreatment device is used to pretreat waste raw materials to generate waste pellets;

[0013] A pyrolysis device is used to pyrolyze the waste particles to generate the high-temperature flue gas and coarse carbon black particles;

[0014] A feeding device, connected to the pretreatment device and the pyrolysis device, is used to transport the waste particles to the pyrolysis device.

[0015] Optionally, the separation system further includes:

[0016] A cyclone separator is connected to the pyrolysis system via a pipeline and is used to receive the high-temperature flue gas generated by the pyrolysis device. The high-temperature flue gas includes the first mixed gas and the fine particulate carbon black. The cyclone separator separates the high-temperature flue gas to separate the first mixed gas and the fine particulate carbon black.

[0017] The return feeder is connected to the cyclone separator and the pyrolysis system via a pipeline. It is used to receive the fine carbon black particles generated by the cyclone separator, screen the fine carbon black particles, transport the fine carbon black particles that meet the preset screening conditions to the pyrolysis system, and discharge the fine carbon black particles that do not meet the preset screening conditions.

[0018] The atomizing cooling tower is connected to the cyclone separator and the metal dust collector via a pipeline. It is used to receive the first mixed gas, cool the first mixed gas to generate the cooled first mixed gas, and output the cooled first mixed gas to the metal dust collector via a pipeline.

[0019] Optionally, the purification system includes:

[0020] The gas furnace is connected to the separation system and the pyrolysis system through pipelines. It receives air, natural gas and the pyrolysis gas, and combusts the air, natural gas and the pyrolysis gas together to generate high-temperature flue gas. A portion of the high-temperature flue gas is transferred to the pyrolysis system and another portion is transferred to the flue gas purification device.

[0021] A flue gas purification device is connected to the gas furnace via a pipeline to receive the high-temperature flue gas generated by the gas furnace, purify the high-temperature flue gas, and discharge it.

[0022] Optionally, the pyrolysis product separation system further includes:

[0023] A monitoring system is used to monitor sensor data of the pyrolysis system, the separation system, and the purification system; the sensor data includes at least one of temperature, pressure, and gas flow rate.

[0024] Optionally, the pyrolysis system includes:

[0025] The pretreatment device includes an inlet and an outlet; the inlet of the pretreatment device is used to receive waste raw materials; the outlet of the pretreatment device is connected to the inlet device and is used to transfer the waste particles into the inlet device.

[0026] The feeding device includes a feeding hopper and a screw feeder; the feeding hopper is connected to the pretreatment device via a pipe and is used to transport the waste particles to the screw feeder; the screw feeder is connected to the pyrolysis device via a pipe and is used to transfer the waste particles to the pyrolysis device.

[0027] The pyrolysis device includes a feed inlet, a discharge outlet, an air inlet, and an air outlet. The feed inlet is connected to the feeding device via a pipe and is used to receive the waste particles. The discharge outlet is used to discharge the coarse carbon black particles generated by the reaction. The air inlet is connected to the purification system via a pipe and is used to receive the high-temperature flue gas generated by the purification system. The air outlet is connected to the separation system via a pipe and is used to transfer the high-temperature flue gas generated by the reaction to the separation system.

[0028] Optionally, the separation system includes:

[0029] The cyclone separator includes an air inlet, an air outlet, and a discharge outlet; the air inlet of the cyclone separator is connected to the pyrolysis system via a pipe for receiving the high-temperature flue gas; the air outlet of the cyclone separator is used to transfer the first mixed gas to the atomizing cooling tower; the discharge outlet of the cyclone separator is connected to the return feeder via a pipe for transferring the separated fine carbon black particles to the return feeder.

[0030] The return feeder includes an inlet and an outlet; the inlet of the return feeder is connected to the cyclone separator via a pipe for receiving the fine carbon black particles generated in the cyclone separator; the outlet of the return feeder is connected to the pyrolysis system via a pipe for transporting the unreacted portion of the fine carbon black particles to the pyrolysis system.

[0031] The atomizing cooling tower includes an air inlet and an air outlet; the air inlet of the atomizing cooling tower is connected to the cyclone separator through a pipe for receiving the first mixed gas; the air outlet of the atomizing cooling tower is connected to the metal dust collector through a pipe for transmitting the cooled first mixed gas.

[0032] Optionally, the separation system further includes:

[0033] The metal dust collector includes an air inlet, an air outlet, and a discharge outlet; the air inlet of the metal dust collector is connected to the atomizing cooling tower via a pipe for receiving a first mixed gas; the air outlet of the metal dust collector is connected to the spray washing tower via a pipe for transmitting a second mixed gas; the discharge outlet of the metal dust collector is used to discharge the fly ash generated by the metal dust collector.

[0034] The spray washing tower includes an air inlet, an air outlet, and a discharge outlet; the air inlet of the spray washing tower is connected to the metal dust collector via a pipe for receiving the second mixed gas; the air outlet of the spray washing tower is connected to the purification system via a pipe for transmitting the pyrolysis gas generated by the spray washing tower; and the discharge outlet of the spray washing tower is used to discharge the pyrolysis oil generated by the spray washing tower.

[0035] Optionally, the purification system further includes:

[0036] The gas furnace includes a first air inlet, a second air inlet, a first air outlet, and a second air outlet; the first air inlet of the gas furnace is used to receive air; the second air inlet of the gas furnace is used to receive natural gas; the first air outlet of the gas furnace is connected to the pyrolysis system through a pipe to transfer a portion of the high-temperature flue gas; the second air outlet of the gas furnace is connected to the flue gas purification device through a pipe to transfer another portion of the high-temperature flue gas.

[0037] The flue gas purification device includes an inlet and an outlet; the inlet of the flue gas purification device is connected to the gas furnace through a pipe to receive another portion of the high-temperature flue gas; the outlet of the flue gas purification device is used to discharge the purified high-temperature flue gas.

[0038] Optionally, the preset screening conditions are that the particle size of the fine carbon black is greater than or equal to a preset particle size threshold, and / or that the density of the fine carbon black is greater than or equal to a preset density threshold.

[0039] The embodiments of this utility model have the following advantages:

[0040] This utility model provides a pyrolysis product separation system, comprising a pyrolysis system that pyrolyzes waste raw materials to generate high-temperature flue gas and coarse carbon black particles; a separation system connected to the pyrolysis system via pipelines for multi-stage separation of pyrolysis oil, pyrolysis gas, fly ash, and fine carbon black particles from the high-temperature flue gas; and a purification system connected to the separation system via pipelines for purifying the separated pyrolysis gas before discharge. The separation system includes a metal dust collector for primary separation of fly ash from a second mixed gas containing pyrolysis oil and pyrolysis gas; and a spray washing tower connected to the metal dust collector, which, by placing the cooling step of the cooling water washing at the end of the system, converts gaseous pyrolysis oil into liquid pyrolysis oil, achieving deep separation of pyrolysis oil and pyrolysis gas, and avoiding the problem of pipe and device blockage caused by condensation of pyrolysis oil at the front end of the system. This utility model achieves the separation and treatment of waste pyrolysis products through a pyrolysis system, and uses a separation system and a purification system to achieve refined separation and purification of the products, solving the problem of solid-liquid product separation and recovery in pyrolysis technology. Attached Figure Description

[0041] Figure 1 This is a structural block diagram of a pyrolysis product separation system provided in an embodiment of the present invention;

[0042] Figure 2 This is a structural block diagram of another pyrolysis product separation system provided in this embodiment of the present invention.

[0043] Explanation of reference numerals in the attached figures:

[0044] 10-Pyrolysis system, 20-Separation system, 30-Purification system, 40-Monitoring system, 101-Pretreatment device, 102-Feeding device, 103-Pyrolysis device, 201-Metal dust collector, 202-Spray washing tower, 203-Cyclone separator, 204-Return feeder, 205-Atomizing cooling tower, 301-Gas furnace, 302-Flue gas purification device, 1011-Feed silo, 1012-Screw feeder. Detailed Implementation

[0045] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] Currently, conventional pyrolysis gasification technology faces several technical challenges in the treatment of organic waste or biomass. Firstly, the liquid products generated by this technology are prone to condensation during the cooling stage, causing frequent blockages in the pipeline system and treatment equipment, severely impacting the continuity of the production process and the stability of equipment operation. Simultaneously, it is difficult to effectively separate suspended fly ash particles in the liquid medium. This solid-liquid mixture not only hinders the separate recovery of fly ash but also significantly reduces the resource utilization efficiency of by-products.

[0047] Secondly, existing technologies have significant limitations in addressing the aforementioned problems. While basic cooling devices combined with physical filtration systems are commonly used, current technologies do not fully consider the physical characteristics of the solid-liquid-gas three-phase products in the pyrolysis product processing. They typically involve simply cooling the mixed products, failing to fundamentally solve the phase change blockage problem of liquid products and hindering the efficient separation and purification of fly ash. This technological deficiency leads to high system maintenance costs and restricts the overall efficiency of waste resource recovery. Therefore, developing a novel pyrolysis gasification system with anti-condensation properties and capable of efficient solid-liquid separation is of great value in improving the reliability and resource recovery rate of organic waste treatment technologies.

[0048] One of the core concepts of this utility model embodiment is that a pyrolysis system is used to pyrolyze waste raw materials to generate high-temperature flue gas and coarse carbon black particles. A separation system is connected to the pyrolysis system via pipelines to perform multi-stage separation of pyrolysis oil, pyrolysis gas, fly ash, and fine carbon black particles in the high-temperature flue gas. A purification system is connected to the separation system via pipelines to purify the separated pyrolysis gas before discharge. The separation system includes a metal dust collector for primary separation of fly ash from a second mixed gas containing pyrolysis oil and pyrolysis gas. A spray water washing tower is connected to the metal dust collector, and by placing the cooling step of the cooling water washing at the end of the system, the gaseous pyrolysis oil is converted into liquid pyrolysis oil, achieving deep separation of pyrolysis oil and pyrolysis gas, and avoiding the problem of pipe and device blockage caused by condensation of pyrolysis oil at the front end of the system. This utility model embodiment achieves the separation and treatment of waste pyrolysis products through a pyrolysis system, and uses a separation system and a purification system to achieve fine separation and purification of the products, solving the problem of solid-liquid product separation and recovery in pyrolysis technology.

[0049] Reference Figure 1 The diagram shows a structural block diagram of a pyrolysis product separation system provided by an embodiment of the present invention, which may specifically include the following system:

[0050] The pyrolysis system 10 is used to pyrolyze waste raw materials to generate high-temperature flue gas and coarse carbon black particles;

[0051] In this embodiment of the invention, the pyrolysis system 10 is a waste material processing unit, generating high-temperature flue gas and coarse carbon black particles. By crushing waste materials, such as waste tires, they are transformed into uniform waste material particles, ensuring the sufficiency and efficiency of the pyrolysis reaction. The waste materials in this embodiment include, but are not limited to, process waste, agricultural waste, domestic waste, medical waste, and hazardous waste. For example, industrial waste may include waste tires, plastic waste, metal waste, electronic waste, and construction waste; agricultural waste may include crop straw, livestock manure, and fruit peels; and domestic waste may include household garbage, waste furniture, and waste clothing. The pyrolysis system 10 can perform a pyrolysis reaction on the raw material particles under high-temperature anaerobic or low-oxygen conditions, generating high-temperature flue gas and coarse carbon black particles. According to the process flow, the temperature of the high-temperature flue gas is generally 500-600℃, the particle size of the coarse carbon black particles is generally 50-500 micrometers, and the particle size of the raw material particles is generally less than or equal to 3 millimeters.

[0052] The efficient treatment of waste materials through the pyrolysis system 10 not only achieves the clean conversion of waste raw materials, but also successfully transforms them into high-value-added resource products, including pyrolysis oil, pyrolysis gas and carbon black.

[0053] Separation system 20, connected to the pyrolysis system, is used to receive the high-temperature flue gas output by the pyrolysis system; the high-temperature flue gas includes pyrolysis oil, pyrolysis gas, fly ash and fine particulate carbon black; the high-temperature flue gas is separated to obtain pyrolysis oil, pyrolysis gas, fly ash and fine particulate carbon black separated respectively;

[0054] In this embodiment of the invention, the separation system 20 can be connected to the pyrolysis system 10 and is a key device module for achieving refined separation of pyrolysis products. This system can efficiently separate various components in the high-temperature flue gas output from the pyrolysis system through a multi-stage separation process, ensuring the purity and utilization value of various products. The components of the high-temperature flue gas include, but are not limited to: pyrolysis oil, pyrolysis gas, fly ash, and fine carbon black particles. The fine carbon black particles range in size from 10 to 500 micrometers, and the fly ash particles are larger than 50 micrometers.

[0055] In some examples, the separation system 20, through an integrated separation unit design, not only achieves efficient separation of multiphase products but also solves the problem of cross-contamination of components in traditional separation processes. The system can employ a staged separation strategy: first, primary separation is performed on the dust-laden high-temperature flue gas to remove fly ash from the gas-oil mixture; then, deep separation is carried out on the dust-free gas-oil mixture, utilizing a combination of temperature differential condensation and hydraulic capture to achieve precise separation of pyrolysis oil and pyrolysis gas. This design significantly improves product recovery rates while avoiding oil phase adsorption losses caused by traditional electrostatic precipitators or bag filters.

[0056] In this embodiment of the invention, the separation system 20 may further include:

[0057] Metal dust collector 201 is used to separate a first mixed gas in the high-temperature flue gas, thereby separating a second mixed gas from the fly ash; the first mixed gas includes: the pyrolysis oil, the pyrolysis gas, and the fly ash; the second mixed gas includes: the pyrolysis oil and the pyrolysis gas;

[0058] In this embodiment of the present invention, the metal dust collector 201 can be used to separate the first mixed gas in the high-temperature flue gas generated by the pyrolysis system 10, to separate the mixed product of pyrolysis oil and pyrolysis gas, as well as fly ash, and to separate and collect the fly ash.

[0059] In some examples, the metal dust collector 201 is a key piece of equipment for high-temperature flue gas purification, primarily used to separate solid particulate matter generated during pyrolysis, gasification, or combustion, such as fly ash and unburned carbon particles. This equipment typically employs a composite structure combining cyclone separation and a metal filter, capable of efficiently removing particles larger than 5μm in high-temperature environments of 300-600℃, with a separation efficiency exceeding 99.5%. Its core components include a tangentially inlet cyclone separation section, a high-temperature resistant alloy filter array, an insulation layer, and an automatic dust removal system, featuring corrosion resistance, low resistance, and high efficiency.

[0060] Through multi-stage separation design, the metal dust collector can effectively reduce the dust content of flue gas to below 50mg / m3, providing a clean gas source for subsequent pyrolysis oil recovery and gas purification processes. It is an indispensable pretreatment device in the solid waste pyrolysis resource utilization system.

[0061] The spray water washing tower 202 is used to cool and wash the second mixed gas to separate the pyrolysis oil and the pyrolysis gas.

[0062] In this embodiment of the utility model, the spray water washing tower 202 can be used to wash the second mixed gas generated by the metal dust collector 201, namely the mixed product of pyrolysis oil and pyrolysis gas, and use the temperature difference to separate the pyrolysis oil and pyrolysis gas and collect the pyrolysis oil.

[0063] In some examples, the spray scrubbing tower 202 can be a highly efficient gas purification device, mainly used for cooling and purifying pyrolysis gas and recovering pyrolysis oil in pyrolysis gasification systems. This device uses an atomized spray system to evenly distribute cooling water, allowing high-temperature gas to undergo gradient cooling within the tower, achieving condensation and recovery of pyrolysis oil vapor and preliminary purification of combustible gases. Its core structure includes a corrosion-resistant packing layer, anti-clogging atomizing nozzles, and an oil-water separation device, featuring high pyrolysis oil recovery rate and good anti-clogging performance.

[0064] The spray water scrubbing tower can effectively remove tar, dust and some acidic substances from the gas. The dust content of the treated gas creates favorable conditions for subsequent deep purification processes, making it a key piece of equipment in the pyrolysis gas purification system.

[0065] Purification system 30, connected to the separation system, is used to receive the pyrolysis gas output by the separation system, purify the pyrolysis gas and discharge it;

[0066] In this embodiment of the invention, the purification system 30 can be connected to the separation system to receive the pyrolysis gas generated in the separation system and discharge it after purifying the pyrolysis gas to meet a preset standard.

[0067] In some examples, the purification system 30, as a downstream processing unit of the separation system, is a core device ensuring the clean utilization of pyrolysis gas. This system can deeply treat the pyrolysis gas through multi-stage purification processes, bringing it up to industrial gas standards. Specifically, the purification system 30 can effectively remove substances such as hydrogen sulfide, organic sulfides, and dust from the pyrolysis gas. The treated pyrolysis gas can be directly used for gas turbine power generation or as a chemical feedstock.

[0068] This invention utilizes a pyrolysis system to pyrolyze waste materials, generating high-temperature flue gas and coarse-grained carbon black. A separation system connected to the pyrolysis system via pipelines separates the pyrolysis oil, pyrolysis gas, fly ash, and fine-grained carbon black from the high-temperature flue gas in multiple stages. A purification system connected to the separation system via pipelines purifies the separated pyrolysis gas before discharge. The separation system includes a metal dust collector for primary separation of fly ash from a second mixed gas containing pyrolysis oil and pyrolysis gas. A spray washing tower connected to the metal dust collector, by placing the cooling step of the cooling water washing at the end of the system, converts the gaseous pyrolysis oil into liquid pyrolysis oil, achieving deep separation of pyrolysis oil and pyrolysis gas, and avoiding the problem of pipe and device blockage caused by condensation of pyrolysis oil at the front end of the system. This invention achieves the separation and treatment of waste pyrolysis products through a pyrolysis system, and uses a separation system and a purification system to achieve refined separation and purification of the products, solving the problem of solid-liquid product separation and recovery in pyrolysis technology.

[0069] Reference Figure 2 The diagram shows a structural block diagram of another pyrolysis product separation system provided by an embodiment of the present invention, which may specifically include the following system:

[0070] The pyrolysis system 10 is used to pyrolyze waste raw materials to generate high-temperature flue gas and coarse carbon black particles;

[0071] In this embodiment of the invention, the pyrolysis system 10 is a waste material processing unit that generates high-temperature flue gas and coarse carbon black particles.

[0072] In some examples, a pyrolysis system may include the following:

[0073] Pretreatment device 101 is used to pretreat waste raw materials to generate waste particles;

[0074] In this embodiment of the invention, the pretreatment device can pretreat the waste raw materials to generate waste particles for subsequent processing.

[0075] In some examples, the pretreatment device may include an inlet and an outlet; wherein the inlet of the pretreatment device is used to receive waste raw materials; and the outlet of the pretreatment device is connected to the inlet for transferring waste particles into the inlet.

[0076] In some examples, the pretreatment device crushes the waste tires to ensure that the particle size of the raw material is less than or equal to 3 mm.

[0077] The pretreatment device 101 crushes the waste raw materials into particles using equipment such as crushers, which significantly improves the homogeneity of the raw materials, ensures the sufficiency and stability of the subsequent pyrolysis reaction, optimizes the pyrolysis heat transfer efficiency, and avoids equipment blockage caused by large pieces of material, thus providing a basic guarantee for the efficient operation of the entire waste resource utilization system.

[0078] The feeding device 102 is connected to the pretreatment device and the pyrolysis device and is used to transport the waste particles to the pyrolysis device.

[0079] In this embodiment of the present invention, the feeding device 102 can be connected to the pretreatment device through a pipeline for transporting raw material particles from the pretreatment device 101 to the pyrolysis device.

[0080] In some examples, the feeding device 102 may include a feeding hopper 1011 and a screw feeder 1012. The feeding hopper 1011 may be connected to the pretreatment device 101 via a pipe for conveying waste particles to the screw feeder; the screw feeder 1012 may be connected to the feeding hopper 1011 via a pipe and is placed below the feeding hopper 1011 for transporting waste particles to the pyrolysis device.

[0081] The feeding device connects the pretreatment unit and the pyrolysis unit via pipelines, employing a combination structure of a feeding hopper and a screw feeder to achieve efficient and sealed transport of waste particles. This design effectively prevents material leakage and blockage, ensuring continuous and stable conveying of raw materials from pretreatment to pyrolysis. Simultaneously, the precise feeding function of the screw feeder improves pyrolysis efficiency. The overall structure is simple and practical, significantly optimizing the operational reliability of the waste treatment system.

[0082] The pyrolysis device 103 is used to pyrolyze the waste particles to generate the high-temperature flue gas and coarse carbon black particles.

[0083] In this embodiment of the invention, the pyrolysis device 103 can be used to pyrolyze waste particles to generate high-temperature flue gas and coarse carbon black particles.

[0084] In some examples, the pyrolysis device 103 may include a feed inlet, a discharge outlet, an air inlet, and an air outlet; the feed inlet of the pyrolysis device may be connected to a feeding device via a pipe for receiving waste particles; the discharge outlet of the pyrolysis device may be used to discharge coarse particulate carbon black generated by the reaction; the air inlet of the pyrolysis device may be connected to a purification system via a pipe for receiving high-temperature flue gas generated by the purification system; and the air outlet of the pyrolysis device may be connected to a separation system via a pipe for transferring the high-temperature flue gas generated by the reaction to the separation system.

[0085] In some examples, the waste tire particles, after being crushed in the pretreatment process, are fed into a fluidized bed pyrolysis furnace through a feeding device. They come into contact with the high-temperature flue gas from the bottom of the pyrolysis furnace and undergo a thermal cracking reaction. The large carbon black particles generated by the reaction are collected after being discharged from the bottom of the fluidized bed.

[0086] In some examples, the pyrolysis device 103 can be a fluidized bed pyrolysis furnace. Depending on the process requirements, the waste particles can stay in the furnace of the fluidized bed pyrolysis furnace for 30 to 60 minutes. The furnace operating temperature is 500 to 600 degrees Celsius, and the operating pressure is 8-15 kPa.

[0087] The pyrolysis unit significantly improves pyrolysis efficiency and product purity by ensuring full contact between waste materials and high-temperature flue gas. At the same time, the modular interface design enhances system synergy, providing a stable and reliable process foundation for subsequent carbon black collection and flue gas treatment.

[0088] Separation system 20, connected to the pyrolysis system, is used to receive the high-temperature flue gas output by the pyrolysis system; the high-temperature flue gas includes pyrolysis oil, pyrolysis gas, fly ash and fine particulate carbon black; the high-temperature flue gas is separated to obtain pyrolysis oil, pyrolysis gas, fly ash and fine particulate carbon black separated respectively;

[0089] In this embodiment of the invention, the separation system can be connected to the pyrolysis system via a pipeline to receive the high-temperature flue gas generated by the pyrolysis system. The high-temperature flue gas includes pyrolysis oil, pyrolysis gas, fly ash, and fine particulate carbon black. The separation system can decompose the high-temperature flue gas, separating the pyrolysis oil, pyrolysis gas, fly ash, and fine particulate carbon black into their respective components.

[0090] In some examples, the separation system 20 may include the following:

[0091] Metal dust collector 201 is used to separate a first mixed gas in the high-temperature flue gas, thereby separating a second mixed gas from the fly ash; the first mixed gas includes: the pyrolysis oil, the pyrolysis gas, and the fly ash; the second mixed gas includes: the pyrolysis oil and the pyrolysis gas;

[0092] In this embodiment of the invention, the metal dust collector can separate the first mixed gas in the high-temperature flue gas, so that the second mixed gas is separated from the fly ash.

[0093] In some examples, the metal dust collector includes an inlet, an outlet, and a discharge port; the inlet of the metal dust collector is connected to an atomizing cooling tower via a pipe to receive a first mixed gas; the outlet of the metal dust collector is connected to a spray washing tower via a pipe to transfer a second mixed gas; and the discharge port of the metal dust collector is used to discharge the fly ash generated by the metal dust collector.

[0094] In some examples, metal dust collectors can significantly improve the quality indicators of liquid products through innovative multi-stage composite filtration systems. For instance, this device employs a three-stage purification technology of "electrostatic dust removal + metal filter + ceramic membrane," which can efficiently intercept micron-sized metal particles and fly ash impurities in high-temperature flue gas. This deep purification process ensures that the ash content of the pyrolysis oil in the subsequent condensation system is reduced, the sulfur content is controlled below 50 ppm, and the calorific value can be increased to meet the national standard for Class II fuel oil. Furthermore, the specially designed self-cleaning filter structure and intelligent backflushing system ensure continuous and stable operation while maintaining filtration accuracy, avoiding the clogging problems common in traditional dust collection equipment.

[0095] Metal dust collectors significantly improve the purity and quality of liquid products by efficiently capturing fly ash. This device employs multi-stage filtration technology to effectively intercept metal particles and fly ash impurities in high-temperature flue gas, preventing these impurities from entering the subsequent condensation system and contaminating the pyrolysis oil. This results in the final liquid products, such as pyrolysis oil, having lower ash content and higher calorific value.

[0096] The spray water washing tower 202 is used to cool and wash the second mixed gas to separate the pyrolysis oil and the pyrolysis gas.

[0097] In this embodiment of the invention, the spray washing tower can be used to cool and wash the second mixed gas, thereby separating the pyrolysis oil and pyrolysis gas therein.

[0098] In some examples, the spray washing tower may include an air inlet, an air outlet, and a discharge outlet; the inlet of the spray washing tower; the air outlet of the spray washing tower is connected to the purification system via a pipeline for transmitting gas; the air outlet is connected to a metal dust collector via a pipeline for receiving the pyrolysis gas generated by the second mixed gas spray washing tower; and the discharge outlet of the spray washing tower is used to discharge the pyrolysis oil generated by the spray washing tower.

[0099] In some examples, the spray washing tower can precisely control the temperature and flow rate of the spray water to cool and wash the second mixed gas after the metal dust collector has been filtered, thereby separating the pyrolysis oil and pyrolysis gas and collecting high-quality pyrolysis oil without pollution.

[0100] The spray washing tower significantly improves the separation purity and recovery efficiency of pyrolysis products through a highly efficient cooling and washing process, ensuring that the pyrolysis oil products are free from secondary pollution and can be directly used as high-quality fuels or chemical raw materials.

[0101] Cyclone separator 203 is connected to the pyrolysis system via a pipeline and is used to receive the high-temperature flue gas generated by the pyrolysis device. The high-temperature flue gas includes the first mixed gas and the fine particulate carbon black. It separates the high-temperature flue gas to separate the first mixed gas and the fine particulate carbon black.

[0102] In some examples, the cyclone separator 203 may include an inlet, an outlet, and a discharge outlet; the inlet of the cyclone separator is connected to the pyrolysis system via a pipe for receiving high-temperature flue gas; the outlet of the cyclone separator is used to transfer the first mixed gas to the atomizing cooling tower; the discharge outlet of the cyclone separator is connected to a return feeder via a pipe for transferring the separated fine carbon black particles to the return feeder; the first mixed gas includes pyrolysis oil, pyrolysis gas, and fly ash.

[0103] In some examples, the high-temperature flue gas containing a large amount of material generated by the pyrolysis system 10 enters the cyclone separator 203 through the top of the pyrolysis unit. Fine carbon black particles and unreacted particles are separated by the separator and enter the return feeder through the lower part of the cyclone separator. The mixed gas consisting of pyrolysis oil, pyrolysis gas and fly ash enters the atomizing cooling tower through the upper outlet. The return feeder returns the unreacted particles to the pyrolysis furnace for re-pyrolysis reaction, and the fully reacted fine carbon black particles are discharged through the outlet at the bottom of the return feeder.

[0104] Cyclone separators significantly improve carbon black recovery rate and gas purification effect through efficient gas-solid separation, effectively reducing energy consumption while avoiding material waste, and significantly improving the overall process continuity and resource utilization.

[0105] The return feeder 204 is connected to the cyclone separator and the pyrolysis system via a pipeline. It is used to receive the fine carbon black particles generated by the cyclone separator, screen the fine carbon black particles, transport the fine carbon black particles that meet the preset screening conditions to the pyrolysis system, and discharge the fine carbon black particles that do not meet the preset screening conditions.

[0106] In this embodiment of the utility model, the return feeder 204 can be connected to the pyrolysis system via pipes and cyclone separators respectively, to receive fine carbon black particles generated by the cyclone separators, screen the fine carbon black particles, and then transport the fine carbon black particles that meet the preset screening conditions to the pyrolysis system to allow them to react fully, while the remaining fine carbon black particles that do not meet the conditions can be discharged.

[0107] In some examples, the return feeder may include an inlet and an outlet; the inlet of the return feeder is connected to a cyclone separator via a pipe to receive fine carbon black particles generated in the cyclone separator; the outlet of the return feeder is connected to a pyrolysis system via a pipe to transport the unreacted portion of the fine carbon black particles to the pyrolysis system.

[0108] In some examples, the preset screening conditions are that the particle size of the fine carbon black is greater than or equal to a preset particle size threshold, and / or that the density of the fine carbon black is greater than or equal to a preset density threshold. For example, when the preset screening condition is that the particle size of the fine carbon black is greater than or equal to the preset particle size threshold, the fine carbon black that meets the preset screening condition is an incompletely reacted raw material particle that can be returned to the pyrolysis system for re-pyrolysis reaction.

[0109] The return feeder uses a screening mechanism to precisely sort fine carbon black particles: larger or denser particles that have not fully reacted are automatically returned to the pyrolysis system through the outlet for secondary pyrolysis to ensure complete reaction; while qualified carbon black is directly discharged and collected. This ensures the uniformity of the final carbon black product, achieves linkage with upstream and downstream equipment, and makes the entire pyrolysis process a highly efficient and energy-saving circular production system.

[0110] The atomizing cooling tower 205 is connected to the cyclone separator and the metal dust collector through a pipeline. It is used to receive the first mixed gas, cool the first mixed gas to generate the cooled first mixed gas, and output the cooled first mixed gas to the metal dust collector through a pipeline.

[0111] In this embodiment of the invention, the atomizing cooling tower can be connected to the metal dust collector via pipes and cyclone separators to receive the first mixed gas, and after cooling the first mixed gas, it is output to the metal dust collector.

[0112] In some examples, the atomizing cooling tower includes an inlet and an outlet; the inlet of the atomizing cooling tower is connected to the cyclone separator via a pipe for receiving the first mixed gas; the outlet of the atomizing cooling tower is connected to the metal dust collector via a pipe for transmitting the cooled first mixed gas.

[0113] Atomizing cooling towers can pre-cool mixed gases to prevent high-temperature mixtures from damaging downstream equipment. For example, if the temperature of the first mixed gas is around 500℃, while in a metal dust collector, a gas temperature exceeding 400℃ can damage the equipment, then after atomizing cooling, the mixed gas temperature is reduced to 350-400℃. This prevents the mixed gas temperature from being too high and damaging the downstream metal dust collector, while also preventing it from condensing into pyrolysis oil due to excessively low temperature.

[0114] Purification system 30, connected to the separation system, is used to receive the pyrolysis gas output by the separation system, purify the pyrolysis gas, and discharge it.

[0115] In this embodiment of the invention, the purification system can be connected to the separation system via a pipeline to receive the pyrolysis gas output from the separation system and to purify the pyrolysis gas before discharging it.

[0116] The gas furnace 301 is connected to the separation system and the pyrolysis system through a pipeline. It receives air, natural gas and the pyrolysis gas, and combusts the air, natural gas and the pyrolysis gas together to generate high-temperature flue gas. A portion of the high-temperature flue gas is transferred to the pyrolysis system and another portion is transferred to the flue gas purification device.

[0117] In some examples, the gas furnace may include a first air inlet, a second air inlet, a first air outlet, and a second air outlet; the first air inlet of the gas furnace is used to receive air; the second air inlet of the gas furnace is used to receive natural gas; the first air outlet of the gas furnace is connected to a pyrolysis system via a pipe to transfer a portion of the high-temperature flue gas; and the second air outlet of the gas furnace is connected to a flue gas purification device via a pipe to transfer another portion of the high-temperature flue gas.

[0118] The purification system achieves efficient utilization and energy recycling of pyrolysis gas through a co-combustion design with a gas furnace. The system mixes and combusts the pyrolysis gas output from the separation system with air and natural gas within the gas furnace, producing high-temperature flue gas. Through a preset distribution ratio, for example, approximately 70% of the high-temperature flue gas is delivered to the pyrolysis system as a heat source through the first outlet, significantly reducing external energy consumption; the remaining 30% of the flue gas enters the flue gas purification device through the second outlet to meet emission standards.

[0119] The flue gas purification device 302 is connected to the gas furnace via a pipeline, and is used to receive the high-temperature flue gas generated by the gas furnace, purify the high-temperature flue gas, and discharge it.

[0120] In this embodiment of the invention, the flue gas purification device can be connected to a gas furnace via a pipeline to purify the remaining high-temperature flue gas and discharge it after it meets the emission standards.

[0121] In some examples, the flue gas purification device may include an inlet and an outlet; the inlet of the flue gas purification device is connected to the gas furnace via a pipe to receive another portion of high-temperature flue gas; the outlet of the flue gas purification device is used to discharge the purified high-temperature flue gas. The flue gas purification device achieves environmentally compliant emissions of high-temperature flue gas.

[0122] The monitoring system 40 is used to monitor sensor data of the pyrolysis system, the separation system and the purification system; the sensor data includes at least one of temperature, pressure and gas flow rate.

[0123] In this embodiment of the invention, the monitoring system can be used to detect sensor data from the pyrolysis system, the separation system, and the purification system. The sensor data may include one of temperature, pressure, and gas flow rate.

[0124] In some examples, the monitoring system may include temperature sensors, pressure sensors, and gas flow sensors, which can be installed throughout the piping of the system to monitor temperature, pressure, and flow at various points in real time, preventing deviations during the reaction process.

[0125] This utility model embodiment utilizes a pyrolysis system to pyrolyze waste raw materials to generate high-temperature flue gas and coarse carbon black particles; a separation system connected to the pyrolysis system via pipelines to receive the high-temperature flue gas output from the pyrolysis system, which contains pyrolysis oil, pyrolysis gas, fly ash, and fine carbon black particles, and performs multi-stage separation processing; and a purification system connected to the separation system to purify the separated pyrolysis gas before discharge. The separation system includes: a cyclone separator for primary separation of the first mixed gas and fine carbon black particles in the high-temperature flue gas; an atomizing cooling tower for cooling the first mixed gas; a metal dust collector for secondary separation of fly ash and a second mixed gas; and a spray washing tower, which, by placing the cooling step of the cooling water washing at the end of the system, converts the gaseous pyrolysis oil into liquid pyrolysis oil, achieving deep separation of pyrolysis oil and pyrolysis gas, and avoiding the problem of pipe and device blockage caused by condensation of pyrolysis oil at the front end of the system. This utility model embodiment realizes the generation of waste pyrolysis products through a pyrolysis system, and uses a multi-stage separation system and purification system to realize the fine separation and purification of products, thus solving the problem of efficient separation and recovery of solid, liquid and gas three-phase products in pyrolysis technology.

[0126] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0127] Furthermore, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0128] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0129] Finally, it should be noted that in this document, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0130] The above provides a detailed description of the pyrolysis energy utilization system provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A pyrolysis product separation system characterized by, include: The pyrolysis system is used to pyrolyze waste raw materials to generate high-temperature flue gas and coarse carbon black particles; A separation system, connected to the pyrolysis system, is used to receive the high-temperature flue gas output by the pyrolysis system; the high-temperature flue gas includes pyrolysis oil, pyrolysis gas, fly ash, and fine particulate carbon black; the high-temperature flue gas is subjected to separation treatment to obtain pyrolysis oil, pyrolysis gas, fly ash, and fine particulate carbon black that are separated individually; A purification system, connected to the separation system, is used to receive the pyrolysis gas output by the separation system, purify the pyrolysis gas, and discharge it. The separation system includes: A metal dust collector is used to separate a first mixed gas in the high-temperature flue gas, thereby separating a second mixed gas from the fly ash; the first mixed gas includes: the pyrolysis oil, the pyrolysis gas, and the fly ash; the second mixed gas includes: the pyrolysis oil and the pyrolysis gas; A spray water washing tower is used to cool and wash the second mixed gas to separate the pyrolysis oil and the pyrolysis gas.

2. The system of claim 1, wherein, The pyrolysis system includes: A pretreatment device is used to pretreat waste raw materials to generate waste pellets; A pyrolysis device is used to pyrolyze the waste particles to generate the high-temperature flue gas and coarse carbon black particles; A feeding device, connected to the pretreatment device and the pyrolysis device, is used to transport the waste particles to the pyrolysis device.

3. The system according to claim 1, characterized in that, The separation system also includes: A cyclone separator is connected to the pyrolysis system via a pipeline and is used to receive the high-temperature flue gas generated by the pyrolysis device. The high-temperature flue gas includes the first mixed gas and the fine particulate carbon black. The cyclone separator separates the high-temperature flue gas to separate the first mixed gas and the fine particulate carbon black. The return feeder is connected to the cyclone separator and the pyrolysis system via a pipeline. It is used to receive the fine carbon black particles generated by the cyclone separator, screen the fine carbon black particles, transport the fine carbon black particles that meet the preset screening conditions to the pyrolysis system, and discharge the fine carbon black particles that do not meet the preset screening conditions. The atomizing cooling tower is connected to the cyclone separator and the metal dust collector via a pipeline. It is used to receive the first mixed gas, cool the first mixed gas to generate the cooled first mixed gas, and output the cooled first mixed gas to the metal dust collector via a pipeline.

4. The system of claim 1, wherein, The purification system includes: The gas furnace is connected to the separation system and the pyrolysis system through pipelines. It receives air, natural gas and the pyrolysis gas, and combusts the air, natural gas and the pyrolysis gas together to generate high-temperature flue gas. A portion of the high-temperature flue gas is transferred to the pyrolysis system and another portion is transferred to the flue gas purification device. A flue gas purification device is connected to the gas furnace via a pipeline to receive the high-temperature flue gas generated by the gas furnace, purify the high-temperature flue gas, and discharge it.

5. The system of claim 1, wherein, Also includes: A monitoring system is used to monitor sensor data of the pyrolysis system, the separation system, and the purification system; the sensor data includes at least one of temperature, pressure, and gas flow rate.

6. The system of claim 2, wherein, The pyrolysis system includes: The pretreatment device includes an inlet and an outlet; the inlet of the pretreatment device is used to receive waste raw materials; the outlet of the pretreatment device is connected to the inlet device and is used to transfer the waste particles into the inlet device. The feeding device includes a feeding hopper and a screw feeder; the feeding hopper is connected to the pretreatment device via a pipe and is used to transport the waste particles to the screw feeder; the screw feeder is connected to the pyrolysis device via a pipe and is used to transfer the waste particles to the pyrolysis device. The pyrolysis device includes a feed inlet, a discharge outlet, an air inlet, and an air outlet. The feed inlet is connected to the feeding device via a pipe and is used to receive the waste particles. The discharge outlet is used to discharge the coarse carbon black particles generated by the reaction. The air inlet is connected to the purification system via a pipe and is used to receive the high-temperature flue gas generated by the purification system. The air outlet is connected to the separation system via a pipe and is used to transfer the high-temperature flue gas generated by the reaction to the separation system.

7. The system of claim 3, wherein, The separation system includes: The cyclone separator includes an air inlet, an air outlet, and a discharge outlet; the air inlet of the cyclone separator is connected to the pyrolysis system via a pipe for receiving the high-temperature flue gas; the air outlet of the cyclone separator is used to transfer the first mixed gas to the atomizing cooling tower; the discharge outlet of the cyclone separator is connected to the return feeder via a pipe for transferring the separated fine carbon black particles to the return feeder. The return feeder includes an inlet and an outlet; the inlet of the return feeder is connected to the cyclone separator via a pipe for receiving the fine carbon black particles generated in the cyclone separator; the outlet of the return feeder is connected to the pyrolysis system via a pipe for transporting the unreacted portion of the fine carbon black particles to the pyrolysis system. The atomizing cooling tower includes an air inlet and an air outlet; the air inlet of the atomizing cooling tower is connected to the cyclone separator through a pipe for receiving the first mixed gas; the air outlet of the atomizing cooling tower is connected to the metal dust collector through a pipe for transmitting the cooled first mixed gas.

8. The system of claim 7, wherein, The separation system also includes: The metal dust collector includes an air inlet, an air outlet, and a discharge outlet; the air inlet of the metal dust collector is connected to the atomizing cooling tower via a pipe for receiving a first mixed gas; the air outlet of the metal dust collector is connected to the spray washing tower via a pipe for transmitting a second mixed gas; the discharge outlet of the metal dust collector is used to discharge the fly ash generated by the metal dust collector. The spray washing tower includes an air inlet, an air outlet, and a discharge outlet; the air inlet of the spray washing tower is connected to the metal dust collector via a pipe for receiving the second mixed gas; the air outlet of the spray washing tower is connected to the purification system via a pipe for transmitting the pyrolysis gas generated by the spray washing tower; and the discharge outlet of the spray washing tower is used to discharge the pyrolysis oil generated by the spray washing tower.

9. The system of claim 4, wherein, The purification system also includes: The gas furnace includes a first air inlet, a second air inlet, a first air outlet, and a second air outlet; the first air inlet of the gas furnace is used to receive air; the second air inlet of the gas furnace is used to receive natural gas; the first air outlet of the gas furnace is connected to the pyrolysis system through a pipe to transfer a portion of the high-temperature flue gas; the second air outlet of the gas furnace is connected to the flue gas purification device through a pipe to transfer another portion of the high-temperature flue gas. The flue gas purification device includes an inlet and an outlet; the inlet of the flue gas purification device is connected to the gas furnace through a pipe to receive another portion of the high-temperature flue gas; the outlet of the flue gas purification device is used to discharge the purified high-temperature flue gas.

10. The system of claim 3, wherein, The preset screening conditions are that the particle size of the fine carbon black is greater than or equal to a preset particle size threshold, and / or that the density of the fine carbon black is greater than or equal to a preset density threshold.

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