CN107312553B - 60kg microwave coking test furnace and coking method thereof - Google Patents
60kg microwave coking test furnace and coking method thereof Download PDFInfo
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- CN107312553B CN107312553B CN201710542419.3A CN201710542419A CN107312553B CN 107312553 B CN107312553 B CN 107312553B CN 201710542419 A CN201710542419 A CN 201710542419A CN 107312553 B CN107312553 B CN 107312553B
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- microwave energy
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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
- C10B23/00—Other methods of heating coke ovens
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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
- C10B53/08—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form in the form of briquettes, lumps and the like
Abstract
The application discloses a 60kg microwave coking test furnace and a coking method, comprising a microwave energy acting cavity (4), a smoke exhaust pipeline (1) arranged at the top of the microwave energy acting cavity (4), air sections (3) symmetrically arranged at two sides of the microwave energy acting cavity (4), a waveguide transmission system (2) connected with the air sections (3), a microwave energy generator (7) connected with the waveguide transmission system (2) and a power control cabinet (8) connected with the microwave energy generator (7). The test furnace has reasonable structural design, high automation degree, high microwave heating efficiency, long service life and stable performance, saves energy sources compared with the traditional electric heating test furnace, and has strong environmental protection.
Description
Technical Field
The application belongs to the technical field of microwave coking, and particularly relates to a 60kg microwave coking test furnace and a coking method.
Background
The traditional coking test ovens mostly adopt electric heating and other modes, and the heating mode has two problems: on the one hand: the electric heating tube is easy to damage after long-term use, the heating time is prolonged, and the heating efficiency is reduced; on the other hand; long heating time and high power consumption.
The microwave heating mode is adopted, the output power of a single magnetron is 25kW, the efficiency is high, the service life is long, and frequent replacement is not needed; meanwhile, the microwave heating mode is to heat the coking coal from inside to outside, so that the coking coal is fast in heating speed, short in time and energy-saving.
Disclosure of Invention
The application aims to: the application aims to overcome the defects of the prior art and provide a microwave coking test furnace with reasonable structural design. The application adopts the microwave mode to directly heat the coking coal, so that the coking coal can be quickly heated, the coking time can be shortened, simultaneously, the coking coal is heated inside and outside, the uniformity of formed coke products is good, the microwave heating efficiency is high, the required microwave power is low, the coking coal is quickly heated, the energy is saved, and the environmental protection performance is good.
The technical scheme is as follows: in order to achieve the above purpose, the technical scheme adopted by the application is as follows:
a60 kg microwave coking test furnace comprises a microwave energy acting cavity, a smoke exhaust pipeline arranged at the top of the microwave energy acting cavity, air sections symmetrically arranged at two sides of the microwave energy acting cavity, a waveguide transmission system connected with the air sections, a microwave energy generator connected with the waveguide transmission system and a power supply control cabinet connected with the microwave energy generator;
the microwave energy acting cavity comprises a front oven door and a rear oven door;
a temperature measuring system is arranged at the top of the microwave energy acting cavity;
a heat preservation system is arranged in the hearth of the microwave energy acting cavity.
As a preferable scheme, the 60kg microwave coking test furnace is characterized in that the diameter of the smoke exhaust pipeline is 125mm.
In a preferred embodiment, the above-mentioned 60kg microwave coking test furnace, the microwave energy generator transmits microwave energy to the waveguide transmission system in a split manner through the power divider, and then feeds the microwave energy to the coking coal from two sides of the microwave energy application cavity respectively, so that the microwave energy is uniformly applied to the coking coal.
According to the 60kg microwave coking test furnace, the waveguide transmission system is designed in a simulation mode through simulation software, the feed port of the waveguide transmission system (2) is positioned on the left side of the air section and is connected with the air section through a flange, and the two feed ports are symmetrically distributed. The feed port size was 300 x 300 (mm x mm) and the length of the extended waveguide connected to the feed port was 520mm. The dimensions of the extended waveguide are respectively two parts, wherein the dimension of one side connected with the feed port is 300 x 300 (mm x mm), and the dimension of the other side connected with the straight waveguide is 248 x 124 (mm x mm).
As a preferable scheme, the 60kg microwave coking test furnace has the advantages that the top and the bottom of the air section are respectively provided with the exhaust ports, and heat in the air section is timely taken away through the exhaust ports, so that the high temperature of the outer shell of the test furnace is avoided.
As a preferable scheme, the 60kg microwave coking test furnace adopts an infrared contact sensor as a temperature measuring system, so that the coking coal temperature can be displayed in real time, the temperature measuring error range is 0% -1.3%, and the temperature accuracy in the test can be ensured.
As a preferable scheme, the 60kg microwave coking test furnace comprises a heat preservation system which sequentially comprises a refractory material, a heat preservation material and a heat insulation material from inside to outside. The heat preservation performance is good, and microwave energy can pass through the materials and act on coking coal. The heat preservation system can reduce heat loss and improve the heat efficiency of microwave coking.
As a preferable scheme, the cavity plate of the microwave energy acting cavity is made of 310S stainless steel material, and can be used for a long time at the temperature of 1000 ℃ without deformation.
As a preferred scheme, the microwave power of the microwave energy generator of the 60kg microwave coking test furnace is continuously adjustable from 0 to 25 kW. Different microwave heating powers can be satisfied.
As a preferable scheme, the 60kg microwave coking test furnace is characterized in that the power supply control cabinet is provided with a PLC and a touch display screen connected with the PLC. The method can control the operations of starting up, shutting down, adjusting power and the like of the test furnace, and parameters of the coking coal temperature and heating curve, microwave power, oxygen content and carbon monoxide content can be displayed on the touch display screen in real time.
The microwave coking test method is characterized by comprising the following steps of:
step 1, weighing 60+/-3 kg of coking coal particles, placing the coking coal particles in a briquette die, and pressing the coking coal particles into briquettes;
step 2, putting the coal cake and the coal cake mould into a microwave test oven, taking out the coal cake mould after the position is adjusted, inserting an infrared contact sensor into a hearth of the microwave test oven from the top of a cavity plate of the microwave test oven, and adjusting the distance between the infrared contact sensor and the coal cake;
step 3, closing furnace doors at two sides of the microwave energy acting cavity;
step 4,
(1) Checking whether the microwave test oven is well grounded and whether the circuit is well matched;
(2) starting a power supply of a microwave energy generator on a power supply control cabinet, and observing whether a door switch, a water flow, a microwave door, an emergency switch and a cooling water temperature indicator lamp on a PLC touch display screen are green;
step 5, sequentially starting a low-voltage switch, a magnetic field switch and a high-voltage switch on a power control cabinet, starting a test after the set microwave power percentage is reached, dividing microwave energy into two parts by a microwave energy generator through a power divider, transmitting the two parts to a waveguide transmission system, and feeding the two parts from two sides of a microwave energy acting cavity respectively, so that the microwave energy acts on a coal cake uniformly, and heating and coking to obtain coking coal;
and 6, pushing the coke in a high temperature state out of the microwave energy acting cavity, and then performing quenching operation by using water to obtain a coke product in a cooling state.
In the above-mentioned microwave coking test method, in the step 2, the distance between the infrared contact sensor and the surface of the coal cake is 2-4 cm.
As a preferable mode, in the microwave coking test method, the particle size of the raw material coal in the step 1 is below 3 mm;
as a preferable scheme, the microwave coking test method is characterized in that the bulk density of the pressed coal into the coal cake in the step 1 is 1.0-1.2g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The size of the briquettes was 300 x 500mm x 360 (mm x mm).
The microwave energy generated in the microwave energy generator is uniformly applied to the microwave action cavity through the air section by utilizing the waveguide transmission system, the coking coal is uniformly heated, the temperature of the coking coal is displayed in real time through the temperature measuring system, a large amount of flue gas generated in the coking process is discharged through the smoke exhaust pipeline, an internal heat preservation system designed by selecting heat preservation materials suitable for being used in the microwave field environment is adopted, the automatic heat preservation function is realized through program setting in the power supply control cabinet, the coking time is saved, the purposes of saving energy and protecting environment, reducing energy consumption, improving coke yield and quality are achieved, and the problems of long coking time, high energy consumption, damaged heating components and the like in the traditional coking test furnace can be solved.
The beneficial effects are that: compared with the prior art, the 60kg microwave coking test furnace provided by the application has the following advantages:
most of traditional coking coal test furnaces adopt an electric heating mode, and the heating mode has two problems: on the one hand: the electrothermal tube is easy to damage after long-term use, so that the heating time is prolonged, and the coking efficiency is reduced; on the other hand; the electric heating mode is coking through heat conduction, and the heating time is long, so that the energy consumption is high. The microwave coking test furnace and the coking test method provided by the application have reasonable structural design, adopt a microwave mode to directly heat coking coal, so that the coking coal is heated quickly, the coking time is shortened, meanwhile, the coking coal is heated simultaneously inside and outside, the uniformity of formed coke products is good, the microwave heating efficiency is high, the required microwave power is low, the coking coal is heated quickly, the energy saving effect can be achieved, meanwhile, the service life of the microwave magnetron is long, frequent replacement is not needed, and the operability and stability of the coking test furnace can be greatly improved.
Drawings
FIG. 1 is a schematic diagram of a 60kg microwave coking test furnace.
FIG. 2 is a coking test process flow chart of a 60kg microwave coking test furnace provided by the application.
Detailed Description
The present application is further illustrated in the accompanying drawings and detailed description which are to be understood as being merely illustrative of the application and not limiting of its scope, and various modifications of the application, which are equivalent to those skilled in the art upon reading the application, will fall within the scope of the application as defined in the appended claims.
As shown in FIG. 1, a 60kg microwave coking test furnace comprises a microwave energy acting cavity 4, a smoke exhaust pipeline 1 arranged at the top of the microwave energy acting cavity 4, air sections 3 symmetrically arranged at two sides of the microwave energy acting cavity 4, a waveguide transmission system 2 connected with the air sections 3, a microwave energy generator 7 connected with the waveguide transmission system 2 and a power supply control cabinet 8 connected with the microwave energy generator 7;
the microwave energy acting cavity 4 comprises a front oven door and a rear oven door;
a temperature measuring system 5 is arranged at the top of the microwave energy acting cavity 4; a heat preservation system 6 is arranged in the hearth of the microwave energy acting cavity 4. The top and the bottom of the air section 3 are respectively provided with an air vent, and heat in the air section (3) is timely taken away through the air vent, so that the high temperature of the outer shell of the test furnace is avoided. The heat preservation system (6) sequentially comprises a refractory material, a heat preservation material and a heat insulation material from inside to outside. The power control cabinet (8) is provided with a PLC and a touch display screen connected with the PLC.
In the above-mentioned 60kg microwave coking test furnace, the diameter of the fume exhaust pipe 1 is 125mm.
In the above-mentioned 60kg microwave coking test furnace, the microwave energy generator 7 transmits the microwave energy into two by the power divider to the waveguide transmission system 2, and then feeds the microwave energy into the two sides of the microwave energy application cavity 4 respectively, so that the microwave energy is uniformly applied to the coking coal.
In the 60kg microwave coking test furnace, the feed port of the waveguide transmission system (2) is positioned at the left side of the air section and is connected with the air section through a flange, and the two feed ports are symmetrically distributed. The feed port size was 300 x 300 (mm x mm) and the length of the extended waveguide connected to the feed port was 520mm. The dimensions of the extended waveguide are respectively two parts, wherein the dimension of one side connected with the feed port is 300 x 300 (mm x mm), and the dimension of the other side connected with the straight waveguide is 248 x 124 (mm x mm).
The 60kg microwave coking test furnace has the advantages that the temperature measurement system 5 adopts an infrared contact sensor, the coking coal temperature can be displayed in real time, and the temperature measurement error range is 0% -1.3%.
The microwave power of the microwave energy generator (7) is continuously adjustable from 0 to 25 kW.
Example 2
As shown in fig. 2, a microwave coking test method includes the following steps:
step 1, weighing 60kg of coking coal particles, placing the coking coal particles in a briquette die, and pressing the coking coal particles into briquettes;
step 2, putting the coal cake and the coal cake mould into a microwave test oven, taking out the coal cake mould after the position is adjusted, inserting an infrared contact sensor into a hearth of the microwave test oven from the top of a cavity plate of the microwave test oven, and adjusting the distance between the infrared contact sensor and the coal cake to be 3cm;
step 3, closing furnace doors at two sides of the microwave energy acting cavity 4;
step 4,
(1) Checking whether the microwave test oven is well grounded and whether the circuit is well matched;
(2) starting a power supply of a microwave energy generator 7 on a power supply control cabinet 8, and observing whether a door switch, a water flow, a microwave door, an emergency switch and a cooling water temperature indicator lamp on a PLC touch display screen are green;
step 5, sequentially starting a low-voltage switch, a magnetic field switch and a high-voltage switch on a power control cabinet 8, starting a test after the set microwave power percentage is reached, dividing microwave energy into two parts by a microwave energy generator 7 through a power divider, transmitting the two parts to a waveguide transmission system 2, and feeding the two parts from two sides of a microwave energy acting cavity 4 respectively, so that the microwave energy acts on coal cakes uniformly, and heating and coking to obtain coking coal;
and 6, pushing the coke in a high temperature state out of the microwave energy acting cavity 4, and then performing quenching operation by using water to obtain a coke product in a cooling state.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (2)
1. A microwave coking test method is characterized in that a 60kg microwave coking test furnace is used, and comprises a microwave energy acting cavity (4), a smoke exhaust pipeline (1) arranged at the top of the microwave energy acting cavity (4), air sections (3) symmetrically arranged at two sides of the microwave energy acting cavity (4), a waveguide transmission system (2) connected with the air sections (3), a microwave energy generator (7) connected with the waveguide transmission system (2) and a power control cabinet (8) connected with the microwave energy generator (7);
the microwave energy acting cavity (4) comprises a front oven door and a rear oven door;
a temperature measuring system (5) is arranged at the top of the microwave energy acting cavity (4);
a heat preservation system (6) is arranged in the hearth of the microwave energy acting cavity (4);
the diameter of the smoke exhaust pipeline (1) is 125mm; the microwave energy generator (7) divides microwave energy into two parts through the power divider and transmits the two parts to the waveguide transmission system (2), and then the two parts are fed into the microwave energy application cavity (4) from two side surfaces respectively, so that the microwave energy is uniformly applied to the coking coal;
the feed port of the waveguide transmission system (2) is positioned at the left side of the air section and is connected with the air section through a flange, and the two feed ports are symmetrically distributed; the size of the feed port is 300 mm-300 mm, and the length of the expansion waveguide connected with the feed port is 520mm; the size of the expansion waveguide is respectively two parts, wherein the size of one side connected with the feed port is 300mm x 300mm, and the size connected with the straight waveguide on the other side is 248 mm x 124mm;
the top and the bottom of the air section (3) are respectively provided with an air outlet, and heat in the air section (3) is timely taken away through the air outlet, so that the high temperature of the shell of the test furnace is avoided;
the temperature measurement system (5) adopts an infrared contact sensor, can display the coking coal temperature in real time, and has a temperature measurement error range of 0% -1.3%;
the heat preservation system (6) sequentially comprises a refractory material, a heat preservation material and a heat insulation material from inside to outside;
the microwave power of the microwave energy generator (7) is continuously adjustable from 0 to 25 kW;
the power control cabinet (8) is provided with a PLC and a touch display screen connected with the PLC;
the microwave coking test method comprises the following steps:
step 1, weighing 60+/-3 kg of coking coal particles, placing the coking coal particles in a briquette die, and pressing the coking coal particles into briquettes;
step 2, putting the coal cake and the coal cake mould into a microwave test oven, taking out the coal cake mould after the position is adjusted, inserting an infrared contact sensor into a hearth of the microwave test oven from the top of a cavity plate of the microwave test oven, and adjusting the distance between the infrared contact sensor and the coal cake;
step 3, closing furnace doors at two sides of the microwave energy acting cavity (4);
step 4,
(1) Checking whether the microwave test oven is well grounded and whether the circuit is well matched;
(2) starting a power supply of a microwave energy generator (7) on a power supply control cabinet (8), and observing whether a door switch, a water flow, a microwave door, an emergency switch and a cooling water temperature indicator lamp on a PLC touch display screen are green;
step 5, sequentially starting a low-voltage switch, a magnetic field switch and a high-voltage switch on a power control cabinet (8), starting a test after a set microwave power percentage is reached, dividing microwave energy into two parts by a microwave energy generator (7) through a power divider, transmitting the two parts to a waveguide transmission system (2), and feeding the two parts from two sides of a microwave energy acting cavity (4) respectively, so that the microwave energy acts on a coal cake uniformly, and heating and coking to obtain coking coal;
and 6, pushing the coke in a high temperature state out of the microwave energy acting cavity (4), and then performing quenching operation by using water to obtain a coke product in a cooling state.
2. The method for microwave coking test according to claim 1, wherein in the step 2, the distance between the infrared contact sensor and the surface of the coal cake is 2-4 cm.
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| CN201710542419.3A CN107312553B (en) | 2017-07-05 | 2017-07-05 | 60kg microwave coking test furnace and coking method thereof |
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| CN201710542419.3A CN107312553B (en) | 2017-07-05 | 2017-07-05 | 60kg microwave coking test furnace and coking method thereof |
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| CN107312553B true CN107312553B (en) | 2023-09-19 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497835A (en) * | 2009-03-13 | 2009-08-05 | 唐山金强恒业压力型焦有限公司 | Method for making coal fine into form coke by microwave energy |
| CN103059889A (en) * | 2013-01-23 | 2013-04-24 | 中国矿业大学 | Microwave pretreatment desulfurization coking method and device |
| CN105387718A (en) * | 2015-12-15 | 2016-03-09 | 南京三乐微波技术发展有限公司 | High-power microwave high-temperature smelting device |
| CN105505424A (en) * | 2016-01-10 | 2016-04-20 | 李阳春 | Device and method for regulating humidity of coal powder by utilizing microwave preheating |
| CN205403481U (en) * | 2015-12-15 | 2016-07-27 | 南京三乐微波技术发展有限公司 | High -power microwave high temperature smelting device |
-
2017
- 2017-07-05 CN CN201710542419.3A patent/CN107312553B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497835A (en) * | 2009-03-13 | 2009-08-05 | 唐山金强恒业压力型焦有限公司 | Method for making coal fine into form coke by microwave energy |
| CN103059889A (en) * | 2013-01-23 | 2013-04-24 | 中国矿业大学 | Microwave pretreatment desulfurization coking method and device |
| CN105387718A (en) * | 2015-12-15 | 2016-03-09 | 南京三乐微波技术发展有限公司 | High-power microwave high-temperature smelting device |
| CN205403481U (en) * | 2015-12-15 | 2016-07-27 | 南京三乐微波技术发展有限公司 | High -power microwave high temperature smelting device |
| CN105505424A (en) * | 2016-01-10 | 2016-04-20 | 李阳春 | Device and method for regulating humidity of coal powder by utilizing microwave preheating |
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