CN109321261A - A kind of multi-mode microwave pyrolysis installation that vacuum degree can be constant - Google Patents
A kind of multi-mode microwave pyrolysis installation that vacuum degree can be constant Download PDFInfo
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- CN109321261A CN109321261A CN201811159251.9A CN201811159251A CN109321261A CN 109321261 A CN109321261 A CN 109321261A CN 201811159251 A CN201811159251 A CN 201811159251A CN 109321261 A CN109321261 A CN 109321261A
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- constant
- chip microcontroller
- surge tank
- vacuum degree
- mode microwave
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
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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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- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses a kind of multi-mode microwave pyrolysis installation that vacuum degree can be constant, is related to biomass microwave pyrolysis plant technical field.It includes vacuum pump, relay, single-chip microcontroller, pressure sensor, micro-wave oven, flange, quartz ampoule and surge tank, vacuum pump is connect with surge tank, surge tank and flanged joint, quartz ampoule is equipped in micro-wave oven, by flange seal, surge tank is interior to be equipped with pressure sensor for the open end of quartz ampoule, pressure sensor is connect with single-chip microcontroller, relay is connect with single-chip microcontroller, and single-chip microcontroller controls the open or closed of vacuum-pump power supply by relay according to the pressure size of reaction chamber.The present invention solves the problems, such as that vacuum degree is constant, makes up the defect of existing apparatus, improve the absorption property of activated carbon from activated sludge and to maintain equipment safety, orient activity of conversion charcoal for biomass and provide economic, efficient equipment by being transformed to household multi-mode microwave furnace.
Description
Technical field
The present invention relates to biomass microwave pyrolysis plant technical field, multi-mode microwave that especially a kind of vacuum degree can be constant
Pyrolysis installation.
Background technique
Microwave is electromagnetic wave of the wavelength between 1mm-1m, and between infrared light and radio wave, frequency exists
Between 300MHz-300GHz, routine use is typically chosen 2.45GHz, is widely used in the necks such as communication, monitoring and medical living
Domain.Microwave has the characteristics that selectivity heats, and since the ability of different material absorbing microwaves has very big difference, is characterized with tan δ
Different material absorbs the ability of microwave, and tan δ value is bigger, and the performance for indicating the material absorbing microwave is better, otherwise tan δ is too small
Substance shares microwave heating with regard to discomfort.The selectivity of microwave, which heats, can be used to targetedly heat a certain substance, and other
Substance is not interfered by microwave heating.Traditional heating means be made by heat transfer material surface first be heated be transmitted to again in
Portion, uneven heating is even, low efficiency.And microwave heating is to cause molecular motion collision generation friction by generating alternately radiation mode
Heat elevates the temperature, and heating substance from inside to outside, homogeneous heating, speed are fast.Microwave heating simultaneously is easily controllable, is being not required to
Microwave power supply is closed when heating, heated material can stop heating up at once.
Research China that vacuum and microwave technology combine starts late compared to foreign countries, using starting from the beginning of the seventies in last century
Phase is mainly used in the drying of food, medicine, chemical engineering of materials etc., in field of pyrolysis using less.Have at present
Experimental vacuum heater, such as microwave-assisted vacuum horizontal charcoal carbonizing apparatus (105131985 A of CN), microwave vacuum
The vacuum evacuation device (206113674 U of CN) and a kind of vacuum microwave heating equipment (206320994 U of CN) of smelting furnace) etc. set
The standby field of microwave heating all referred under vacuum condition, but these equipment do not account for the constant problem of vacuum degree.And
The vacuum degree of maintenance system is very crucial, biomass fermentation to the performance of control activated carbon product in biomass pyrolysis process
Volatile materials can be constantly precipitated in raw pyrolytic reaction, and the volatile materials that the vacuum degree of maintenance system is conducive to generate is immediately from anti-
It answers in chamber and removes, avoid the hole of blocking active carbon, help to improve the absorption property of active carbon.In addition, working as reaction chamber internal pressure
Power increase to a certain extent when, will lead to gas and wash flange open, cause security risk.Therefore keeping vacuum degree constant is to be badly in need of solution
Certainly the problem of.
Summary of the invention
To solve the problems, such as that vacuum degree is constant, the defect of existing apparatus is made up, the present invention passes through to household multi-mode microwave furnace
It is transformed, a kind of multi-mode microwave pyrolysis installation that vacuum degree can be constant is provided, improves the absorption property of activated carbon from activated sludge simultaneously
To maintain equipment safety orients activity of conversion charcoal for biomass and provides economic, efficient equipment.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of multi-mode microwave pyrolysis installation that vacuum degree can be constant, it includes vacuum pump, relay, single-chip microcontroller, pressure biography
Sensor, micro-wave oven, flange, quartz ampoule and surge tank, vacuum pump are connect with surge tank, surge tank and flanged joint, in micro-wave oven
Equipped with quartz ampoule, by flange seal, surge tank is interior to be equipped with pressure sensor, pressure sensor and single-chip microcontroller for the open end of quartz ampoule
Connection, relay are connect with single-chip microcontroller, and single-chip microcontroller controls vacuum-pump power supply by relay according to the pressure size of reaction chamber
It is open or closed.
Further, pressure signal is converted into electric signal and is transmitted to single-chip microcontroller by pressure sensor, and single-chip microcontroller is received from pressure
The electric signal of force snesor is handled, and the power supply that corresponding signal carrys out open or closed vacuum pump to relay is exported.
Further, wiring board is connected between relay and vacuum pump.
Further, the inlet and outlet at surge tank both ends are equipped with check valve.
Further, quartz ampoule be open at one end, the closed straight tube of the other end, wherein closed end in microwave cavity body,
Open end is outwardly by flange seal.
Further, single-chip microcontroller concatenation character liquid crystal display, current pressure values in real-time display reaction chamber.
Further, pressure limit is set on single-chip microcontroller.
The utility model has the advantages that
1. the present invention is constant using single-chip microcontroller control vacuum degree, so that stable reaction conditions, improve biomass active
The performance and yield of charcoal.
2. the present invention can adjust vacuum degree using the structure vacuumized, so that preparation condition can easily be accommodated, control reaction
Intracavitary pressure is constant, the stability of to maintain equipment operation.
3. the present invention installs check valve in the inlet and outlet of surge tank, can solve closing vacuum pump after reaction causes to follow
Ring aqueous reflux returns the problem of reaction chamber.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the multi-mode microwave pyrolysis installation that vacuum degree of the present invention can be constant；
In figure: 1- vacuum pump；2- wiring board；3- relay；4- character liquid crystal screen；5- single-chip microcontroller；6- pressure sensor；7-
Check valve；8- micro-wave oven；9- flange；10- quartz ampoule；11- surge tank.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
The present invention proposes a kind of multi-mode microwave pyrolysis installation that vacuum degree can be constant, as shown in Figure 1, it include vacuum pump 1,
Wiring board 2, relay 3, character liquid crystal screen 4, single-chip microcontroller 5, pressure sensor 6, check valve 7, micro-wave oven 8, flange 9, quartz ampoule
10 and surge tank 11, vacuum pump 1 connect with surge tank 11, surge tank 11 is connect with flange 9, quartz ampoule 10 is equipped in micro-wave oven 8,
The opening of quartz ampoule 10 is sealed by flange 9.The inlet and outlet at 11 both ends of surge tank are equipped with check valve 7, and vacuum pump 1 closes in order to prevent
Aqueous reflux is recycled when closing.Pressure sensor 6 is equipped in surge tank 11, pressure sensor 6 is connect with single-chip microcontroller 5, by pressure signal
It is converted into electric signal.Relay 3 is connect with single-chip microcontroller 5, the data of processing is transmitted to relay 3, relay 3 and wiring board 2 connect
It connects, controls the disconnection of 1 power supply of vacuum pump, character liquid crystal screen 4 is connect with single-chip microcontroller 5, can real-time display reaction chamber current pressure values.
The micro-wave oven 8 of household is equipped with fire door, and handle is equipped on the right side of fire door, and 8 right panel of micro-wave oven is equipped with time and function
Rate rotary switch.The present invention opens a circular hole on 8 rear panel of micro-wave oven of household, is pacified in 8 cavity of micro-wave oven by the circular hole
Quartz ampoule 10 closed at one end is filled, which closes one end in 8 inside cavity of micro-wave oven.
Micro-wave oven 8 is used as microwave rf generator, tranmitting frequency 2.45GHz, and quartz ampoule 10 is reaction chamber system, vacuum pump
1 i.e. vacuum system.
10 thermochemical property of quartz ampoule is stablized, and various mechanisms and physics chemical action are withstood, thus can be with
The loss for reducing heat in biomass carbonated and activation process, enables substance to be absorbed into more heats.
Quartz ampoule 10 is straight tube open at one end, closed at one end.Wherein closed end is in 8 cavity of micro-wave oven, open end court
External application flange 9 seals.
One surge tank 11, one pressure sensor 6 of inside installation are set between vacuum pump 1 and flange 9.Surge tank 11
Pressure in interior pressure and reaction chamber is consistent.
The pressure value (pressure limit) that can need to keep by button manual setting on single-chip microcontroller 5.
The inlet and outlet installation check valve 7 of surge tank 11 causes quartz ampoule 10 broken to avoid water that from being back in reaction chamber
It splits.
Concatenation character liquid crystal display 4 on single-chip microcontroller 5, can show the pressure in current reaction chamber.
Program is write with C-language Programming Design, downloading program to single-chip microcontroller 5 is run.
Carrying out practically: with the progress of microwave reaction in quartz ampoule 10, constantly release gas, overpressure is increased, pressure
Sensor 6 is experienced pressure signal and is spread out of in electrical signal form.Single-chip microcontroller 5 receives the electric signal that pressure sensor 6 transmits, and carries out journey
The processing of sequence outputs signal to relay 3, to disconnect the electricity of vacuum pump 1 when reacting cavity pressure greater than setup pressure value
Source；When reacting cavity pressure lower than setup pressure value, electric signal is passed to single-chip microcontroller 5 again by pressure sensor 6, runs journey
After sequence, relay 3 is outputed signal to, reconnects power supply, vacuum pump 1 is run again.
It is for a more detailed description to the present invention that active carbon example is prepared below with reference to specific biomass.
Embodiment:
Multi-mode microwave pyrolysis installation that can be constant using vacuum degree of the invention, biomass select waste cotton slag as forerunner
Body, phosphoric acid make activator, and ferrous sulfate makees auxiliary agent.Waste cotton slag is dried for 24 hours at 105 DEG C, weighs 4g waste cotton slag and 2g ferrous sulfate
It is mixed with dipping 24 hours, fixed microwave power 700W, microwave irradiation time 12min, phosphoric acid concentration 60%, impregnating ratio 1:3, setting
Different initial depressions, and keep its constant by the control of single-chip microcontroller 5, initial depression is probed into active carbon yield and iodine number
It influences, experimental data see the table below 1.
The influence of 1 initial depression of table
Comparative example:
Control experiment is done using conventional microwave pyrolysis installation preparation waste cotton slag active carbon, equally selects waste cotton slag as forerunner
Body, phosphoric acid make activator, and ferrous sulfate makees auxiliary agent.Waste cotton slag is dried for 24 hours at 105 DEG C, weighs 4g waste cotton slag and 2g ferrous sulfate
It is mixed with dipping 24 hours, fixed microwave power 700W, microwave irradiation time 12min, phosphoric acid concentration 60%, impregnating ratio 1:3, setting
Different initial depressions, initial depression on active carbon yield and iodine number influence experimental result is shown in the following table 2.
The influence of 2 initial depression of table
From upper table 1 and upper table 2 as can be seen that two kinds of device optimum preparating conditions appear at initial depression be-
When 0.07MPa.Vacuum degree of the invention can be constant the preparation of multi-mode microwave pyrolysis installation active carbon yield and iodine sorption value point
Not Wei 52.78%, 838.45mg/g, conventional microwave pyrolysis installation preparation active carbon yield and iodine sorption value be respectively
42.75%, 678.18mg/g.The active carbon yield of multi-mode microwave pyrolysis installation preparation that can be constant using vacuum degree of the invention
10% is improved, iodine sorption value increases 160mg/g.
Limiting the scope of the invention, those skilled in the art should understand that, in technical solution of the present invention
On the basis of, the various modifications or variations that can be made by those skilled in the art with little creative work still of the invention
Within protection scope.
Claims (7)
1. the multi-mode microwave pyrolysis installation that a kind of vacuum degree can be constant, it include vacuum pump (1), relay (3), single-chip microcontroller (5),
Pressure sensor (6), micro-wave oven (8), flange (9), quartz ampoule (10) and surge tank (11), it is characterised in that: the vacuum pump
(1) it is connect with the surge tank (11), the surge tank (11) connect with the flange (9), and institute is equipped in the micro-wave oven (8)
It states quartz ampoule (10), the open end of the quartz ampoule (10) is sealed by the flange (9), is equipped in the surge tank (11) described
Pressure sensor (6), the pressure sensor (6) connect with the single-chip microcontroller (5), the relay (3) and the single-chip microcontroller
(5) it connects, the single-chip microcontroller (5) controls the vacuum pump (1) by the relay (3) according to the pressure size of reaction chamber
Power supply it is open or closed.
2. the multi-mode microwave pyrolysis installation that vacuum degree according to claim 1 can be constant, it is characterised in that: the pressure passes
Pressure signal is converted into electric signal and is transmitted to the single-chip microcontroller (5) by sensor (6), and the single-chip microcontroller (5), which receives, comes from the pressure
The electric signal of sensor (6) is handled, and is exported corresponding signal to the relay (3) and is carried out the open or closed vacuum pump
(1) power supply.
3. the multi-mode microwave pyrolysis installation that vacuum degree according to claim 1 or 2 can be constant, it is characterised in that: it is described after
Wiring board (2) are connected between electric appliance (3) and the vacuum pump (1).
4. the multi-mode microwave pyrolysis installation that vacuum degree according to claim 1 can be constant, it is characterised in that: the surge tank
(11) inlet and outlet at both ends are equipped with the check valve (7).
5. the multi-mode microwave pyrolysis installation that vacuum degree according to claim 1 can be constant, it is characterised in that: the quartz ampoule
(10) be open at one end, the closed straight tube of the other end, wherein closed end in the micro-wave oven (8) cavity, open end outwardly by
Flange (9) sealing.
6. the multi-mode microwave pyrolysis installation that vacuum degree according to claim 1 or 2 can be constant, it is characterised in that: the list
Piece machine (5) concatenation character liquid crystal display (4), current pressure values in real-time display reaction chamber.
7. the multi-mode microwave pyrolysis installation that vacuum degree according to claim 1 or 2 can be constant, it is characterised in that: the list
Piece machine sets pressure limit on (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811159251.9A CN109321261A (en) | 2018-09-30 | 2018-09-30 | A kind of multi-mode microwave pyrolysis installation that vacuum degree can be constant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811159251.9A CN109321261A (en) | 2018-09-30 | 2018-09-30 | A kind of multi-mode microwave pyrolysis installation that vacuum degree can be constant |
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| Publication Number | Publication Date |
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| CN109321261A true CN109321261A (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811159251.9A Pending CN109321261A (en) | 2018-09-30 | 2018-09-30 | A kind of multi-mode microwave pyrolysis installation that vacuum degree can be constant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110339589A (en) * | 2019-07-19 | 2019-10-18 | 吉林省威斯特固废处理有限公司 | Gaseous product processing unit |
| CN110479198A (en) * | 2019-07-29 | 2019-11-22 | 江苏理工学院 | It is a kind of can real time temperature measurement multi-mode microwave vacuum pyrolysis device |
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| CN2458610Y (en) * | 2001-01-15 | 2001-11-07 | 中国人民解放军南京军区联勤部药品仪器检验所 | Portable medical intelligent vacuum-meter check meter |
| CN203672124U (en) * | 2013-11-18 | 2014-06-25 | 义乌市巡科电器有限公司 | Vacuum induction melting furnace |
| CN205691405U (en) * | 2016-06-15 | 2016-11-16 | 西安航空学院 | A kind of microwave-heating experimental provision |
| CN106829955A (en) * | 2017-01-23 | 2017-06-13 | 江苏理工学院 | A kind of method that utilization scrap tire rubber vacuum microwave prepares activated carbon |
| CN206320994U (en) * | 2016-12-28 | 2017-07-11 | 广州福滔微波设备有限公司 | A kind of vacuum microwave firing equipment |
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2018
- 2018-09-30 CN CN201811159251.9A patent/CN109321261A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2458610Y (en) * | 2001-01-15 | 2001-11-07 | 中国人民解放军南京军区联勤部药品仪器检验所 | Portable medical intelligent vacuum-meter check meter |
| CN203672124U (en) * | 2013-11-18 | 2014-06-25 | 义乌市巡科电器有限公司 | Vacuum induction melting furnace |
| CN205691405U (en) * | 2016-06-15 | 2016-11-16 | 西安航空学院 | A kind of microwave-heating experimental provision |
| CN206320994U (en) * | 2016-12-28 | 2017-07-11 | 广州福滔微波设备有限公司 | A kind of vacuum microwave firing equipment |
| CN106829955A (en) * | 2017-01-23 | 2017-06-13 | 江苏理工学院 | A kind of method that utilization scrap tire rubber vacuum microwave prepares activated carbon |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110339589A (en) * | 2019-07-19 | 2019-10-18 | 吉林省威斯特固废处理有限公司 | Gaseous product processing unit |
| CN110479198A (en) * | 2019-07-29 | 2019-11-22 | 江苏理工学院 | It is a kind of can real time temperature measurement multi-mode microwave vacuum pyrolysis device |
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Application publication date: 20190212 |