Carbon residue and waste tire colloidal particle co-pyrolysis high-value resource utilization system and method

Abstract

The invention discloses a co-pyrolysis high-value resource utilization system for carbon residues and waste tire colloidal particles. Comprising a carbon residue / colloidal particle receiving and mixing module, a material lifting and conveying module, a material temporary storage bin, a carbon residue / colloidal particle co-pyrolysis upgrading module, a pyrolytic oil condensation and separation module, a non-condensable gas pressure-stabilizing gas storage cabinet, a carbon black cooling temporary storage bin, a carbon black high-valued processing module, high-quality carbon black particles, a flue gas purification module and a measurement and prediction control module. By collecting and analyzing signals, the mixing proportion of the carbon residues and the colloidal particles is automatically controlled, and automatic transportation of mixed materials is controlled; the invention further discloses a method for co-pyrolysis high-value resource utilization of the carbon residues and the waste tire colloidal particles. According to the invention, automatic calculation and automatic adjustment of partial modules of the system can be carried out through feedback of each signal, human input and labor intensity can be reduced, labor cost can be reduced, and continuous production and all-weather operation can be realized.

Description

Technical Field

[0001] The invention belongs to the field of harmless treatment and resource utilization of solid waste, and in particular relates to a system and method for high-value resource utilization of carbon residue and waste tire rubber particles through co-pyrolysis. Background Art

[0002] Common ways to recycle waste tires include: direct refurbishment, production of recycled rubber powder, direct incineration, pyrolysis, etc. Pyrolysis is the most effective and thorough way to treat waste tires. Pyrolysis of waste tires solves the dangers and hazards caused by the accumulation of waste tires. After pyrolysis, waste tires can be recycled into combustible gas, oil products and pyrolysis carbon black, which is the key product of tire pyrolysis.

[0003] With the continuous updating of waste tire pyrolysis refining technology, the waste tire pyrolysis equipment on the market is currently divided into intermittent pyrolysis equipment and continuous pyrolysis equipment. Compared with continuous pyrolysis equipment, intermittent pyrolysis equipment has problems such as frequent heating, cooling, slagging, and reloading, invalid time periods and fuel waste. However, due to its lower investment cost, intermittent pyrolysis equipment has a wider coverage in the market.

[0004] However, due to the frequent start and stop of intermittent pyrolysis equipment, and the lack of obvious separation channels between pyrolysis oil and carbon black, it is difficult to accurately control the pyrolysis temperature, resulting in the high oil content and unstable performance of the pyrolysis carbon black produced by the equipment, which is generally treated and disposed of as carbon slag. Carbon black with a high oil content cannot be widely used as a high value-added product in the fields of rubber, plastics, coatings, inks, etc. Since the calorific value of carbon slag is equivalent to that of coal, most carbon slag is made into spherical carbon black, or made into carbon black briquettes with coal for heating and combustion, so the price is relatively low. How to recycle carbon slag with a high oil content, improve its quality and performance stability, and achieve high-value utilization is an urgent problem that needs to be solved. Summary of the invention

[0005] The present invention provides a high-value resource utilization system and method for co-pyrolysis of carbon residue and waste tire rubber particles, which realizes the co-enhanced pyrolysis of carbon residue and rubber particles, improves the added value of the products, and increases the adaptive adjustment capability of the system by setting a measurement and prediction control module.

[0006] A high-value resource utilization system for co-pyrolysis of carbon residue and waste tire rubber particles, comprising:

[0007] The carbon slag / colloid pellet receiving and mixing module is used to mix carbon slag and colloidal pellets. The mixing ratio between carbon slag and colloidal pellets can be adjusted according to different needs. The unique design between the mixing modules is used to ensure that the carbon slag and colloidal pellets are mixed evenly. The obtained mixed material is sent to the material buffer silo through the material lifting and conveying module;

[0008] Material lifting and conveying module, used to convey mixed materials;

[0009] The material buffer silo is used to store the mixed material conveyed by the material lifting and conveying module, and a mixed material weight sensor is installed in the material buffer silo;

[0010] The carbon slag / colloid particle co-pyrolysis quality improvement module uses heat source to co-pyrolyze carbon slag and colloid particles, with a pyrolysis efficiency of 99%. The generated pyrolysis oil and gas are sent to the pyrolysis oil condensation separation module; the generated crude carbon black is sent to the carbon black cooling buffer bin;

[0011] The pyrolysis oil condensation and separation module is used to condense the pyrolysis oil and gas produced by the carbon slag / colloid particle co-pyrolysis and quality improvement module, and separate it into pyrolysis oil and non-condensable gas. The non-condensable gas is sent to the non-condensable gas pressure-stabilizing gas storage cabinet, and the pyrolysis oil condensation and separation module is equipped with a pyrolysis oil liquid level sensor;

[0012] A non-condensable gas pressure-stabilizing gas storage tank is used to store the non-condensable gas separated by the pyrolysis oil condensation separation module, and the non-condensable gas pressure-stabilizing gas storage tank is equipped with a pyrolysis gas volume sensor;

[0013] Carbon black cooling and buffering bin, used to store the crude carbon black produced by the carbon slag / colloid particle co-pyrolysis and upgrading module;

[0014] The carbon black high-value processing module is used to process the crude carbon black produced by the carbon slag / colloid particle co-pyrolysis and quality improvement module to produce higher quality carbon black particles;

[0015] High-quality carbon black is the carbon black particles produced after being processed by the carbon black high-value processing module;

[0016] The flue gas purification module uses low-temperature SCR and wet desulfurization technology to remove nitrogen and sulfur pollutants from the flue gas generated after the pyrolysis oil and pyrolysis gas are burned by the burner, and the clean flue gas is discharged into the atmosphere;

[0017] The measurement and prediction control module obtains the pyrolysis oil of the pyrolysis oil condensation and separation module through the pyrolysis oil level sensor and the non-condensable gas reserves in the non-condensable gas pressure-stabilizing gas storage cabinet through the pyrolysis gas volume sensor, and obtains the material quantity in the material buffer silo through the mixed material weight sensor, automatically calculates the mixing ratio of carbon slag and colloid particles, controls the carbon slag / colloid particle receiving mixing module to adjust the mixing ratio of carbon slag and colloid particles, and automatically replenishes the mixed material into the material buffer silo through the material lifting module.

[0018] In order to ensure the mixing effect of carbon slag and rubber particles, and to prevent obvious stratification of carbon slag and rubber particles due to density difference after mixing, preferably, the coaxial bidirectional screw device is controlled by the same motor, and the screw blades on both sides of the material partition have different directions, so as to control the transportation of carbon slag and rubber particles to both sides and mix them after passing through the guide bin.

[0019] In order to further improve the mixing effect of carbon slag and colloid particles, preferably, a collision column is provided under the guide bin, and the extension line of the guide bin inclined plate coincides with the top of the collision column. The carbon slag and colloid particles falling from both sides of the coaxial bidirectional spiral device collide with the collision column under the guidance of the guide bin. Finally, the carbon slag / colloid particles are dispersed after colliding with the collision column, which can ensure better mixing uniformity between the carbon slag and the colloid particles.

[0020] In order to further improve the pyrolysis efficiency of carbon slag and colloid particles, preferably, a plurality of material paddles are provided between the spiral blades of the homogenizing pyrolysis spiral to mix the colloid particles evenly, increase the heat exchange temperature difference, and enhance the heat transfer.

[0021] Generally speaking, carbon slag and colloid particles have different thermal conductivities. By mixing carbon slag and colloid particles, the pyrolysis efficiency of the mixture of carbon slag and colloid particles can be improved. By arranging the material paddles in the homogeneous pyrolysis spiral, the mixing of carbon slag and colloid particles can be made more uniform. By utilizing the arrangement of the material paddles, the filling rate of the mixed material in the homogeneous pyrolysis spiral can be made higher, thereby improving the utilization rate of the homogeneous pyrolysis spiral.

[0022] In order to further improve the pyrolysis efficiency of carbon residue and colloid particles, the setting temperature of the high-temperature upgrading spiral is preferably higher than the setting temperature of the homogeneous pyrolysis spiral, so as to continue to pyrolyze the mixed material discharged from the homogeneous pyrolysis spiral and improve the quality of pyrolytic carbon black. The pyrolysis material produced from the homogeneous pyrolysis spiral has a transmittance of more than 90% of the toluene extract of the crude carbon black produced under the action of the high-temperature upgrading spiral.

[0023] In order to achieve the regulation of pyrolysis non-condensable gas, preferably, the non-condensable gas pressure-stabilizing gas storage cabinet adopts a floating plate design. The floating plate on the non-condensable gas pressure-stabilizing gas storage cabinet will move up and down with the change of the non-condensable gas amount therein. Through the design of the floating plate, the change of the non-condensable gas reserves can be measured more accurately.

[0024] In order to realize the high-value resource utilization of pyrolytic carbon black, it is preferred to add a carbon black high-value processing module in the system. By grinding, granulating and drying the pyrolytic carbon black, the quality of the pyrolytic carbon black is improved, and high-quality carbon black particles are produced.

[0025] In order to achieve standard emission of pyrolysis high-temperature flue gas, preferably, the flue gas purification system removes pollutants such as NOx, SO2 and particulate matter in the tail gas through low-temperature SCR and wet desulfurization technology.

[0026] In order to achieve the regulation of the mixing ratio of carbon slag and rubber particles, preferably, an electric regulating valve is provided on the side of the material buffer silo for storing carbon slag. Through the measurement and prediction control module, the electric regulating valve is automatically adjusted according to the measured changes of the pyrolysis gas volume sensor and the pyrolysis oil level sensor, and the coaxial bidirectional spiral device is started, so as to automatically adjust the mixing ratio of carbon slag and rubber particles.

[0027] Since carbon slag is the product of intermittent pyrolysis equipment, although the oil content in the carbon slag is still high, resulting in poor quality, the pyrolysis oil and gas produced after its re-pyrolysis only accounts for 3% to 5% of the total mass, while the pyrolysis oil and gas produced by the pyrolysis of waste tires accounts for about 60% of the mass. Therefore, when the pyrolysis equipment only pyrolyzes the carbon slag, the pyrolysis oil and gas it produces is not enough to provide heat for the equipment, and when the waste tires are completely pyrolyzed, the pyrolysis oil and gas it produces cannot be completely consumed. Therefore, the adjustable ratio of carbon slag / colloid particle co-pyrolysis design can realize the continuous resource utilization of carbon slag, and solve the problems of invalid time periods and fuel waste caused by frequent heating, cooling, slag discharge, and reloading in intermittent pyrolysis equipment.

[0028] Further preferably, in order to improve the automation level of continuous pyrolysis mixing ratio adjustment of carbon slag and colloid particles, the measurement prediction control module includes a mixed material weight sensor, a pyrolysis oil level sensor, a pyrolysis gas volume sensor, an electric gate valve adjustment signal and a coaxial reverse spiral start signal. Among them, the measurement prediction control module can obtain the signals of the pyrolysis oil level sensor and the pyrolysis gas volume sensor to obtain the current amount of pyrolysis oil and pyrolysis gas, calculate the time that can continue to provide combustion, and control the electric gate valve adjustment signal to adjust the opening of the electric gate valve, and finally achieve the purpose of controlling the mixing ratio of carbon slag and colloid particles. Through the above adjustment, after multiple iterations, a state of balance between the total energy required for pyrolysis and the pyrolysis gas and pyrolysis oil produced by pyrolysis can be finally achieved. And through the pyrolysis oil condensation separation module and the pyrolysis oil and pyrolysis gas stored inside the non-condensable gas pressure-stabilizing gas storage cabinet, a flexible interval during logic adjustment is guaranteed, and energy reserves are met when the equipment is restarted.

[0029] The control logic is as follows:

[0030] W 胶粒 =kW 碳渣

[0031] W 处理量 =W 碳渣 +kW 碳渣

[0032] Where: W 处理量 —Total pyrolysis volume of pyrolysis system, kg / h

[0033] W 胶粒 —Colloid particle processing capacity, kg / h

[0034] W 碳渣 —Carbon slag processing capacity, kg / h

[0035] K—Ratio of rubber particles to carbon slag

[0036] Q 总能耗 =W 碳渣 P 碳渣 +kW 碳渣 P 胶粒 +Q 高值化

[0037] Where: Q 总能耗 — Pyrolysis W 胶粒 and W 碳渣 Total energy required, kJ / h

[0038] Q 高值化 —Energy required for carbon black high value module, kJ / h

[0039] P 碳渣 —Energy required for pyrolysis of unit weight of carbon slag, kJ / Kg

[0040] P 胶粒 —Energy required for thermal decomposition of unit weight of particles, kJ / Kg

[0041] W 碳渣 —Carbon slag processing capacity, kg / h

[0042] K—Ratio of rubber particles to carbon slag

[0043] Q 产出 =W 碳渣 α1q 油 +kW 碳渣 α2q 油 +W 碳渣 β1q 气 +kW 碳渣 β2q 气

[0044] Where: α1—pyrolysis oil yield corresponding to carbon residue, %

[0045] α2—pyrolysis oil yield corresponding to the particles, %

[0046] β1—pyrolysis gas yield corresponding to carbon slag, %

[0047] β2—pyrolysis gas yield corresponding to the colloid particles, %

[0048] q 油 —Heating value of pyrolysis oil, kJ / Kg

[0049] q 气 —Heating value of pyrolysis gas, kJ / Kg

[0050] W 碳渣 —Carbon slag processing capacity, kg / h

[0051] K—Ratio of rubber particles to carbon slag

[0052] Q 总能耗 ≈Q 产出 +Q 缓存

[0053] Where: Q 缓存 —The pyrolysis oil condensation separation module and the non-condensable gas pressure-stabilizing gas storage cabinet are used to regulate the pyrolysis oil and pyrolysis gas required

[0054] Q 产出 —The total energy of the pyrolysis gas and pyrolysis oil produced by the mixture of carbon slag and waste tire rubber pellets after the carbon slag / rubber pellets co-pyrolysis upgrading module

[0055] The present application also proposes a method for high-value resource utilization of carbon residue and waste tire rubber particles by co-pyrolysis, which is based on a high-value resource utilization system for co-pyrolysis of carbon residue and waste tire rubber particles, and includes the following steps:

[0056] Step 1, using a carbon slag / colloid particle receiving and mixing module to mix the carbon slag and the colloidal particles into a uniformly mixed mixture;

[0057] Step 2: The mixed material is sent to the material buffer silo for temporary storage under the action of the material lifting and conveying module;

[0058] Step 3: The colloid particles enter the carbon slag / colloid particles co-pyrolysis and upgrading module from the material buffer silo, and pass through the homogenization pyrolysis spiral and the high-temperature upgrading spiral to generate high-temperature pyrolysis oil gas and pyrolysis crude carbon black. The high-temperature pyrolysis oil gas is led to the pyrolysis oil condensation separation module, and the pyrolysis crude carbon black is led to the carbon black cooling buffer silo;

[0059] Step 4: The high-temperature pyrolysis oil and gas are separated into pyrolysis oil and non-condensable gas after passing through the pyrolysis oil condensation and separation module, and the non-condensable gas enters the non-condensable gas pressure-stabilizing gas storage cabinet. The pyrolysis oil is burned in the hot air furnace in the carbon slag / colloid particle co-pyrolysis and quality improvement module to provide heat for the carbon slag / colloid particle co-pyrolysis. The non-condensable gas goes to the carbon black high-value processing module to provide heat for the high-value processing of crude carbon black. When the pyrolysis gas volume sensor feedbacks that the non-condensable gas volume is insufficient, the surplus pyrolysis oil can also be used in the carbon black high-value processing module;

[0060] Step 5, the pyrolysis crude carbon black enters the carbon black cooling buffer bin for cooling and storage;

[0061] Step 6: The crude carbon black enters the carbon black high-value processing module for high-value processing to produce high-quality carbon black particles;

[0062] Step 7, the waste heat flue gas discharged from the carbon slag / colloid particle co-pyrolysis and upgrading module and the carbon black high-value processing module passes through the flue gas purification module to remove pollutants such as NOx, SO2 and particulate matter in the flue gas, and the clean flue gas is discharged through the chimney.

[0063] Compared with the prior art, the present invention has the following beneficial effects:

[0064] Compared with the prior art, the system and method for high-value resource utilization of carbon slag and waste tire rubber particles of the present invention realizes high-value resource utilization of low-quality carbon slag and produces high-quality carbon black particles. The present invention has the advantages of high pyrolysis efficiency, compact equipment, low investment cost, and long operation cycle. By setting up a measurement and prediction control module, the concept of automatically adjusting the carbon slag / rubber particle mixing ratio is proposed, and the purpose of adaptive adjustment and automatic operation is achieved by combining the reserves of pyrolysis oil and pyrolysis gas and the weight of the mixed material. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 A system flow chart of a system and method for high-value resource utilization of carbon residue and waste tire rubber particles co-pyrolysis according to the present invention;

[0066] Figure 2 It is a schematic diagram of a carbon slag / rubber pellet receiving and mixing module in a system and method for high-value resource utilization of carbon slag and waste tire rubber pellets by co-pyrolysis of the present invention;

[0067] Figure 3 A flow chart of a carbon slag / rubber pellet co-pyrolysis and quality improvement module of a carbon slag and waste tire rubber pellet co-pyrolysis high-value resource utilization system and method of the present invention;

[0068] Figure 4 A flow chart of a calculation prediction control module in a system and method for high-value resource utilization of carbon residue and waste tire rubber particles by co-pyrolysis of the present invention; DETAILED DESCRIPTION

[0069] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described below in conjunction with the embodiments and the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0070] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "include" or "comprise" and the like used in the present invention mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0071] Example

[0072] See also Figure 1 The present embodiment provides a carbon slag and waste tire rubber co-pyrolysis high-value resource utilization system, comprising a carbon slag / rubber pellet receiving and mixing module 1, a material lifting and conveying module 2, a material buffer silo 3, a carbon slag / rubber pellet co-pyrolysis and quality improvement module 4, a pyrolysis oil condensation and separation module 5, a non-condensable gas pressure-stabilizing gas storage cabinet 6, a carbon black cooling and buffering bin 7, a carbon black high-value processing module 8, high-quality carbon black 9, a flue gas purification module 10, and a measurement and prediction control module 11.

[0073] The carbon slag / colloid pellet receiving and mixing module 1 in this embodiment is used to mix carbon slag and colloidal pellets. Figure 2The carbon slag / colloid pellet receiving and mixing module 1 comprises a material bin 101, a material partition 102, an electric gate valve 103, a coaxial bidirectional screw device 104, a gel pellet outlet 105, a carbon black outlet 106, a guide bin 107, a collision column 108, and a carbon slag / colloid pellet mixed material buffer bin 109. The material bin 101 is divided into two chambers by the material partition 102, the left chamber is used to enter the gel pellet material, and the right chamber is used to enter the carbon slag material, and an electric gate valve 103 is arranged at the lower part of the right chamber, and the amount of carbon slag material passing through is controlled by adjusting the electric gate valve 103, and finally different mixing ratios of carbon slag / colloid pellets are achieved. The coaxial bidirectional spiral device 104 includes a spiral cylinder, and a spiral shaft and spiral blades arranged in the spiral cylinder. Specifically, the coaxial bidirectional spiral device 104 is divided into two sections by a material partition 102 in the middle. Two positive and negative spiral blades are arranged on the spiral shaft at both ends of the material partition 102. The spiral shaft is driven to rotate by a motor so that the colloid particles and carbon slag can fall from both ends of the spiral cylinder, that is, the colloid particles fall from the colloid particle outlet 105, and the carbon slag falls from the carbon black outlet 106. The falling carbon slag and colloid particles are guided by the inclined plates on both sides of the guide bin 107. The carbon slag and colloid particles fall along the guide bin 107 and collide with the top of the collision column 108 to mix, and then fall into the carbon slag / colloid particle mixture material buffer bin 109 for temporary storage. Furthermore, a plurality of bin wall vibrators can be arranged on the lower bin wall of the guide bin 107 to prevent material accumulation and improve the fluidity of the material.

[0074] The material lifting and conveying module 2 in this embodiment is used to convey the mixed material;

[0075] The material buffer silo 3 in this embodiment is used to store the mixed material conveyed by the material lifting module 2, and is equipped with a mixed material weight sensor 1101, which is used to measure the weight of the mixed material in the material buffer silo 3 and feed back the data to the measurement prediction control module 11;

[0076] The carbon slag / colloid particle co-pyrolysis and upgrading module 4 in this embodiment utilizes a heat source to co-pyrolyze the carbon slag and the colloidal particles. Figure 3The carbon slag / colloid particle co-pyrolysis and upgrading module 4 includes a homogenous pyrolysis screw 401, a high-temperature upgrading screw 402, a hot air furnace 403 and a burner 404. The material buffer bin 3 and the homogenous pyrolysis screw 401, the high-temperature upgrading screw 402, and the carbon black cooling buffer bin 7 are connected structures arranged up and down. The mixed material in the material buffer bin 3 falls into the homogenous pyrolysis screw 401 under the action of gravity, and moves to the other side of the homogenous pyrolysis screw under the push of the screw. After the pyrolysis is completed in the homogenous pyrolysis screw 401, the mixed material falls into the high-temperature upgrading screw 402 under the action of gravity, and moves to the other side of the high-temperature upgrading screw under the push of the screw. Deep pyrolysis is carried out through the high-temperature upgrading screw, and finally falls into the cooling buffer bin 7 under the action of gravity. The homogenous pyrolysis spiral 401 and the high-temperature quality-improving spiral 402 are both heated by the high-temperature flue gas from the hot blast furnace 403, and the set temperature of the high-temperature quality-improving spiral 402 is higher than the set temperature of the homogenous pyrolysis spiral 401. The temperature of the two spirals is adjusted by controlling the different high-temperature flue gas flow rates of the two spirals. The larger the high-temperature flue gas flow rate, the higher the temperature; conversely, the smaller the high-temperature flue gas flow rate, the lower the temperature. Through the high and low temperature design of the two spirals, the homogenous pyrolysis spiral 401 with a slightly lower temperature is preferentially used to complete most of the pyrolysis of the mixed material, and finally the high-temperature quality-improving spiral 402 with a higher temperature is used to completely pyrolyze the mixed material that is not completely pyrolyzed, and the transmittance of the crude carbon black toluene extract produced is higher than 90%. The high-temperature flue gas of the hot blast furnace 403 is produced after the pyrolysis oil condensed by the pyrolysis oil condensation and separation module 5 is burned by the burner 404.

[0077] The homogenous pyrolysis spiral 401 includes a second spiral cylinder, in which a second spiral shaft and a second spiral blade are arranged, and the second spiral shaft is driven by a motor to rotate the second spiral blade. Specifically, a material paddle 4011 is arranged between two second spiral blades on the second spiral shaft of the homogenous pyrolysis spiral 401, and a total of 6 to 8 material paddles 4011 are arranged on the second spiral shaft of the homogenous pyrolysis spiral 401. The material paddle 4011 is used to paddle the mixed material in the homogenous pyrolysis spiral 401, so that materials with different temperatures are mixed evenly under the action of the material paddle 4011. It prevents the mixed material in the homogenous pyrolysis spiral 401 from having a high local temperature and insufficient local temperature, which affects the pyrolysis effect. Finally, it has the effect of strengthening heat exchange.

[0078] The high-temperature quality-improving spiral 402 includes a third spiral cylinder, in which a third spiral shaft and a third spiral blade are arranged, and the third spiral shaft is driven by a motor to rotate the third spiral blade.

[0079] The pyrolysis oil condensation and separation module 5 in this embodiment is used to condense the pyrolysis oil gas produced by the carbon slag / colloid particle co-pyrolysis and upgrading module 4 after pyrolysis, and the condensed pyrolysis oil is sent to the carbon slag / colloid particle co-pyrolysis and upgrading module 4 as a fuel for combustion. The pyrolysis oil condensation and separation module 5 is provided with a liquid level sensor 1102 for monitoring the pyrolysis oil reserves and feeding back a signal to the measurement and prediction control module 11.

[0080] The non-condensable gas pressure-stabilizing gas storage tank 6 in this embodiment is used to store the non-condensable gas separated by the pyrolysis oil condensation and separation module 5. The non-condensable gas pressure-stabilizing gas storage tank 6 adopts a floating plate design. The floating plate on the non-condensable gas pressure-stabilizing gas storage tank 6 will move up and down with the change of the non-condensable gas amount therein, and feedback signals to the measurement and prediction control module 11 through the pyrolysis gas amount sensor 1103. The non-condensable gas stored in the non-condensable gas pressure-stabilizing gas storage tank 6 is used as fuel for the carbon black high-value processing module 8.

[0081] The carbon black cooling buffer bin 7 in this embodiment is used to store the crude carbon black produced by the carbon slag / colloid particle co-pyrolysis and upgrading module 4, and plays a role in slowly cooling the crude carbon black.

[0082] The carbon black high-value processing module 8 in this embodiment is used to process the crude carbon black produced by the carbon slag / colloid particle co-pyrolysis and upgrading module 4 to produce higher quality carbon black particles. The carbon black high-value processing module 8 is provided with an oil-gas dual-purpose burner, which is mainly provided with pyrolysis gas as fuel by the non-condensable gas pressure-stabilizing gas storage tank 6. When the pyrolysis gas reserves are insufficient, the pyrolysis oil condensation and separation module 5 can also provide pyrolysis oil as fuel.

[0083] The high-quality carbon black 9 in this embodiment is the carbon black particles produced after being processed by the carbon black high-value processing module 8;

[0084] The flue gas purification module 10 in this embodiment is used to remove nitrogen and sulfur pollutants in the flue gas generated after the pyrolysis oil and pyrolysis gas are burned by the burner, and the generated clean flue gas is discharged into the atmosphere. The flue gas purification module 10 removes NOx, SO2 and particulate pollutants in the tail gas through low-temperature SCR and wet desulfurization technology.

[0085] The calculation prediction control module 11 in this embodiment, see Figure 4, by obtaining the pyrolysis oil of the pyrolysis oil condensation and separation module 5 and the non-condensable gas reserves in the non-condensable gas pressure-stabilizing gas storage cabinet 6, as well as the material amount in the material buffer silo 3, the change trend of the pyrolysis oil and non-condensable gas is automatically calculated and obtained, and the ratio of output and energy consumption under the current carbon slag and colloid particle mixing ratio is predicted. The normal operation of the measurement prediction control module 11 automatically calculates the mixing ratio of carbon slag and colloid particles, and controls the carbon slag / colloid particle receiving mixing module 1 to adjust the mixing ratio of carbon slag and colloid particles. Through the above adjustment, after multiple iterations, a state of balance between the total energy required for pyrolysis and the pyrolysis gas and pyrolysis oil produced by pyrolysis can be finally achieved. And through the pyrolysis oil and pyrolysis gas stored in the pyrolysis oil condensation and separation module 5 and the non-condensable gas pressure-stabilizing gas storage cabinet 6, a flexible range during logic adjustment is guaranteed, and energy reserves are met when the equipment is restarted.

[0086] The control logic is as follows:

[0087] W 胶粒 =kW 碳渣

[0088] W 处理量 =W 碳渣 +kW 碳渣

[0089] Where: W 处理量 —Total pyrolysis volume of pyrolysis system, kg / h

[0090] W 胶粒 —Colloid particle processing capacity, kg / h

[0091] W 碳渣 —Carbon slag processing capacity, kg / h

[0092] K—Ratio of rubber particles to carbon slag

[0093] Q 总能耗 =W 碳渣 P 碳渣 +kW 碳渣 P 胶粒 +Q 高值化

[0094] Where: Q 总能耗 — Pyrolysis W 胶粒 and W 碳渣 Total energy required, kJ / h

[0095] Q 高值化 —Energy required for carbon black high value module, kJ / h

[0096] P 碳渣 —Energy required for pyrolysis of unit weight of carbon slag, kJ / Kg

[0097] P 胶粒—Energy required for thermal decomposition of unit weight of particles, kJ / Kg

[0098] W 碳渣 —Carbon slag processing capacity, kg / h

[0099] K—Ratio of rubber particles to carbon slag

[0100] Q 产出 =W 碳渣 α1q 油 +kW 碳渣 α2q 油 +W 碳渣 β1q 气 +kW 碳渣 β2q 气

[0101] Where: α1—pyrolysis oil yield corresponding to carbon residue, %

[0102] α2—pyrolysis oil yield corresponding to the particles, %

[0103] β1—pyrolysis gas yield corresponding to carbon slag, %

[0104] β2—pyrolysis gas yield corresponding to the colloid particles, %

[0105] q 油 —Heating value of pyrolysis oil, kJ / Kg

[0106] q 气 —Heating value of pyrolysis gas, kJ / Kg

[0107] W 碳渣 —Carbon slag processing capacity, kg / h

[0108] K—Ratio of rubber particles to carbon slag

[0109] Q 总能耗 ≈Q 产出 +Q 缓存

[0110] Where: Q 缓存 —The pyrolysis oil condensation separation module and the non-condensable gas pressure-stabilizing gas storage cabinet are used to regulate the pyrolysis oil and pyrolysis gas required

[0111] Q 产出 —The total energy of the pyrolysis gas and pyrolysis oil produced by the mixture of carbon slag and waste tire rubber pellets after the carbon slag / rubber pellets co-pyrolysis upgrading module

[0112] This embodiment provides a method for high-value resource utilization of carbon residue and waste tire rubber particles by co-pyrolysis, comprising the following steps:

[0113] Step 1, using the carbon slag / colloid pellet receiving and mixing module 1 to mix the carbon slag and the colloidal pellets into a uniformly mixed mixture;

[0114] Step 2: The mixed material is sent to the material buffer bin 3 for temporary storage under the action of the material lifting and conveying module 2;

[0115] Step 3, the colloid particles enter the carbon slag / colloid particles co-pyrolysis and upgrading module 4 from the material buffer silo 3, and pass through the homogenization pyrolysis spiral 401 and the high-temperature upgrading spiral 402 to generate high-temperature pyrolysis oil gas and pyrolysis crude carbon black, the high-temperature pyrolysis oil gas is removed from the pyrolysis oil condensation separation module 5, and the pyrolysis crude carbon black is removed from the carbon black cooling buffer 7;

[0116] Step 4, the high-temperature pyrolysis oil and gas are separated into pyrolysis oil and non-condensable gas after passing through the pyrolysis oil condensation separation module 5, and the non-condensable gas enters the non-condensable gas pressure-stabilizing gas storage cabinet 6. The pyrolysis oil is burned in the hot air furnace in the carbon slag / colloid particle co-pyrolysis and upgrading module 4 to provide heat for the carbon slag / colloid particle co-pyrolysis. The non-condensable gas goes to the carbon black high-value processing module 8 to provide heat for the high-value processing of crude carbon black. When the pyrolysis gas volume sensor 1103 feedbacks that the non-condensable gas volume is insufficient, the surplus pyrolysis oil can also be used in the carbon black high-value processing module 8;

[0117] Step 5, the pyrolysis crude carbon black enters the carbon black cooling buffer bin 7 for cooling and storage;

[0118] Step 6, the crude carbon black enters the carbon black high-value processing module 8 for high-value processing to produce high-quality carbon black particles;

[0119] Step 7, the waste heat flue gas discharged from the carbon slag / colloid particle co-pyrolysis and upgrading module 4 and the carbon black high-value processing module 8 passes through the flue gas purification module 10 to remove pollutants such as NOx, SO2 and particulate matter in the flue gas, and the clean flue gas is discharged through the chimney.

[0120] The features and benefits of the present invention are explained by reference to the embodiments. Accordingly, the present invention expressly should not be limited to these exemplary embodiments illustrating some possible non-limiting combinations of features, which may exist alone or in other combinations of features.

[0121] The above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A high-value resource utilization system for co-pyrolysis of carbon residue and waste tire rubber particles, characterized in that: include: The carbon slag / colloid pellet receiving and mixing module (1) is used to mix the carbon slag and the colloidal pellets, and the obtained mixed material is sent to the material buffer silo (3) through the material lifting and conveying module (2); A material lifting and conveying module (2) is used to convey mixed materials; A material buffer silo (3) is used to store the mixed material transported by the material lifting and conveying module (2), and a mixed material weight sensor (1101) is installed in the material buffer silo (3); The carbon slag / colloid particle co-pyrolysis quality improvement module (4) utilizes a heat source to co-pyrolyze the carbon slag and the colloid particle, and the generated pyrolysis oil and gas are directed to the pyrolysis oil condensation separation module (5), and the generated crude carbon black is directed to the carbon black cooling buffer (7); The pyrolysis oil condensation and separation module (5) is used to condense the pyrolysis oil and gas generated by the carbon slag / colloid particle co-pyrolysis and upgrading module (4) to separate the pyrolysis oil and non-condensable gas, and the non-condensable gas is sent to the non-condensable gas pressure-stabilizing gas storage cabinet (6). The pyrolysis oil condensation and separation module (5) is equipped with a pyrolysis oil liquid level sensor (1102); A non-condensable gas pressure-stabilizing gas storage cabinet (6) for storing the non-condensable gas separated by the pyrolysis oil condensation separation module (5), wherein the non-condensable gas pressure-stabilizing gas storage cabinet (6) is equipped with a pyrolysis gas volume sensor (1103); A carbon black cooling and buffering bin (7) is used to store the crude carbon black produced by the carbon slag / colloid particle co-pyrolysis and upgrading module (4); A carbon black high-value processing module (8) is used to process the crude carbon black produced by the carbon slag / colloid particle co-pyrolysis quality improvement module (4) to produce higher quality carbon black particles; High-quality carbon black (9) is carbon black particles produced after being processed by the carbon black high-value processing module (8); The flue gas purification module (10) is respectively connected to the carbon slag / colloid particle co-pyrolysis and upgrading module (4) and the carbon black high-value processing module (8) to remove the waste flue gas generated after the pyrolysis oil and pyrolysis gas are burned; The measurement prediction control module (11) obtains the pyrolysis oil of the pyrolysis oil condensation separation module (5) through the pyrolysis oil level sensor (1102) and the non-condensable gas reserves in the non-condensable gas pressure-stabilizing gas storage cabinet (6) through the pyrolysis gas volume sensor (1103), and obtains the material volume in the material buffer bin (3) through the mixed material weight sensor (1101), automatically calculates the required mixing ratio of carbon slag and colloid particles, controls the carbon slag / colloid particle receiving mixing module (1) to adjust the mixing ratio of carbon slag and colloid particles, and automatically replenishes the mixed material into the material buffer bin (3) through the material lifting module (2).

2. The high-value resource utilization system of carbon residue and waste tire rubber particles co-pyrolysis according to claim 1 is characterized in that: The carbon slag / colloid pellet receiving and mixing module (1) comprises, from top to bottom, a material bin (101) which is interconnected, a material partition plate (102), an electric gate valve (103), a coaxial bidirectional screw device (104), a colloidal pellet outlet (105), a carbon black outlet (106), a guide bin (107), a collision column (108), and a carbon slag / colloid pellet mixed material buffer bin (109); The material bin (101) is divided into two bins by a material partition (102), one bin is used for entering the granular material, and the other bin is used for entering the carbon slag material. An electric gate valve (103) is arranged at the bottom of the bin on the side where the carbon slag material enters, and the flow area of ​​the carbon slag material is controlled by adjusting the electric gate valve (103).

3. The high-value resource utilization system of carbon residue and waste tire rubber particles co-pyrolysis according to claim 2 is characterized in that: The coaxial bidirectional spiral device (104) comprises a spiral cylinder, and a spiral shaft and spiral blades arranged in the spiral cylinder. The middle of the coaxial bidirectional spiral device (104) is divided into two sections by a material partition (102). Two positive and negative spiral blades are arranged on the spiral shaft at both ends of the material partition 102, so that the colloid particles fall from the colloid particle outlet (105) of the spiral cylinder, and the carbon slag falls from the carbon black outlet (106).

4. The carbon residue and waste tire rubber co-pyrolysis high-value resource utilization system according to claim 3 is characterized in that: The falling carbon slag and rubber particles are guided by the inclined plates on both sides of the guide bin (107). The carbon slag and rubber particles fall along the guide bin (107) and collide with the top of the collision column (108) to mix, and then fall into the carbon slag / rubber particle mixed material buffer bin (109) for temporary storage.

5. The carbon residue and waste tire rubber co-pyrolysis high-value resource utilization system according to claim 1 is characterized in that: The carbon slag / colloid particle co-pyrolysis and upgrading module (4) comprises a homogenizing pyrolysis screw (401), a high-temperature upgrading screw (402), a hot air furnace (403) and a burner (404); The homogenizing pyrolysis spiral (401) and the high-temperature quality-improving spiral (402) are both heated by high-temperature flue gas from the hot blast furnace (403), and the set temperature of the high-temperature quality-improving spiral (402) is higher than the set temperature of the homogenizing pyrolysis spiral (401); The high-temperature flue gas of the hot blast furnace (403) is generated after the pyrolysis oil condensed by the pyrolysis oil condensation and separation module (5) is burned by the burner (404).

6. The carbon residue and waste tire rubber co-pyrolysis high-value resource utilization system according to claim 5 is characterized in that: A material paddle (4011) is provided between two second spiral blades on the second spiral shaft of the homogeneous pyrolysis spiral (401), and a total of 6 to 8 material paddles (4011) are provided on the second spiral shaft of the homogeneous pyrolysis spiral (401), and the material paddles (4011) are used to paddle the mixed material in the homogeneous pyrolysis spiral (401).

7. The high-value resource utilization system of carbon residue and waste tire rubber particles co-pyrolysis according to claim 1 is characterized in that: The non-condensable gas pressure-stabilizing gas tank (6) adopts a floating plate design. The floating plate on the non-condensable gas pressure-stabilizing gas tank (6) will float up and down as the amount of non-condensable gas therein changes, and a signal is fed back to the measurement and prediction control module (11) through the pyrolysis gas volume sensor (1103). The non-condensable gas stored in the non-condensable gas pressure-stabilizing gas tank (6) is used as fuel for the carbon black high-value processing module (8).

8. The carbon residue and waste tire rubber co-pyrolysis high-value resource utilization system according to claim 1 is characterized in that: The carbon black high-value processing module (8) is used to perform high-value processing on the crude carbon black stored in the carbon black cooling and buffering bin (7) and produce high-quality carbon black (9); The carbon black high-value processing module (8) is provided with an oil-gas dual-purpose burner, and the oil-gas dual-purpose burner is provided with pyrolysis gas as fuel by the non-condensable gas pressure-stabilizing gas storage cabinet (6). When the pyrolysis gas reserves are insufficient, the pyrolysis oil condensation and separation module (5) provides pyrolysis oil as fuel.

9. The carbon residue and waste tire rubber co-pyrolysis high-value resource utilization system according to claim 1 is characterized in that: The measurement prediction control module (11) comprises a mixed material weight sensor (1101), a pyrolysis oil level sensor (1102), a pyrolysis gas volume sensor (1103), an electric gate valve adjustment signal (1104) and a coaxial reverse spiral start signal (1105); The measurement prediction control module (11) obtains the signals of the pyrolysis oil level sensor (1102) and the pyrolysis gas volume sensor (1103), respectively obtains the current amount of pyrolysis oil and pyrolysis gas, calculates the time for continuing to provide combustion, and controls the electric gate valve adjustment signal (1104), adjusts the opening of the electric gate valve, and controls the mixing ratio of carbon slag and colloid particles; through the pyrolysis oil and pyrolysis gas stored in the pyrolysis oil condensation separation module (5) and the non-condensable gas pressure-stabilizing gas storage cabinet (6), a flexible range is guaranteed during logic adjustment, and energy reserves are met when the equipment is restarted; The control logic is as follows: W 胶粒 =kW 碳渣 IN 处理量 =In 碳渣 +kW 碳渣 Where: W 处理量 —Total pyrolysis volume of pyrolysis system, kg / h W 胶粒 —Colloid particle processing capacity, kg / h W 碳渣 —Carbon slag processing capacity, kg / h K—Ratio of rubber particles to carbon slag Q 总能耗 =W 碳渣 P 碳渣 +kW 碳渣 P 胶粒 +Q 高值化 Where: Q 总能耗 — Pyrolysis W 胶粒 and W 碳渣 Total energy required, kJ / h Q 高值化 —Energy required for carbon black high value module, kJ / h P 碳渣 —Energy required for pyrolysis of unit weight of carbon slag, kJ / Kg P 胶粒 —Energy required for thermal decomposition of unit weight of particles, kJ / Kg W 碳渣 —Carbon slag processing capacity, kg / h K—Ratio of rubber particles to carbon slag Q 产出 =W 碳渣 α1q 油 +kW 碳渣 α2q 油 +W 碳渣 β1q 气 +kW 碳渣 β2q 气 Where: α1—pyrolysis oil yield corresponding to carbon residue, % α2—pyrolysis oil yield corresponding to the particles, % β1—pyrolysis gas yield corresponding to carbon slag, % β2—pyrolysis gas yield corresponding to the colloid particles, % q 油 —Heating value of pyrolysis oil, kJ / Kg q 气 —Heating value of pyrolysis gas, kJ / Kg W 碳渣 —Carbon slag processing capacity, kg / h K—Ratio of rubber particles to carbon slag Q 总能耗 ≈Q 产出 +Q 缓存 Where: Q 缓存 —The pyrolysis oil condensation separation module and the non-condensable gas pressure-stabilizing gas storage cabinet are used to regulate the pyrolysis oil and pyrolysis gas required Q 产出 —The total energy of pyrolysis gas and pyrolysis oil produced after the mixture of carbon residue and waste tire rubber pellets passes through the carbon residue / rubber pellets co-pyrolysis and upgrading module.

10. A method for high-value resource utilization of carbon residue and waste tire rubber particles by co-pyrolysis, characterized in that: A system for implementing the high-value resource utilization of carbon residue and waste tire rubber particles co-pyrolysis according to any one of claims 1 to 9 comprises the following steps: Step 1, using a carbon slag / colloid particle receiving and mixing module (1) to mix the carbon slag and the colloidal particles into a uniformly mixed mixture; Step 2, the mixed material is sent to the material buffer silo (3) for temporary storage under the action of the material lifting and conveying module (2); Step 3, the colloid particles enter the carbon slag / colloid particles co-pyrolysis and upgrading module (4) from the material buffer silo (3), and pass through the homogenizing pyrolysis spiral (401) and the high-temperature upgrading spiral (402) to generate high-temperature pyrolysis oil gas and pyrolysis crude carbon black. The high-temperature pyrolysis oil gas flows to the pyrolysis oil condensation and separation module (5), and the pyrolysis crude carbon black flows to the carbon black cooling buffer silo (7); Step 4, the high-temperature pyrolysis oil and gas are separated into pyrolysis oil and non-condensable gas after passing through the pyrolysis oil condensation separation module (5), the non-condensable gas enters the non-condensable gas pressure-stabilizing gas storage cabinet (6), the pyrolysis oil is burned in the hot air furnace in the carbon slag / colloid particle co-pyrolysis and upgrading module (4) to provide heat for the carbon slag / colloid particle co-pyrolysis, and the non-condensable gas goes to the carbon black high-value processing module (8) to provide heat for the high-value processing of crude carbon black. When the pyrolysis gas volume sensor (1103) feedbacks that the non-condensable gas volume is insufficient, the surplus pyrolysis oil is used in the carbon black high-value processing module (8); Step 5, the pyrolysis crude carbon black enters the carbon black cooling buffer bin (7) for cooling and storage; Step 6, the crude carbon black enters the carbon black high-value processing module (8) for high-value processing to produce high-quality carbon black particles; In step 7, the waste heat flue gas discharged from the carbon slag / colloid particle co-pyrolysis and upgrading module (4) and the carbon black high-value processing module (8) passes through the flue gas purification module (10) to remove NOx, SO2 and particulate matter in the flue gas, and the clean flue gas is discharged through the chimney.

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