Novel online vacuum oil refining system for waste rubber and plastic pyrolytic oil

Abstract

The utility model provides a novel online vacuum refined oil system for waste rubber and plastic pyrolytic oil, which belongs to the field of waste rubber and plastic solid waste recovery treatment and comprises a first filter, a vacuum separator, a refined oil conveying and storing component, an impurity condensing component, a backwashing pipeline and a vacuum pump, the first filter is used for filtering impurities in the mixed oil; the vacuum separator is connected with an oil outlet of the first filter through an oil spraying pipeline; one end of the oil spraying pipeline is positioned at the upper part of an inner cavity of the vacuum separator and is provided with an atomizer; the refined oil conveying and storing assembly comprises an oil conveying pipeline which is provided with an oil conveying pump. The utility model solves the technical problem that the oil quality is influenced due to the existence of impurities in the mixed oil collected after thermal cracking, and has the characteristics of being capable of removing the impurities in the mixed oil and improving the purity of the mixed oil.

Description

Technical Field

[0001] The utility model belongs to the field of waste rubber and plastic solid waste recycling and treatment, and in particular relates to a novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil. Background Art

[0002] Waste tires are known as "black pollution" in the industry. Their recycling and treatment technology has always been a global problem and a problem for environmental protection. Every year, a large number of waste tires are scrapped around the world. If these waste tires can be properly handled, the pressure of environmental pollution will be greatly reduced. Furthermore, if these waste tires can be utilized, it will truly realize the possibility of "limited resources, unlimited recycling" and create huge economic value.

[0003] Thermal cracking technology is a common technology for treating waste rubber and plastic. It can not only process waste rubber and plastic, but also the carbon black and high-temperature oil vapor produced by the cracking can be further used as industrial raw materials. After the waste rubber and plastic are cracked in the cracking kettle, the separated high-temperature oil vapor is transported to the catalytic tower through the high-temperature oil vapor output pipeline, and the heavy components and dust are separated in the catalytic tower. Under the action of slight negative pressure, the high-temperature oil vapor continues to move backward to the multi-stage vertical condenser for cooling. The pyrolysis mixed oil cooled by the multi-stage condenser is recovered and stored in the mixed oil temporary storage tank.

[0004] However, the mixed oil collected after thermal cracking contains impurities such as carbon black dust, residual carbon, heavy components, water molecules, etc. If it is not purified, it will seriously affect the quality of the oil and also affect the production efficiency. Utility Model Content

[0005] 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.

[0006] The utility model proposes a novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil, which solves the technical problem that impurities exist in the mixed oil collected after pyrolysis, thereby affecting the quality of the oil product, and has the characteristics of being able to remove impurities in the mixed oil and improve the purity of the mixed oil.

[0007] The utility model provides a novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil, comprising a first filter, a vacuum separator, a refined oil delivery storage component, an impurity condensation component, a backwash pipeline, and a vacuum pump; the first filter is used to filter impurities in the mixed oil; the vacuum separator is connected to the oil outlet of the first filter through an oil injection pipeline, one end of the oil injection pipeline is located at the upper part of the inner cavity of the vacuum separator and an atomizer is provided at the end; the refined oil delivery storage component comprises an oil delivery pipeline, and an oil delivery pump is provided on the oil delivery pipeline; the oil delivery pipeline ... and the oil delivery pipeline is connected to the oil outlet of the first filter through an oil injection pipeline. One end of the pipeline is connected to the bottom oil outlet of the vacuum separator, and the other end is connected to the oil storage tank; the impurity condensation component includes an air pipeline, a condenser, and a cooler; one end of the air pipeline is connected to the top air outlet of the vacuum separator, and the other end is connected to the condenser, and the condenser is connected to the cooler; one end of the backwash pipeline is connected to an oil inlet of the first filter, and the other end is connected to the oil pipeline connected to the oil outlet of the oil pump, and a control valve is provided on the backwash pipeline; the vacuum pump is connected to the cooler.

[0008] In some embodiments, a first oil water separator and a second oil water separator connected in parallel are further included; the oil outlets of the first oil water separator and the second oil water separator are connected to the oil inlet of the first filter.

[0009] In some of the embodiments, the method further includes an oil heater connected to the oil inlets of the first oil water separator and the second oil water separator, and a temperature controller connected to the oil heater.

[0010] In some of the embodiments, a second filter connected to the oil inlet of the oil heater is further included.

[0011] In some of the embodiments, the refined oil delivery and storage assembly further includes a third filter disposed between the oil delivery pump and the oil storage tank, and a control valve disposed between the third filter and the oil storage tank.

[0012] In some embodiments, the condenser includes a shell and a condenser tube located in the shell. The condenser tube is bent, the tube side in the condenser tube is used for the condensate to pass through, and the shell side formed by the shell and the condenser tube is used for the condensation medium to pass through.

[0013] Some of the embodiments further include a circulating water pump and a cooling element connected to the shell.

[0014] In some of the embodiments, the vacuum separator is provided with a liquid level gauge and a pressure gauge.

[0015] In some of the embodiments, a water storage tank is further included which is connected to the water outlets of the first oil product water separator and the second oil product water separator.

[0016] In some of the embodiments, a wastewater collection tank connected to the cooler is also included.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model provides a novel online vacuum refined oil system for pyrolysis oil of waste rubber and plastic. By setting a vacuum separator and utilizing an atomizer, the contact area of ​​the sprayed pyrolysis mixed oil in the vacuum separator is expanded to hundreds of times of the original area, and the evaporation interface is continuously updated, so that the impurities in the oil are quickly evaporated and output by the impurity condensation component under the conditions of low heat, high vacuum, large surface and high pumping speed, and the oil products with impurities removed are output and stored by the refined oil delivery storage component. At the same time, in order to avoid clogging the first filter before the oil products have their impurities removed, a backwashing pipeline is also provided, and the first filter is backwashed by the oil products after the impurities are removed, thereby ensuring the stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 on the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of the structure of a novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil provided by an embodiment of the utility model;

[0021] In the above figures: 1. first filter; 2. vacuum separator; 3. oil pipeline; 4. fuel injection pipeline; 5. atomizer; 6. oil pump; 7. gas pipeline; 8. condenser; 9. cooler; 10. backwash pipeline; 11. vacuum pump; 12. first oil water separator; 13. second oil water separator; 14. oil heater; 15. temperature controller; 16. second filter; 17. third filter; 18. liquid level gauge; 19. water storage tank; 20. wastewater collection tank; 21. oil storage tank. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described and illustrated in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments provided by the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] The utility model embodiment provides a novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil. Figure 1 This is a structural schematic diagram of a novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil according to an embodiment of the utility model. Figure 1 As shown, the system at least includes a first filter 1, a vacuum separator 2, a refined oil delivery storage component, an impurity condensation component, a backwash pipeline 10, and a vacuum pump 11; the first filter 1 is used to filter impurities in the mixed oil; the vacuum separator 2 is connected to the oil outlet of the first filter 1 through an oil injection pipeline 4, one end of the oil injection pipeline 4 is located at the upper part of the inner cavity of the vacuum separator 2 and an atomizer 5 is provided at the end; the refined oil delivery storage component includes an oil delivery pipeline 3, and the oil delivery pipeline 3 is provided with an oil delivery pump 6; one end of the oil delivery pipeline 3 is connected to the oil delivery pipeline 3. The bottom oil outlet of the vacuum separator 2 is connected, and the other end is connected to the oil storage tank 21; the impurity condensation component includes a gas pipeline 7, a condenser 8, and a cooler 9; one end of the gas pipeline 7 is connected to the top gas outlet of the vacuum separator 2, and the other end is connected to the condenser 8, and the condenser 8 is connected to the cooler 9; one end of the backwash pipeline 10 is connected to an oil inlet of the first filter 1, and the other end is connected to the oil pipeline 3 connected to the oil outlet of the oil pump 6, and a control valve is provided on the backwash pipeline 10; the vacuum pump 11 is connected to the cooler 9. The novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil is provided with a vacuum separator 2 and uses an atomizer 5. The contact area of ​​the sprayed pyrolysis mixed oil in the vacuum separator 2 is expanded to hundreds of times of the original area, and the evaporation interface is continuously updated, so that the impurities in the oil are quickly evaporated and output by the impurity condensation component under the conditions of low heat, high vacuum, large surface, and high pumping speed. The oil product with impurities removed is output and stored through the refined oil delivery storage component. At the same time, in order to avoid the first filter 1 being blocked by the oil product before the impurities are removed, a backwashing pipeline 10 is also provided, and the first filter 1 is backwashed with the oil product after the impurities are removed, thereby ensuring the stable operation of the system. In some embodiments, a liquid level meter 18 and a pressure gauge are provided on the vacuum separator 2.

[0024] It further includes a first oil water separator 12 and a second oil water separator 13 connected in parallel; the oil outlets of the first oil water separator 12 and the second oil water separator 13 are connected to the oil inlet of the first filter 1. In addition, it also includes an oil heater 14 connected to the oil inlets of the first oil water separator 12 and the second oil water separator 13, a temperature controller 15 connected to the oil heater 14, a second filter 16 connected to the oil inlet of the oil heater 14, and a water storage tank 19 connected to the water outlets of the first oil water separator 12 and the second oil water separator 13.

[0025] A vacuum pump 11 is provided at the rear of the above system. The vacuum pump 11 extracts the air in the vacuum separator 2 to form a vacuum. The oil stored in the temporary storage tank of the mixed oil is transported to the system through the oil inlet pipeline under the action of atmospheric pressure. At the entrance of the oil inlet pipeline, an oil automatic interlock control valve is provided to control the inlet flow of the mixed oil. The transported mixed oil first enters the second filter 16. A filter screen is provided in the second filter 16, which is mainly used to filter out carbon black particles and dust in the mixed oil. The mixed oil that has filtered out carbon black particles and dust in the oil enters the oil heater 14 for heating. The oil heater 14 is provided with a temperature controller 15. A drain valve is provided at the lower part of the first filter 1 to discharge impurities after the initial filtration.

[0026] When starting work, turn the temperature control knob to the working temperature, so that the oil heater 14 starts to heat the oil. When the temperature reaches the set value, the temperature controller 15 will automatically shut down to prevent the quality of the oil from being affected by the excessively high heating temperature. The heated pyrolysis mixed oil contains varying amounts of water, and the water molecules in the oil need to be removed first. The oil enters the oil water separator set in the next process. On the main pipeline of the oil inlet, an upper and lower layer of oil water separators (i.e., the first oil water separator 12 and the second oil water separator 13) are set in parallel. The separated water is collected through the lower pipeline of the separator, and the separated oil is sent to the next process through the main pipeline. Among them, the first oil water separator 12 is set at the upper part of the second oil water separator 13, and the pyrolysis mixed oil enters the first oil water separator 12 from the pipeline on the left, and the oil and water are separated under the action of gravity. After the oil is separated from the water, it is discharged from the outlet pipeline. The polluted water separated from the oil is discharged downward into the water storage tank 19 through the drainage pipeline provided at the bottom of the first oil product water separator 12. In order to prevent the separated polluted water from flowing back, a first oil product water separator 12 isolation valve is also provided on the drainage pipeline. The second oil product water separator 13 is provided at the bottom of the first oil product water separator 12. The pyrolysis mixed oil enters the second oil product water separator 13 from the pipeline on the left side. The oil and water are separated under the action of gravity. After the oil and water are separated, they are discharged from the outlet pipeline. The polluted water separated from the oil is discharged downward into the water storage tank 19 through the drainage pipeline provided at the bottom of the second oil product water separator 13. The second oil product water separator 13 is also provided with an isolation valve, and its main function is to prevent the separated polluted water from flowing back. A control valve is also provided at the bottom of the second oil product water separator 13, and a gas seepage valve is provided on the water storage tank 19 to discharge the gas in the water storage tank 19. The polluted water discharged from the first oil product water separator 12 and the second oil product water separator 13 is all discharged into the water storage tank 19 for storage. A sewage valve is arranged at the lower right part of the water storage tank 19 , and a wastewater external transmission valve is arranged on the left side of the water storage tank 19 .

[0027] The dehydrated pyrolysis mixed oil passes through the secondary filter cut-off valve and enters the first filter 1 to perform secondary filtration on the impurities in the oil. The oil inlet of the first filter 1 is arranged on its left side. A backwash oil outlet valve is arranged at the lower part of the first filter 1 to realize the backwashing of the first filter 1. The diaphragm drive structure inside it can smoothly change the flow direction of the medium to prevent the first filter 1 from overflowing or the oil from mixing with the wastewater. The backwash pressure protection solenoid valve is arranged on the oil pipeline 3. When the pressure difference of the first filter 1 exceeds the preset value, the automatic cleaning process will start to clean the surface of the filter. The oil outlet of the first filter 1 is arranged on its right side. An on-site pressure gauge is arranged on the main oil pipeline. In order to balance the pressure at both ends of the main oil pipeline, a bypass oil pipeline bypass valve is also arranged on the main oil pipeline. At the lower part of the bypass valve, a bypass oil supply solenoid valve is arranged to balance the pressure at both ends of the pipeline and protect the pipeline.

[0028] The oil outputted by the first filter 1 enters the vacuum separator 2 after passing through the bypass valve, and the contact area of ​​the pyrolysis mixed oil sprayed in the vacuum separator 2 is expanded to hundreds of times of the original area through the spray pipe atomizer 5 of the vacuum separator 2, and the evaporation interface is constantly updated, so that the impurities in the oil are quickly evaporated and discharged by the vacuum system under the conditions of low heat, high vacuum, large surface and high pumping speed. An oil pump oil level automatic control level gauge 18 is arranged on the left tank body of the vacuum separator 2, which is used to control the liquid level in the vacuum separator 2. A true negative pressure gauge is arranged on the upper left side of the vacuum separator 2, and the spray pipe atomizer 5 of the vacuum separator 2 enters from the left tank body, atomizes the oil entering the vacuum separator 2, and sprays it onto the reactor. The vacuum pipe outlet is arranged on the upper right side of the tank body, and an exhaust valve and a vacuum pipe vacuum gauge are arranged on the pipeline to detect the vacuum degree in the vacuum separator 2 in real time. The oil outlet of the vacuum separator 2 is arranged at the lower part of the tank body, connected to the oil pipeline, and a control valve is arranged on the oil outlet pipeline.

[0029] In some embodiments, the refined oil delivery and storage assembly further includes a third filter 17 disposed between the oil pump 6 and the oil storage tank 21, and a control valve disposed between the third filter 17 and the oil storage tank 21. Regarding the refined oil delivery and storage assembly, the oil discharged from the vacuum separator 2 enters the oil pipeline 3, and a single oil inlet valve is drawn on the right side of the oil pipeline 3, and the refined qualified oil is pumped into the oil storage tank 21 by the oil pump 6. A pressure controller and an on-site pressure gauge for the external oil pipeline are provided on the oil pipeline 3 to detect the pipeline pressure. An oil refining filter (i.e., the third filter 17) is also provided on the oil pipeline 3, and a drain valve is provided at the bottom of the oil refining filter. A control valve and an external oil pipeline sampling valve are provided at the oil outlet of the oil pipeline 3, and an oil drain port of the oil storage tank 21 is provided on the oil storage tank 21.

[0030] The condenser 8 in the impurity condensation assembly includes a shell, and a condenser tube located in the shell. The condenser tube is bent, and the tube side in the condenser tube is used for the condensate to pass through. The shell side surrounded by the shell and the condenser tube is used for the condensation medium to pass through. It further includes a circulating water pump and a cooling element connected to the shell, and a wastewater collection tank 20 connected to the cooler 9. Among them, the filtered water vapor discharged by the vacuum separator 2 is cooled by the condenser 8, and a gas permeation valve and a cooling element are arranged above the condenser 8, and the circulating water pump is used for circulation. The water outlet of the condenser 8 is arranged at the lower right part and connected to the water inlet of the cooler 9. In order to ensure that the filtered water vapor is completely cooled, a cooler 9 is arranged at the lower part of the condenser 8, and a vacuum pumping pipeline is arranged on the left side of the cooler 9. A vacuum control valve is arranged on the vacuum pumping pipeline, and the outlet of the vacuum pump 11 is connected to it. A thermometer is arranged at the upper right part of the cooler 9, and a cut-off valve is arranged at the lower part of the cooler 9. The discharged cooling wastewater enters the wastewater collection tank 20. An air seepage valve is arranged at the upper part of the wastewater collection tank 20, and a sewage discharge valve is arranged at the lower right part of the tank body.

[0031] The working process of the new online vacuum refined oil system for waste rubber and plastic pyrolysis oil is as follows:

[0032] By setting up the vacuum separator 2 and using the atomizer 5, the contact area of ​​the sprayed pyrolysis mixed oil in the vacuum separator 2 is expanded to hundreds of times of the original area, and the evaporation interface is constantly updated, so that the impurities in the oil are quickly evaporated and output by the impurity condensation component under the conditions of low heat, high vacuum, large surface and high pumping speed, and the oil products with impurities removed are output and stored through the refined oil delivery storage component. At the same time, in order to avoid the first filter 1 being blocked by the oil products before the impurities are removed in the first filter 1, a backwashing pipeline 10 is also provided, and the first filter 1 is backwashed by the oil products after the impurities are removed, thereby ensuring the stable operation of the system.

[0033] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil, characterized in that: It includes a first filter, wherein the first filter is used to filter impurities in the mixed oil; A vacuum separator, wherein the vacuum separator is connected to the oil outlet of the first filter through an oil injection pipeline, one end of the oil injection pipeline is located at the upper part of the inner cavity of the vacuum separator and an atomizer is provided at the end; A refined oil delivery and storage assembly, wherein the refined oil delivery and storage assembly comprises an oil delivery pipeline, wherein an oil delivery pump is arranged on the oil delivery pipeline; one end of the oil delivery pipeline is connected to the bottom oil outlet of the vacuum separator, and the other end is connected to the oil storage tank; An impurity condensation component, the impurity condensation component comprises a gas pipeline, a condenser, and a cooler; one end of the gas pipeline is connected to the top gas outlet of the vacuum separator, and the other end is connected to the condenser, and the condenser is connected to the cooler; A backwash pipeline, one end of which is connected to an oil inlet of the first filter, and the other end of which is connected to the oil pipeline connected to the oil outlet of the oil pump, and a control valve is provided on the backwash pipeline; A vacuum pump is connected to the cooler.

2. The novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil according to claim 1 is characterized in that: It also includes a first oil water separator and a second oil water separator connected in parallel; the oil outlets of the first oil water separator and the second oil water separator are connected to the oil inlet of the first filter.

3. The novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil according to claim 2 is characterized in that: It also includes an oil heater connected to the oil inlets of the first oil water separator and the second oil water separator, and a temperature controller connected to the oil heater.

4. The novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil according to claim 3 is characterized in that: It also includes a second filter connected to the oil inlet of the oil heater.

5. The novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil according to claim 1 is characterized in that: The refined oil delivery and storage assembly further includes a third filter disposed between the oil delivery pump and the oil storage tank, and a control valve disposed between the third filter and the oil storage tank.

6. The novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil according to claim 1 is characterized in that: The condenser includes a shell and a condenser tube located in the shell. The condenser tube is bent. The tube side in the condenser tube is used for the passage of the condensate to be condensed. The shell side formed by the shell and the condenser tube is used for the passage of the condensation medium.

7. The novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil according to claim 6 is characterized in that: It also includes a circulating water pump and a cooling element connected to the shell.

8. The novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil according to claim 1 is characterized in that: The vacuum separator is provided with a liquid level gauge and a pressure gauge.

9. The novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil according to claim 2 is characterized in that: It also includes a water storage tank connected to the water outlets of the first oil product water separator and the second oil product water separator.

10. The novel online vacuum refined oil system for waste rubber and plastic pyrolysis oil according to claim 1 is characterized in that: Also included is a wastewater collection tank connected to the cooler.

Images