Distillation, impurity removal and purification equipment for thermal cracking mixed oil
By designing pyrolysis mixed oil distillation, impurity removal and purification equipment and utilizing heating devices and control valve technology, the problem of impurities in pyrolysis oil is solved, and efficient impurity separation and purification effects are achieved.
Patent Information
- Application Number
- CN202422563866.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-23
AI Technical Summary
The pyrolysis oil produced by the cracking of waste tires contains impurities such as water, which affects its further use.
A thermal cracking mixed oil distillation and impurity removal purification equipment is designed, which includes an activated distillation kettle, a heating device, a stirring shaft and a stirring paddle. By controlling the outlet valves of water vapor and oil vapor, effective separation and removal of impurities can be achieved.
It effectively removes impurities in pyrolysis oil, ensures the purity and quality of the product, and improves the utilization value of pyrolysis oil.
Smart Images
Figure CN223373031U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of distillation, impurity removal and purification of pyrolysis mixed residue oil, in particular to a device for distillation, impurity removal and purification of pyrolysis mixed oil. Background Art
[0002] The accumulation of large quantities of waste tires not only occupies land, but is also extremely prone to fire and environmental pollution. Recycling waste tires can not only alleviate their pressure on the environment and reduce pollution, but also achieve effective resource recycling. Current methods for processing waste tires include prototype modification, production of recycled rubber and rubber powder, incineration, and pyrolysis. Among them, waste tire pyrolysis refers to an irreversible thermochemical reaction in which organic matter in waste tires is cracked at high temperatures in an oxygen-free or oxygen-deficient atmosphere, escaping volatile products and forming solid coke. Gas, liquid, and solid products can be formed during incomplete thermal degradation. This method can completely crack waste tires into useful products such as pyrolysis oil, pyrolysis carbon black, and pyrolysis non-condensable gases. However, the pyrolysis oil produced by the cracking of waste tires often contains other impurities such as water, and needs to be purified before further use. Utility Model Content
[0003] The details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent.
[0004] The utility model provides a pyrolysis mixed oil distillation and impurity removal purification device, which solves the technical problem that the pyrolysis oil produced by the pyrolysis of waste tires contains water and other impurities, and has the characteristic of effectively removing impurities in the pyrolysis oil produced by the pyrolysis of waste tires.
[0005] The utility model discloses a device for distilling and removing impurities from pyrolysis mixed oil, comprising an activated distillation kettle and a heating device for providing heat to the activated distillation kettle; the activated distillation kettle further comprises a kettle body, a stirring shaft, a stirring paddle, and a slag removal scraper; the kettle body forms a chamber for distilling and removing impurities from pyrolysis mixed oil, a pyrolysis mixed oil inlet for inputting the pyrolysis mixed oil into the chamber is provided on one side of the upper portion of the kettle body, a water vapor outlet for discharging water vapor from the chamber is provided on the other side of the upper portion of the kettle body, and an oil vapor outlet for discharging oil vapor from the chamber is provided on the top of the kettle body; a water vapor outlet switching valve is provided at the water vapor outlet, and an oil vapor outlet switching valve is provided at the oil vapor outlet; the stirring shaft passes through the kettle body from the top of the kettle body and extends to the top and bottom of the kettle body; the stirring paddles are arranged in a staggered manner from top to bottom in the chamber and are connected to the stirring shaft; the slag removal scraper is connected to the stirring shaft and is provided at the bottom of the chamber.
[0006] In some embodiments, a slag outlet is provided at the bottom of the kettle body for discharging slag from the chamber, and an additive inlet is provided at the top of the kettle body for inputting additives into the chamber.
[0007] In some embodiments, when the chamber begins to heat up under the heating of the heating device and the temperature in the chamber is lower than 180°C, the water vapor outlet switching valve is configured to be in an open state and the oil vapor outlet switching valve is configured to be in a closed state; when the temperature in the chamber is not lower than 180°C, the water vapor outlet switching valve is configured to be in a closed state and the oil vapor outlet switching valve is configured to be in an open state.
[0008] In some embodiments, a float level gauge is provided on the upper portion of the kettle body, and a material level gauge is provided on the bottom portion.
[0009] In some embodiments, the heating device includes a heating coil and a thermal oil heating tank; the heating coil is arranged outside the kettle body; the thermal oil heating tank is connected to the heating coil for heating and storing the thermal oil.
[0010] In some embodiments, an exhaust pipe is connected to the thermal oil heating tank, and a heater is provided in the thermal oil heating tank.
[0011] In some embodiments, the thermal cracking mixed oil distillation and impurity removal purification equipment further includes a horizontal steam heat exchanger connected to the activated distillation kettle through the steam outlet, and the horizontal steam heat exchanger is equipped with condensation tubes.
[0012] In some embodiments, the thermal cracking mixed oil distillation and impurity removal purification equipment further includes a cooling water recovery tank connected to the horizontal steam heat exchanger.
[0013] In some embodiments, the thermal cracking mixed oil distillation and impurity removal purification equipment further includes a primary condenser connected to the activated distillation kettle through the oil vapor outlet, and a secondary condenser connected to the primary condenser.
[0014] In some embodiments, the thermal cracking mixed oil distillation and impurity removal purification equipment further includes a light oil collection tank connected to the primary condenser and the secondary condenser.
[0015] Compared with the prior art, the beneficial effects of the present invention are:
[0016] The utility model provides a thermal cracking mixed oil distillation and impurity removal purification device, which utilizes a heating device to heat an activated distillation kettle to provide the temperature required for the reactive distillation of the thermal cracking mixed oil containing impurities, and realizes uniform mixing between materials through a stirring shaft and a stirring paddle, thereby ensuring the stable and continuous progress of the impurity removal distillation reaction process. At the same time, control valves are separately provided for the water vapor outlet and the oil vapor outlet, thereby ensuring the full separation of water vapor and oil gas and the impurity removal effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:
[0018] Figure 1 A schematic diagram of the structure of a device for distilling and removing impurities from pyrolysis mixed oil provided by an embodiment of the present utility model;
[0019] In the above figures: 101, kettle body; 1011, chamber; 1012, pyrolysis mixed oil inlet; 1013, water vapor outlet; 1014, oil vapor outlet; 1015, water vapor outlet switching valve; 1016, oil vapor outlet switching valve; 1017, slag outlet; 1018, additive inlet; 102, stirring shaft; 103, stirring paddle; 104, slag scraper; 105, float level gauge; 106, material level gauge; 201, heating coil; 202, thermal oil heating tank; 203, exhaust pipe; 3, horizontal water vapor heat exchanger; 4, cooling water recovery tank; 5, primary condenser; 6, secondary condenser; 7, light oil collection tank. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0021] The present invention provides a device for distilling and removing impurities from pyrolysis mixed oil. Figure 1 This is a schematic diagram of the structure of the thermal cracking mixed oil distillation and impurity removal purification equipment according to the embodiment of the utility model. Figure 1As shown, the pyrolysis mixed oil distillation and impurity removal purification equipment includes an activated distillation kettle and a heating device for providing heat to the activated distillation kettle; the activated distillation kettle further includes a kettle body 101, a stirring shaft 102, a stirring paddle 103, and a slag removal scraper 104; the kettle body 101 encloses a chamber 1011 for distilling and removing impurities from the pyrolysis mixed oil, and a pyrolysis mixed oil inlet 1012 for inputting the pyrolysis mixed oil into the chamber 1011 is provided on one side of the upper part of the kettle body 101, and a water vapor outlet 1012 for discharging water vapor from the chamber 1011 is provided on the other side of the upper part of the kettle body 101. The top of the kettle body 101 is provided with an oil vapor outlet 1014 for discharging oil vapor from the chamber 1011; the water vapor outlet 1013 is provided with a water vapor outlet switching valve 1015, and the oil vapor outlet 1014 is provided with an oil vapor outlet switching valve 1016; the stirring shaft 102 passes through the kettle body 101 from the top and extends to the top and bottom of the kettle body 101; the stirring paddles 103 are arranged in a staggered manner from top to bottom in the chamber 1011 and are connected to the stirring shaft 102; the slag scraper 104 is connected to the stirring shaft 102 and is provided at the bottom of the chamber 1011. The pyrolysis mixed oil distillation and impurity removal purification equipment utilizes a heating device to heat the activated distillation kettle to provide the temperature required for the reaction distillation of the pyrolysis mixed oil containing impurities, and achieves uniform mixing of the materials through the stirring shaft 102 and the stirring paddle 103, ensuring the stable and continuous progress of the impurity removal distillation reaction process. At the same time, the water vapor outlet 1013 and the oil vapor outlet 1014 are separately provided with control valves to ensure the full separation of water vapor and oil gas, and to ensure the impurity removal effect. In some embodiments, a float level gauge 105 is provided on the top of the kettle body 101, and a material level gauge 106 is provided on the bottom. A slag outlet 1017 for the slag discharge chamber 1011 is provided at the bottom of the kettle body 101, and an additive inlet 1018 for the additive input chamber 1011 is also provided at the top of the kettle body 101. In some embodiments, when the chamber 1011 begins to heat up under the heating of the heating device and the temperature inside the chamber 1011 is lower than 180°C, the water vapor outlet switching valve 1015 is configured to be in an open state and the oil vapor outlet switching valve 1016 is configured to be in a closed state; when the temperature inside the chamber 1011 is not lower than 180°C, the water vapor outlet switching valve 1015 is configured to be in a closed state and the oil vapor outlet switching valve 1016 is configured to be in an open state.
[0022] The activated still is a specialized equipment for processing mixed oil, residual oil, and ground oil from waste tires. The types and amounts of activators and additives used vary depending on the quality of the oil. Through different formulations and process routes, these oils are distilled to meet fuel oil standards. The left side of the activated still 101 is equipped with thermal oil inlet thermometers, located from bottom to top. These thermometers detect the temperature of the thermal oil entering the still and interlock with the heater in the thermal oil heating tank 202 to control the heating temperature of the thermal oil. Above the thermometers is a thermal oil inlet connected to the thermal oil delivery pipeline. Above the inlet is a heating coil 201. Depending on the height of the activated still, varying numbers of coils 201 are installed on the outer wall of the still to provide heat for the reaction materials within the still. A thermal oil return port is located above the heating coil 201, connected to the return pipeline. A float level gauge 105 is provided on the upper part of the return port of the thermal oil, which is used to detect the oil inlet level in the activated distillation kettle and is interlocked with the external delivery pump to control the liquid level in the kettle. An oil inlet pipeline is provided on the upper part of the float level gauge 105, which is connected to the external delivery pump to provide the activated distillation kettle with reaction materials. Temperature remote sensors are provided in sequence from bottom to top on the right side of the kettle body 101 of the activated distillation kettle, which are interlocked with the heater of the thermal oil heating tank 202 to control the heating temperature in the kettle body 101. A water vapor outlet of the activated distillation kettle is provided on the upper part of the temperature remote sensor, which is connected to the horizontal water vapor heat exchanger 3. A pressure remote sensor is provided on the left side of the upper head of the activated distillation kettle to observe the pressure in the kettle. An observation hole is provided on the front left side of the upper head of the activated distillation kettle, which can be used to observe the reaction of the material in the kettle body 101. A high-level additive tank is provided on the front left side of the upper head of the activated distillation kettle to provide the additives required for the reaction of the material in the kettle. A drive device is vertically arranged in the middle of the upper head of the activated distillation kettle. A driving stirring shaft 102 is arranged in the kettle. Three sets of stirring paddles 103 are equidistantly arranged on the driving stirring shaft 102. The three sets of stirring paddles 103 are arranged at 90°, 1800°, and 270° from bottom to top respectively. A slag scraper 104 is arranged at the bottom of the driving stirring shaft 102 in the kettle. This slag scraper 104 can scrape the slag that sinks to the bottom into the slag outlet. A bottom bearing sleeve is also arranged at the bottom of the driving stirring shaft 102 in the kettle to fix the driving stirring shaft 102 in the axial direction. A high-temperature oil vapor outlet is vertically arranged on the right side of the upper head of the activated distillation kettle, and its outlet is connected to the high-temperature oil vapor outlet switching valve.
[0023] Furthermore, a slag outlet is provided at the lower right side of the activated still. Slag is discharged from the bottom of the still via a slag scraper 104 installed at the lower portion and fed into a screw conveyor. The slag outlet of the screw conveyor is located in the middle of the spiral cylinder, and the screw conveyor drive device is located at the right end of the spiral cylinder. The screw conveyor is interlocked with a level gauge 106 located at the bottom right side of the activated still to prevent excessive slag from being transported and causing oil to be carried away.
[0024] In some embodiments, the heating device includes a heating coil 201 and a thermal oil heating tank 202. The heating coil 201 is mounted outside the kettle 101. The thermal oil heating tank 202 is connected to the heating coil 201 and is used to heat and store the thermal oil. An exhaust pipe 203 is connected to the thermal oil heating tank 202, and a heater is installed within the thermal oil heating tank 202. The thermal oil heating tank 202 is filled with thermal oil. A heater is installed at the bottom of the left end cap and is interlocked with a thermocouple installed vertically at the top of the tank to control the temperature of the thermal oil within the tank. A thermal oil outlet control valve is provided at the lower part of the right end cover of the thermal oil heating tank 202, and its oil outlet is connected to the oil inlet of the oil circulation pump. The oil outlet of the oil circulation pump (22) is connected to the thermal oil inlet of the activation tank through a delivery pipeline. A thermal oil return port is vertically provided at the upper left side of the thermal oil heating tank 202 tank body, which is connected to the thermal oil return port of the activation tank through a thermal oil return pipe, and the heated thermal oil is returned to the thermal oil heating tank 202 to form a heating circulation system for the thermal oil. An exhaust pipe 203 is vertically provided at the upper right side of the thermal oil heating tank 202 tank body. Water and other easily evaporable impurities will be mixed into the thermal oil. During the continuous heating process, water will vaporize, and the vaporized water vapor will be discharged outward through the exhaust pipe 203, which can effectively avoid safety hazards caused by the increase in temperature in the tank.
[0025] The activated distillation kettle's water vapor outlet is equipped with a water vapor outlet switching valve, which switches between the water vapor outlet and the high-temperature oil vapor outlet switching valve. The specific switching temperature is: immediately after the kettle is ignited and heated, the high-temperature oil vapor outlet switching valve is closed and the water vapor outlet switching valve is opened. When the kettle temperature reaches 180°C, the water vapor in the oil has completely evaporated. The water vapor outlet switching valve is closed and the high-temperature oil vapor outlet switching valve is opened, allowing the distilled high-temperature oil vapor to enter the next step of condensation recovery.
[0026] The pyrolysis mixed oil distillation and impurity removal purification equipment further includes a horizontal steam heat exchanger 3 connected to the activated still via a steam outlet 1013. The horizontal steam heat exchanger 3 is internally equipped with condenser tubes. The pyrolysis mixed oil distillation and impurity removal purification equipment further includes a cooling water recovery tank 4 connected to the horizontal steam heat exchanger 3. Steam discharged from the activated still's steam outlet is condensed in the horizontal steam heat exchanger 3, which is internally equipped with condenser tubes. Cooling water flows through the shell side, while high-temperature steam flows through the tube side. After cooling, the cold liquid enters the cooling water recovery tank 4 through the outlet. A liquid level gauge is provided on the right side of the cooling water recovery tank 4, and an outlet valve is provided at the bottom of the tank.
[0027] In some embodiments, the pyrolysis mixed oil distillation and impurity removal purification equipment also includes a primary condenser 5 connected to the activated distillation kettle via an oil vapor outlet 1014, and a secondary condenser 6 connected to the primary condenser 5. The pyrolysis mixed oil distillation and impurity removal purification equipment also includes a light oil collection tank 7 connected to the primary condenser 5 and the secondary condenser 6. The high-temperature oil vapor discharged from the high-temperature oil vapor outlet of the activated distillation kettle enters the primary condenser 5 for condensation. A thermometer is provided on the left side of the upper head of the primary condenser 5. The entering high-temperature oil vapor flows from top to bottom. The cooled cooling oil enters the oil drop port. The uncooled oil vapor continues to pass through the oil vapor delivery pipeline and enters the secondary condenser 6 for further condensation. The oil vapor inlet of the secondary condenser 6 is radially arranged on the left side of the upper head, the thermometer is axially and vertically arranged on the left side of the upper head, and the oil drop port of the secondary condenser 6 is arranged at the lower part of the lower head. The cooling oil collected by the oil drop port of the primary condenser 5 and the oil drop port of the secondary condenser 6 enters the cooling oil collection pipeline. To prevent the oil vapor entering the primary condenser 5 from being blocked at the bottom, an oil blocking device and drain valve are installed on the left side of the primary condenser 5 to collect the cooling oil. The cooling oil collected in the cooling oil pipeline is buffered in the light oil collection tank 7 and then transported to the peripheral oil tank for storage via the external oil pump and external oil pipeline.
[0028] The working process of the above-mentioned pyrolysis mixed oil distillation and impurity removal purification equipment is as follows:
[0029] The pyrolysis mixed oil containing impurities such as water enters the chamber 1011 of the kettle body 101 of the activated distillation kettle through the pyrolysis mixed oil inlet 1012. The heating device heats the activated distillation kettle. At this time, the oil vapor outlet switching valve is closed and the water vapor outlet switching valve is opened. When the temperature in the kettle body 101 rises to 180°C, the water vapor in the oil has evaporated. The water vapor outlet switching valve is closed and the oil vapor outlet switching valve is opened to allow the distilled high-temperature oil vapor to enter the next step of condensation recovery.
[0030] The above-mentioned thermal cracking mixed oil distillation and impurity removal purification equipment has the following advantages:
[0031] Efficient Reaction: The activated still provides a stable and reliable catalytic reaction environment through constant temperature and pressure operating conditions. During the reaction process, the reactants are continuously circulated back into the reactor, which continuously increases the contact area between the reactants and the catalyst, thereby promoting reaction speed and improving reaction efficiency.
[0032] Convenient Operation: The activated still is very easy to operate. Simply add the reactants and set the reaction conditions to start the reaction. Furthermore, thanks to its built-in fractionation device, most products can be easily separated and purified by fractionation after the reaction is completed, improving the purity and quality of the reaction products.
[0033] Wide application: The activated still can be used for various chemical reactions, such as esterification, hydrogenation, amidation, etc. Its advantages such as good controllability, high reaction efficiency, and simple and convenient operation make it one of the common chemical reaction equipment in industrial production.
[0034] Efficient and safe: The activated still provides a stable reaction environment, making the reaction process more stable and reliable, thereby significantly reducing the risk of danger or accidents during the reaction. It also prevents separation failures or product loss caused by excessively high boiling points during the separation process, ensuring the purity and quality of the reaction products.
[0035] Efficient purification: The built-in fractionation device allows for direct separation and purification of products, saving time and operating costs. Compared to traditional separation methods, it can more precisely control the fractionation temperature and pressure, achieving deep separation of products and reducing the potential for impurities and by-products.
[0036] Efficient and Economical: The activated still combines reaction and separation functions, completing multiple steps in one operation. This highly efficient operation significantly improves work efficiency, saves time and money, and reduces production costs.
[0037] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0038] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.
Claims
1. A thermal cracking mixed oil distillation impurity removal and purification equipment, characterized in that: The invention comprises an activated distillation kettle and a heating device for providing heat to the activated distillation kettle; the activated distillation kettle further comprises: A kettle body, the kettle body enclosing a chamber for distilling and removing impurities from the pyrolysis mixed oil, a pyrolysis mixed oil inlet for inputting the pyrolysis mixed oil into the chamber is provided on one side of the upper portion of the kettle body, a water vapor outlet for discharging water vapor from the chamber is provided on the other side of the upper portion of the kettle body, and an oil vapor outlet for discharging oil vapor from the chamber is provided on the top of the kettle body; a water vapor outlet switching valve is provided at the water vapor outlet, and an oil vapor outlet switching valve is provided at the oil vapor outlet; A stirring shaft, the stirring shaft passes through the kettle body from the top of the kettle body and extends to the top and bottom of the kettle body; Stirring paddles, the stirring paddles are arranged in a staggered manner from top to bottom in the chamber and connected to the stirring shaft; A slag removal scraper is connected to the stirring shaft and is arranged at the bottom of the chamber.
2. The thermal cracking mixed oil distillation and impurity removal purification equipment according to claim 1, characterized in that: A slag outlet for discharging slag from the chamber is provided at the bottom of the kettle body, and an additive inlet for inputting additives into the chamber is provided at the top of the kettle body.
3. The thermal cracking mixed oil distillation and impurity removal purification equipment according to claim 1 is characterized in that: When the chamber begins to heat up under the heating of the heating device and the temperature in the chamber is lower than 180°C, the water vapor outlet switching valve is configured to be in an open state and the oil vapor outlet switching valve is configured to be in a closed state; when the temperature in the chamber is not lower than 180°C, the water vapor outlet switching valve is configured to be in a closed state and the oil vapor outlet switching valve is configured to be in an open state.
4. The thermal cracking mixed oil distillation and impurity removal purification equipment according to claim 1 is characterized in that: A float level gauge is provided on the upper part of the kettle body, and a material level gauge is provided on the bottom.
5. The thermal cracking mixed oil distillation and impurity removal purification equipment according to claim 1 is characterized in that: The heating device comprises: A heating coil, the heating coil being arranged outside the kettle body; A thermal oil heating tank is connected to the heating coil and is used for heating and storing the thermal oil.
6. The thermal cracking mixed oil distillation and impurity removal purification equipment according to claim 5, characterized in that: The thermal oil heating tank is connected to an exhaust pipe, and a heater is provided in the thermal oil heating tank.
7. The thermal cracking mixed oil distillation and impurity removal purification equipment according to claim 1 is characterized in that: The thermal cracking mixed oil distillation and impurity removal purification equipment also includes a horizontal steam heat exchanger connected to the activation distillation kettle through the steam outlet, and the horizontal steam heat exchanger is equipped with condensation tubes.
8. The thermal cracking mixed oil distillation and impurity removal purification equipment according to claim 7, characterized in that: The thermal cracking mixed oil distillation and impurity removal purification equipment also includes a cooling water recovery tank connected to the horizontal water vapor heat exchanger.
9. The thermal cracking mixed oil distillation and impurity removal purification equipment according to claim 1, characterized in that: The thermal cracking mixed oil distillation and impurity removal purification equipment also includes a primary condenser connected to the activation distillation kettle through the oil vapor outlet, and a secondary condenser connected to the primary condenser.
10. The thermal cracking mixed oil distillation and impurity removal purification equipment according to claim 9, characterized in that: The thermal cracking mixed oil distillation and impurity removal purification equipment also includes a light oil collection tank connected to the first-level condenser and the second-level condenser.