CN212532869U - Integrated fixed bed reactor for co-pyrolysis of biomass and waste plastic - Google Patents
Integrated fixed bed reactor for co-pyrolysis of biomass and waste plastic Download PDFInfo
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- CN212532869U CN212532869U CN202021261364.2U CN202021261364U CN212532869U CN 212532869 U CN212532869 U CN 212532869U CN 202021261364 U CN202021261364 U CN 202021261364U CN 212532869 U CN212532869 U CN 212532869U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
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Abstract
The utility model provides an integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics, which comprises a first pyrolysis bin, a second pyrolysis bin and a catalytic bin; the first pyrolysis bin is positioned at the upper part and comprises a first bin gate, a first material tray, a first outlet pipeline and a first heater for heating the first pyrolysis bin; the second pyrolysis bin is positioned in the middle and comprises a second bin door, a second material tray, a second outlet pipeline and a second heater for heating the second pyrolysis bin; the catalytic bin is positioned at the lower part and comprises a third inlet pipeline, a third inlet, a catalytic reactor, a third outlet and a third bin gate; the first outlet conduit, the second outlet conduit and the third inlet conduit provided with the mixer are connected. The reactor adopts an integrated structure, and has simple structure and high space utilization rate; and the monitoring instrument, the material inlet and the product outlet are positioned on the same side, so that the operation, the monitoring and the connection of downstream process equipment are very convenient.
Description
Technical Field
The utility model belongs to the chemical industry field, in particular to an integrated fixed bed reactor for pyrolysis of living beings and waste plastics altogether.
Background
With the gradual depletion of fossil fuels, the development of renewable alternative fuels and the circular economy of petrochemicals becomes a hot spot for people to research energy. For example, in terms of alternative fuels, biomass can be used as a renewable energy source, which can be directly converted into carbon-containing liquid fuels by pyrolysis methods, i.e., biomass pyrolysis oil; in the aspect of recycling economy, waste plastics can also be decomposed into small-molecular carbon-containing liquid fuels, namely plastic pyrolysis oil, by a pyrolysis method.
In general, the primary oil directly produced by pyrolysis has obvious defects in physical and chemical properties, and must be modified and refined to improve the quality of the pyrolysis oil. NPSC (Non-thermal Plasma Synergistic Catalysis) is a relatively advanced pyrolysis oil refining method in the prior art, and the gaseous pyrolysis oil is modified and refined under the relatively low-temperature environment through the combined action of Plasma and a catalyst.
However, the pyrolysis and refining apparatus of the prior art is generally a split type assembly structure, which has a large volume and a complicated connection between the apparatuses, so that the space utilization rate is low and the operation and monitoring are inconvenient.
SUMMERY OF THE UTILITY MODEL
In view of the above defects in the prior art, the present invention provides an integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics, which adopts an integrated structure, and has a simple structure and a high space utilization rate; and the monitoring instrument, the material inlet and the product outlet are positioned on the same side, so that the operation, the monitoring and the connection of downstream process equipment are very convenient.
In order to achieve the aim, the utility model provides an integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics, which comprises a first pyrolysis bin, a second pyrolysis bin and a catalytic bin; wherein the content of the first and second substances,
the first pyrolysis bin is positioned at the upper part of the reactor and comprises a first bin gate, a first material tray, a first outlet pipeline and a first heater for heating the first pyrolysis bin;
the second pyrolysis bin is positioned in the middle of the reactor and comprises a second bin gate, a second material tray, a second outlet pipeline and a second heater for heating the second pyrolysis bin;
the catalytic bin is positioned at the lower part of the reactor and comprises a third inlet pipeline, a third inlet, a catalytic reactor, a third outlet and a third bin gate;
the first outlet pipeline, the second outlet pipeline and the third inlet pipeline are connected; a mixer is disposed in the third inlet conduit.
Further, the first outlet conduit, the second outlet conduit and the third inlet conduit are located at the first side of the reactor; the first bin gate, the second bin gate, and the third bin gate are located on a second side opposite the first side.
Further, all be equipped with temperature sensor and pressure sensor in first pyrolysis storehouse, the second pyrolysis storehouse and the catalysis storehouse.
Further, the first heater and the second heater are both heating wire heaters, and the maximum heating temperature is more than 600 ℃, preferably more than 1000 ℃.
Further, the first heater is linked with the temperature sensor in the first pyrolysis bin, and the second heater is linked with the temperature sensor in the second pyrolysis bin, so that the temperature in the first pyrolysis bin and the temperature in the second pyrolysis bin can be automatically maintained to be close to a set value. For example, when the temperature displayed by the temperature sensor in the first pyrolysis bin is larger than the set value, the power of the first heater is reduced; when the temperature displayed by the temperature sensor in the first pyrolysis chamber is less than the set value, the power of the first heater is increased, so that the temperature in the first pyrolysis chamber is always kept near the set value.
Furthermore, the first material tray and the second material tray are used for placing biomass and waste plastic to be pyrolyzed respectively. Wherein, the pyrolysis temperature is higher to be placed in the first charging tray, and the pyrolysis temperature is lower to be placed in the second charging tray.
Further, the mixer is a rotary gas mixer.
Further, the catalytic reactor is an NPSC catalytic reactor.
Further, the catalytic reactor is installed in the catalytic cabin in an embedded manner through the third cabin door, which makes the installation, the disassembly and the replacement of the catalytic reactor very convenient.
Further, the third outlet is connected to downstream process equipment, for example, the third outlet is connected to a condenser, a vacuum pump, etc. in turn. Wherein, the condenser is used for cooling and condensing the high-temperature gaseous pyrolysis oil into liquid pyrolysis oil. The vacuum pump is used for vacuumizing the whole reaction system and maintaining a certain negative pressure, so that the reaction is carried out under the negative pressure.
Further, the vacuum pump links with the pressure sensor in first pyrolysis storehouse, second pyrolysis storehouse and the catalysis storehouse to can maintain the vacuum in first pyrolysis storehouse, second pyrolysis storehouse and catalysis storehouse near the setting value. For example, when the minimum pressure values displayed by the pressure sensors in the first pyrolysis bin, the second pyrolysis bin and the catalytic bin are greater than a set value, the power of the vacuum pump is increased; and when the maximum pressure values displayed by the pressure sensors in the first pyrolysis bin, the second pyrolysis bin and the catalysis bin are less than a set value, reducing the power of the vacuum pump.
Further, the reactor also comprises meters for displaying process parameters (e.g. temperature, pressure, etc. inside the reactor), which are located on the second side. This arrangement allows the operations of the reactor (e.g., opening or closing the door, loading or unloading materials, installing or removing the catalytic reactor, etc.), monitoring (e.g., reading data regarding temperature, pressure, etc. within the reactor), and connecting downstream process equipment to be performed on the same side, which is convenient. Like this, the first side of equipment can be towards corner or wall, because all operations can all be accomplished at the second side, need not to wind the first side and operate, therefore the arrangement mode of equipment is nimble, and space utilization is high.
The utility model discloses an integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics, which adopts an integrated structure, has simple structure and high space utilization rate; and the monitoring instrument, the material inlet and the product outlet are positioned on the same side of the equipment, so that the operation, the monitoring and the connection of downstream process equipment are very convenient.
Drawings
Fig. 1 is a schematic structural diagram of an integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics according to a preferred embodiment of the present invention.
Detailed Description
The following embodiments of the present invention will be described in detail, and the following embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
In a preferred embodiment, the integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics of the present invention comprises a first pyrolysis bin 1, a second pyrolysis bin 2 and a catalytic bin 3; wherein the content of the first and second substances,
the first pyrolysis bin 1 is positioned at the upper part of the reactor and comprises a first bin gate 11, a first material tray 12, a first outlet 14, a first outlet pipeline 15 and a first heater 13 for heating the first pyrolysis bin 1;
the second pyrolysis bin 2 is positioned in the middle of the reactor and comprises a second bin gate 21, a second tray 22, a second outlet 24, a second outlet pipeline 25 and a second heater 23 for heating the second pyrolysis bin 2;
the catalytic bin 3 is located in the lower part of the reactor and comprises a third inlet pipe 31, a third inlet 33, a catalytic reactor 34 and a third outlet 35;
the first outlet conduit 15, the second outlet conduit 25 and the third inlet conduit 31 are connected; a mixer is arranged in the third inlet conduit 31.
The first outlet conduit 15, the second outlet conduit 25 and the third inlet conduit 31 are located at the first side of the reactor; the first door 11, the second door 21, and the third door 36 are located at a second side opposite to the first side.
Temperature sensors and pressure sensors (not shown in the figure) are arranged in the first pyrolysis bin 1, the second pyrolysis bin 2 and the catalysis bin 3.
The first heater 13 and the second heater 23 are both heating wire heaters, and the maximum heating temperature is more than 600 ℃. The first heater 13 is linked with the temperature sensor in the first pyrolysis chamber, and the second heater 23 is linked with the temperature sensor in the second pyrolysis chamber, so that the temperatures in the first pyrolysis chamber 1 and the second pyrolysis chamber 2 can be automatically maintained around the set value.
The first material tray 12 and the second material tray 22 are used for placing biomass and waste plastics to be pyrolyzed respectively. Wherein the first material 12 is placed with a higher pyrolysis temperature and the second material tray 22 is placed with a lower pyrolysis temperature.
The mixer 32 is a rotary gas mixer.
Catalytic reactor 34 is an NPSC catalytic reactor that is mounted in an embedded manner in catalytic silo 3 by a third silo door 36.
The third outlet 35 is connected to a downstream condenser, vacuum pump, etc. Wherein, the condenser is used for cooling and condensing the high-temperature gaseous pyrolysis oil into liquid pyrolysis oil. The vacuum pump is used for vacuumizing the whole reaction system and maintaining a certain negative pressure, so that the reaction is carried out under the negative pressure.
The vacuum pump links with the pressure sensor in first pyrolysis storehouse 1, second pyrolysis storehouse 2 and catalysis storehouse 3 to can maintain the vacuum in first pyrolysis storehouse 1, second pyrolysis storehouse 2 and catalysis storehouse 3 near the setting value.
The reactor further comprises meters (not shown in the figure) for displaying process parameters, such as temperature, pressure, etc. inside the reactor, which meters are located on the first side.
The method for preparing the pyrolysis oil by co-pyrolyzing 5kg of rape straws and 5kg of polyethylene waste plastics by using the integrated fixed bed reactor for co-pyrolyzing biomass and waste plastics in the embodiment comprises the following steps:
(1) opening a first bin gate 11, placing polyethylene waste plastic particles with the particle size of about 0.5mm on a first material tray 12, and closing the first bin gate 11; opening the second bin gate 21, placing 5kg of rape straw particles with the particle size of about 0.5mm on the second material tray 22, and closing the second bin gate 21;
(2) opening the condenser, and setting the condensing temperature to be-10 ℃; turning on a vacuum pump, and setting the vacuum degree to be 100 Pa;
(3) turning on the first heater 13, setting the heating temperature to 550 ℃, and setting the heating rate to 30 ℃/min; turning on the second heater 23, setting the heating temperature at 500 ℃ and the heating rate at 25 ℃/min;
(4) adjusting the radio frequency discharge power of the NPSC catalytic reactor 34 to 150W;
(5) after the reaction is carried out for about 1 hour, the condensation products in the condenser are not increased any more, and the first heater 13, the second heater 23, the radio frequency discharge device of the catalytic reactor 34 and the vacuum pump are closed; and when the temperature and the pressure in the first pyrolysis bin 1, the second pyrolysis bin 2 and the catalysis bin 3 are recovered to be the room temperature and the normal pressure, the condenser is closed.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. An integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics is characterized by comprising a first pyrolysis bin, a second pyrolysis bin and a catalytic bin; wherein the content of the first and second substances,
the first pyrolysis bin is positioned at the upper part of the reactor and comprises a first bin gate, a first material tray, a first outlet pipeline and a first heater for heating the first pyrolysis bin;
the second pyrolysis bin is positioned in the middle of the reactor and comprises a second bin gate, a second material tray, a second outlet pipeline and a second heater for heating the second pyrolysis bin;
the catalytic bin is positioned at the lower part of the reactor and comprises a third inlet pipeline, a third inlet, a catalytic reactor, a third outlet and a third bin gate;
the first outlet conduit, the second outlet conduit and the third inlet conduit are connected; a mixer is arranged in the third inlet pipeline.
2. The integrated fixed bed reactor for the co-pyrolysis of biomass and waste plastics of claim 1, wherein the first outlet conduit, the second outlet conduit and the third inlet conduit are located at a first side of the reactor; the first bin gate, the second bin gate, and the third bin gate are located on a second side opposite the first side.
3. The integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics according to claim 1, wherein the first pyrolysis chamber, the second pyrolysis chamber and the catalytic chamber are each provided with a temperature sensor and a pressure sensor.
4. The integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics according to claim 3, wherein the first heater and the second heater are both heating wire heaters, and the maximum heating temperature is more than 600 ℃.
5. The integrated fixed bed reactor for co-pyrolysis of biomass and waste plastic of claim 4, wherein the first heater is in linkage with a temperature sensor in the first pyrolysis bin and the second heater is in linkage with a temperature sensor in the second pyrolysis bin.
6. The integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics according to claim 1, wherein the first tray and the second tray are used for placing biomass and waste plastics to be pyrolyzed respectively; the first material tray is arranged at a higher pyrolysis temperature, and the second material tray is arranged at a lower pyrolysis temperature.
7. The integrated fixed bed reactor for the co-pyrolysis of biomass and waste plastics of claim 1, wherein the mixer is a rotary gas mixer.
8. The integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics of claim 1, wherein the catalytic reactor is an NPSC catalytic reactor.
9. The integrated fixed bed reactor for the co-pyrolysis of biomass and waste plastics of claim 1, wherein the catalytic reactor is installed in the catalytic silo in an embedded manner through the third silo door.
10. The integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics according to claim 1, wherein the third outlet is connected with a condenser and a vacuum pump in sequence.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113717550A (en) * | 2021-08-25 | 2021-11-30 | 中策橡胶集团有限公司 | Device and method for preparing environment-friendly carbon black by pyrolyzing waste tire rubber particles |
| CN115572613A (en) * | 2022-10-25 | 2023-01-06 | 山东理工大学 | Integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics |
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2020
- 2020-07-02 CN CN202021261364.2U patent/CN212532869U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113717550A (en) * | 2021-08-25 | 2021-11-30 | 中策橡胶集团有限公司 | Device and method for preparing environment-friendly carbon black by pyrolyzing waste tire rubber particles |
| CN115572613A (en) * | 2022-10-25 | 2023-01-06 | 山东理工大学 | Integrated fixed bed reactor for co-pyrolysis of biomass and waste plastics |
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