CN210832013U - Plasma gasification and melting integrated furnace - Google Patents
Plasma gasification and melting integrated furnace Download PDFInfo
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- CN210832013U CN210832013U CN201921684244.0U CN201921684244U CN210832013U CN 210832013 U CN210832013 U CN 210832013U CN 201921684244 U CN201921684244 U CN 201921684244U CN 210832013 U CN210832013 U CN 210832013U
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Abstract
The utility model discloses a plasma gasification and melting integrated furnace, which comprises a furnace body, an air pipe, a distributing device and a plasma generator. The inside processing chamber that has of furnace body, furnace body contain conversion section, dry pyrolysis reduction section, oxidation section, sediment section and solution section from top to bottom in proper order. The processing cavity upwards extends to the conversion section, the processing cavity downwards penetrates through the drying pyrolysis reduction section, the oxidation section and the slag section in sequence and then extends into the solution section, the distributing device is assembled at the conversion section and arranges materials into the processing cavity, the part of the processing cavity, which is positioned in the drying pyrolysis reduction section, is communicated with the air pipe, the plasma generator is assembled at the oxidation section, the solution section is provided with an electrode, an outflow channel communicated with the part of the processing cavity, which is positioned in the solution section, and a flow speed switch for selectively opening and closing the outflow channel, and the electrode is respectively arranged at the part of the processing cavity, which is positioned in the solution section, and the outflow channel. The utility model discloses a integrative stove of plasma gasification melting can handle the dangerous thing of numerous and diverse kind, and the treatment effect is good.
Description
Technical Field
The utility model relates to a waste treatment field especially relates to a integrative stove of plasma gasification melting of hazardous waste treatment.
Background
The harmless treatment of solid wastes, especially dangerous solid wastes, is a worldwide problem, and the treatment technologies commonly used internationally at present mainly include a solidification landfill method, an incineration method, a high-temperature melting technology and the like. The solidification landfill method is the simplest and most common method, but has significant environmental risks and land resource occupation problems, and is gradually replaced by other methods. Although the incineration method is a mainstream treatment method in the field of hazardous waste treatment, the method can play a role in reducing to a certain extent, the treated residues such as fly ash and the like are still hazardous waste, and the solidification and landfill treatment is still needed in the later period, so that the problems of environmental pollution and land resource occupation cannot be fundamentally solved.
Although the plasma high-temperature melting technology is the most effective method internationally recognized at present and is suitable for most dangerous waste treatment, the effects of light emission and less landfill can be achieved. However, the current plasma gasification furnace has a single type of hazardous waste treatment and poor treatment effect.
Therefore, there is a need for a plasma gasification and melting integrated furnace capable of treating various dangerous wastes with good treatment effect to overcome the above-mentioned drawbacks.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can handle the integrative stove of plasma gasification melting that just treatment effect is good to the dangerous waste material of a great variety.
In order to achieve the above purpose, the utility model discloses a integrative stove of plasma gasification melting includes furnace body, tuber pipe, distributing device and plasma generator. The furnace body is internally provided with a processing cavity and sequentially comprises a conversion section, a drying pyrolysis reduction section, an oxidation section, a slag section and a solution section from top to bottom, the treatment cavity extends upwards into the conversion section, the treatment cavity sequentially passes through the drying pyrolysis reduction section, the oxidation section and the slag section downwards and then extends into the solution section, the material distribution device is assembled at the conversion section and distributes materials into the treatment cavity, the part of the treatment cavity, which is positioned in the drying pyrolysis reduction section, is communicated with the air pipe, the plasma generator is assembled at the oxidation section, the solution section is provided with an electrode, an outflow channel communicated with the part of the treatment cavity in the solution section, and a flow rate switch selectively opening and closing the outflow channel, the electrodes are respectively arranged at the part of the treatment cavity located at the solution section and the outflow channel.
Preferably, the utility model discloses an integrative stove of plasma gasification melting still includes fixed frame and bottom sprag frame, conversion section, dry pyrolysis reduction section, oxidation section and sediment section form the integral type structure jointly in order to constitute furnace body upper portion, the solution section constitutes the furnace body lower part, furnace body upper portion with fixed frame fixed connection, the bottom sprag frame stretches into in the fixed frame, the furnace body lower part install in bottom sprag frame department, just furnace body upper portion with detachable montage between the furnace body lower part.
Preferably, the bottom support frame comprises a rail horizontally arranged and extending into the fixed frame and a lifting driver slidably arranged on the rail, and the lower part of the furnace body is arranged at the output end of the lifting driver.
Preferably, the lifting driver is a linear motor, a hydraulic cylinder or an air cylinder.
Preferably, the part of the treatment cavity located in the dry pyrolysis reduction section is in a truncated cone shape with a small top and a large bottom, and the taper range of the part of the treatment cavity located in the dry pyrolysis reduction section is 81-85 degrees.
Preferably, the drying pyrolysis reduction section is sequentially provided with a drying layer temperature sensor, a pyrolysis layer temperature sensor and a reduction layer temperature sensor which are spaced from each other from top to bottom; the slag section is provided with a slag layer temperature sensor; the solution section is provided with a solution upper layer temperature sensor and a solution lower layer temperature sensor.
Preferably, the oxidation section comprises a water cooling jacket and a support rib plate, the support rib plate is installed at the outer side of the water cooling jacket, and the plasma generators are respectively arranged in the circumferential direction around the water cooling jacket.
Preferably, an oxide layer temperature sensor is installed on the water-cooling sleeve.
Preferably, a heating element and a flow channel temperature sensor are installed at the outlet of the outflow channel, and the flow rate switch is adjacent to the heating element.
Preferably, the end of the conversion section is provided with a flue communicated with the treatment cavity, the top of the conversion section is also provided with a level meter, and the outer flow channel comprises a fluid cavity, an ascending channel and a main channel.
Compared with the prior art, the furnace body sequentially comprises a conversion section, a drying pyrolysis reduction section, an oxidation section, a slag section and a solution section from top to bottom, a processing cavity extends upwards into the conversion section, the processing cavity penetrates through the drying pyrolysis reduction section, the oxidation section and the slag section downwards sequentially and then extends into the solution section, a distributing device is assembled at the conversion section and distributes materials into the processing cavity, the part of the processing cavity, which is positioned in the drying pyrolysis reduction section, is communicated with an air pipe, a plasma generator is assembled at the oxidation section, the solution section is provided with electrodes, an outflow channel communicated with the part of the processing cavity, which is positioned in the solution section, and a flow speed switch for selectively opening and closing the outflow channel, and the electrodes are respectively arranged at the part of the processing cavity, which is positioned in the solution section, and at the; the event is when distributing device evenly arranges the position that the processing chamber is located the conversion section with dangerous waste, and this dangerous waste drops in the solution section after conversion section, dry pyrolysis reduction section, oxidation section and sediment section are handled in proper order, and the electrode of solution section makes the temperature of solution section highly reach 1600 to 1700 degrees, and most dangerous wastes material becomes molten state when 1450 degrees, so, makes the utility model discloses a plasma gasification melting integrative stove can handle the dangerous wastes material of a great variety. Just because dangerous waste falls in the solution section after conversion section, dry pyrolysis reduction section, oxidation section and sediment section are handled in proper order to become the molten state by solution section high temperature treatment, so the treatment effect is good, and then controls intermittent type through the cooperation of outer stream channel and velocity of flow switch and arranges sediment.
Drawings
Fig. 1 is a schematic view of the internal structure of the plasma gasification and melting integrated furnace of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
FIG. 3 is a schematic view of the internal structure of the plasma gasification and melting integrated furnace shown in FIG. 1 in the sections defining the furnace body.
Detailed Description
In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.
Referring to fig. 1 to 3, a plasma gasification and melting furnace 100 of the present invention includes a furnace body 10, an air duct 20, a material distribution device 30, and a plasma generator 40. The furnace body 10 is internally provided with a processing cavity 50, and the furnace body 10 sequentially comprises a conversion section 11, a drying pyrolysis reduction section 12, an oxidation section 13, a slag section 14 and a solution section 15 from top to bottom; the treatment cavity 50 extends upwards into the conversion section 11, and the treatment cavity 50 sequentially penetrates through the drying pyrolysis reduction section 12, the oxidation section 13 and the slag section 14 downwards and then extends into the solution section 15, so that the treatment cavity 50 is formed at five positions of the conversion section 11, the drying pyrolysis reduction section 12, the oxidation section 13, the slag section 14 and the solution section 15; the distribution device 30 is assembled at the conversion section 11 and distributes the material (such as hazardous waste) into the treatment chamber 50 for uniformly distributing the hazardous waste into the treatment chamber 50 in a portion 51 of the conversion section 11; the part 52 of the processing cavity 50 positioned in the drying pyrolysis reduction section 12 is communicated with the air pipe 20; the plasma generator 40 is installed at the oxidation stage 13, and the solution stage 15 is provided with an electrode 60, an outflow channel 16 communicating with a portion 55 of the treatment chamber 50 located inside the solution stage 15, and a flow rate switch 70 selectively opening and closing the outflow channel 16. Electrodes 60 are disposed at the portion 55 of the solution section 15 and the outflow channel 16 of the treatment chamber 50, respectively. Specifically, in order to facilitate quick maintenance, the plasma gasification and melting integrated furnace 100 of the present invention further comprises a fixing frame 80 and a bottom support frame 90, wherein the conversion section 11, the drying pyrolysis reduction section 12, the oxidation section 13 and the slag section 14 form an integrated structure together to form a furnace body upper portion 10a, the solution section 15 forms a furnace body lower portion, the furnace body upper portion 10a is fixedly connected with the fixing frame 80, and the fixing frame 80 supports and fixes the furnace body upper portion 10 a; the bottom support frame 90 extends into the fixed frame 80, the lower part of the furnace body is arranged at the bottom support frame 90, and the upper part 10a of the furnace body and the lower part of the furnace body are detachably connected; preferably, the bottom support frame 90 comprises a rail 91 horizontally arranged and extending into the fixed frame 80 and a lifting driver 92 slidably arranged on the rail 91, the lower part of the furnace body is installed at the output end of the lifting driver 92, and the lifting driver 92 drives the lower part of the furnace body to move in a manner of being jointed with or separated from the upper part 10a of the furnace body; for example, the lifting driver 92 is a hydraulic cylinder, and of course, the lifting driver 92 may also be a linear motor or an air cylinder according to actual requirements, so that the disclosure is not limited thereto. More specifically, the following:
as shown in fig. 1 and 3, a portion 52 of the processing cavity 50 located in the dry pyrolysis reduction section 12 is in a truncated cone shape with a small top and a large bottom, and a taper α of the portion 52 of the processing cavity 50 located in the dry pyrolysis reduction section 12 ranges from 81 degrees to 85 degrees, and the shape of the taper α is adapted to the volume expansion of heated materials (such as hazardous waste) and the volume contraction of cooled flue gas flow, so that the frictional resistance of the hazardous waste reduction is favorably reduced, and the formation of material arches is avoided.
As shown in fig. 1 to 3, the drying, pyrolysis and reduction section 12 is sequentially provided with a drying layer temperature sensor 17a, a pyrolysis layer temperature sensor 17b and a reduction layer temperature sensor 17c spaced apart from each other from top to bottom, for detecting the temperature of the drying, pyrolysis and reduction section 12; the slag section 14 is provided with a slag layer temperature sensor 17d for detecting the temperature of the slag section 14; the solution section 15 is provided with a solution upper layer temperature sensor 17e and a solution lower layer temperature sensor 17f for detecting the temperature of the solution section 15, but not limited thereto. It is to be noted that, as in fig. 3, the left-hand size designation H1 refers to the range of the reforming section 11, the size designation H2 refers to the range of the dry pyrolysis reduction section 12, the size designation H3 refers to the range of the oxidation section 13, the size designation H4 refers to the range of the slag section 14, and the size designation H5 refers to the range of the solution section 15.
As shown in fig. 1 and 3, the oxidation section 13 includes a water cooling jacket 131 and a support rib plate 132, and the support rib plate 132 is installed at an outer side of the water cooling jacket 131 and is used for supporting and fixing the water cooling jacket 131; plasma generator 40 is the circumference arrangement around water cooling jacket 131 respectively, and it is more preferable that plasma generator 40 be 3, evenly surrounds water cooling jacket 131 to make oxidation section 13 produce high temperature plasma under plasma generator 40's effect, make the inorganic matter in the hazardous waste thoroughly decompose, provide a large amount of heats to the slag simultaneously, under the effect of water cooling jacket 131 and support gusset 132, prevent the slag cinder wall built-up phenomenon. Specifically, the water cooling jacket 131 is provided with an oxide layer temperature sensor 17g for observing the temperature of the reaction, but not limited thereto.
As shown in fig. 1 to 3, a heating element 17h and a flow channel temperature sensor 17i are installed at the outlet of the outflow channel 16, and a flow rate switch 70 is adjacent to the heating element 17h to prevent the outlet of the outflow channel 16 from being blocked by the heating element 17h and the flow channel temperature sensor 17 i. Specifically, the outer flow channel 161 includes a flow hole 161, a rising channel 162 and a main flow channel 163, so that the solution in the solution section 15 is accumulated to a certain extent to flow to the main flow channel 163 through the rising channel 162, but is not limited thereto.
As shown in fig. 1 and 3, a flue 17j communicating with the processing chamber 50 is provided at an end of the conversion section 11, and a level indicator 17k is further installed at a top of the conversion section 11 to observe a level in the furnace by means of the level indicator 17 k.
The working principle of the plasma gasification and melting integrated furnace of the utility model is explained with the attached drawings:
when material (such as, but not limited to, hazardous waste) is uniformly distributed from the distribution device 30 into the portion 51 of the treatment chamber 50 at the conversion section 11, the level inside the furnace is observed by the level gauge 17 k; dangerous waste drops in dry pyrolysis reduction section 12 through conversion section 11, because dry pyrolysis reduction section 12 adopts the right circular platform shape, the volume shrink after its shape adapts to the expansion of dangerous waste heated back volume and flue gas stream cooling, is favorable to reducing the frictional resistance that dangerous waste descends, avoids forming the material and encircles. Meanwhile, the drying layer temperature sensor 17a, the pyrolysis layer temperature sensor 17b and the reduction layer temperature sensor 17c are installed in the drying pyrolysis reduction section 12, and are used for detecting the temperature of the drying pyrolysis reduction section 12.
And the hazardous waste entering the dry pyrolytic reduction section 12 is treated by the dry pyrolytic reduction section 12 by: after the hazardous waste enters the drying pyrolysis reduction section 12, water is separated out under the action of heat. Drying at 100-250 deg.c; the pyrolysis reaction starts when the temperature rises above 300 degrees. At 300-800 ℃, the organic components in the hazardous waste can release about 70% of volatile components, and the high energy density input of the plasma generator 40 accelerates and promotes the decomposition of the organic components. The volatile matters separated out by the pyrolysis reaction mainly comprise hydrocarbon, hydrogen, water vapor, carbon monoxide, carbon dioxide, methane, tar and the like.
The pyrolysis reaction equation is: cxHyOz→C(s)+H2+H2O+CO+CO2+CH4+Tar
The reduction process is an anoxic environment, and the combustion products and water vapor in the lower oxidation stage 13 react with carbon in the reduction layer to generate H2And CO, and the like.
The main reaction is as follows: CO + C → CO; h2O+C→H2+CO
After the hazardous waste is subjected to the three drying, pyrolysis and reduction stages, the residual fixed carbon and air introduced by the air pipe 20 are subjected to chemical reaction, and a large amount of heat is released to support drying, pyrolysis and subsequent reduction reaction of the hazardous waste. The main reaction is as follows: c + O2→CO2
And the waste treated by the drying, pyrolysis and reduction section 12 enters the oxidation section 13, as the reaction temperature of the oxidation section 13 is 900-1200 ℃, the temperature is too high, part of the waste reaches the ash melting point, 3 plasma generators 40 are uniformly arranged on the oxidation section 13, and high-temperature plasma is generated under the action of the plasma generator 40, so that inorganic matters in the dangerous waste are thoroughly decomposed, a large amount of heat is provided for slag, and meanwhile, the oxidation section 13 comprises a water cooling sleeve 131 and a supporting rib plate 132 structure, so that the phenomenon of wall hanging of slag blocks is prevented.
The waste is changed into ash slag after passing through the oxidation section 13, falls into the slag section 14, and the temperature of the slag layer is detected by a slag layer temperature sensor 17d of the slag section 14.
The waste passing through the slag section 14 finally falls into the solution section 15, the solution section 15 is provided with a solution layer upper temperature sensor 17e and a solution layer upper temperature sensor 17f, and the temperature condition of the solution section 15 is observed; and the joint (or assembly joint) between the upper furnace body part 10a and the lower furnace body part is automatically sealed when the molten slag is cooled, so that the tightness of the joint between the upper furnace body part 10a and the lower furnace body part is ensured.
In addition, because the solution section 15 is provided with the electrode 60, ash falling into the solution section 15 provides melting temperature, the ash forms solution after melting, the solution enters the flow liquid hole 161 and flows to the main flow passage 163 through the ascending passage 162, and the flow rate switch 70 controls intermittent deslagging so as to control the matching of slagging speed and melting speed; by means of the flow path temperature sensor 17i and the heating element 17h, for preventing the outlet of the outflow channel 16 from being clogged. The lower part of the furnace body is supported by the bottom support frame 90, and the bottom support frame 90 comprises a track 91 and a lifting driver 92, so that the lower part of the furnace body is convenient to maintain.
And the micro negative pressure is kept in the furnace to ensure that harmful gas is not discharged outside, and the flue gas enters the conversion section 11 after passing through the drying pyrolysis oxidation section 12 and then passes through the flues 17j on the left side and the right side.
Compared with the prior art, as the furnace body 10 sequentially comprises the conversion section 11, the drying pyrolysis reduction section 12 and the oxidation section 13 from top to bottom, the device comprises a slag section 14 and a solution section 15, wherein a processing cavity 50 extends upwards into a conversion section 11, the processing cavity 50 sequentially penetrates through a drying pyrolysis reduction section 12, an oxidation section 13 and the slag section 14 downwards and then extends into the solution section 15, a material distribution device 30 is assembled at the conversion section 11 and distributes materials into the processing cavity 50, a part 52 of the processing cavity 50, which is positioned in the drying pyrolysis reduction section 12, is communicated with an air pipe 20, a plasma generator 40 is assembled at the oxidation section 13, the solution section 15 is provided with an electrode 60, an outer flow channel 16 communicated with a part 55 of the processing cavity 50, which is positioned in the solution section 15, and a flow rate switch 70 selectively opening and closing the outer flow channel 16, and the electrode 60 is respectively arranged at the part 55 of the processing cavity 50, which is positioned in the solution section 15, and the outer flow channel 16; therefore, when the material distribution device 30 uniformly distributes the hazardous waste to the portion 51 of the processing cavity 50 located in the conversion section 11, the hazardous waste drops into the solution section 15 after sequentially passing through the conversion section 11, the drying, pyrolysis and reduction section 12, the oxidation section 13 and the slag section 14, the temperature of the solution section 15 is as high as 1600-1700 ℃ by the electrode 60 of the solution section 15, and most of the hazardous waste is already in a molten state at 1450 ℃, so that the plasma gasification and melting integrated furnace 100 of the present invention can dispose various hazardous waste. Just because the hazardous waste drops in the solution section 15 after being sequentially treated by the conversion section 11, the drying pyrolysis reduction section 12, the oxidation section 13 and the slag section 14 and is changed into a molten state by the high-temperature treatment of the solution section 15, the treatment effect is good, and the intermittent slag discharge is controlled by the cooperation of the outer flow channel 16 and the flow rate switch 70.
It is noted that the upper furnace body portion 10a comprises a fire-resistant layer and a steel outer shell layer in sequence from inside to outside; in the lower part of the furnace body, except for the oxidation section 13, the rest of the furnace body also comprises a fire-resistant layer and a steel outer shell layer in sequence from inside to outside, but not limited to this. Additionally, the utility model discloses an integrative stove 100 of plasma gasification melting is suitable for and current controller electric connection to under the effect of controller, realize the utility model discloses an intelligent control of integrative stove 100 of plasma gasification melting.
The above disclosure is only a preferred embodiment of the present invention, and the scope of the claims of the present invention should not be limited thereby, and all the equivalent changes made in the claims of the present invention are intended to be covered by the present invention.
Claims (10)
1. A plasma gasification and melting integrated furnace comprises a furnace body, an air pipe, a material distribution device and a plasma generator, wherein a processing cavity is arranged in the furnace body, and is characterized in that the furnace body sequentially comprises a conversion section, a drying pyrolysis reduction section, an oxidation section, a slag section and a solution section from top to bottom, the processing cavity extends upwards into the conversion section, the processing cavity extends downwards into the solution section after sequentially passing through the drying pyrolysis reduction section, the oxidation section and the slag section, the material distribution device is assembled at the conversion section and arranges materials into the processing cavity, the part of the processing cavity, which is positioned in the drying pyrolysis reduction section, is communicated with the air pipe, the plasma generator is assembled at the oxidation section, the solution section is provided with an electrode, an outflow channel communicated with the part of the processing cavity, which is positioned in the solution section, and a flow speed switch for selectively opening and closing the outflow channel, the electrodes are respectively arranged at the part of the treatment cavity located at the solution section and the outflow channel.
2. The plasma gasification and melting integrated furnace according to claim 1, further comprising a fixing frame and a bottom support frame, wherein the conversion section, the drying and pyrolysis reduction section, the oxidation section and the slag section form an integrated structure together to form an upper part of the furnace body, the solution section forms a lower part of the furnace body, the upper part of the furnace body is fixedly connected with the fixing frame, the bottom support frame extends into the fixing frame, the lower part of the furnace body is mounted at the bottom support frame, and the upper part of the furnace body and the lower part of the furnace body are detachably connected.
3. The plasma gasification and melting integrated furnace of claim 2, wherein the bottom support frame comprises a rail horizontally arranged and extending into the fixed frame and a lifting driver slidably arranged on the rail, and the lower part of the furnace body is mounted at the output end of the lifting driver.
4. The plasma gasification and melting integrated furnace of claim 3, wherein the lifting driver is a linear motor, a hydraulic cylinder or a pneumatic cylinder.
5. The plasma gasification and melting integrated furnace of claim 1, wherein the part of the processing cavity located in the dry pyrolysis reduction section is in a truncated cone shape with a small top and a big bottom, and the taper range of the part of the processing cavity located in the dry pyrolysis reduction section is 81 degrees to 85 degrees.
6. The plasma gasification and melting integrated furnace of claim 1, wherein the drying pyrolysis reduction section is sequentially provided with a drying layer temperature sensor, a pyrolysis layer temperature sensor and a reduction layer temperature sensor which are spaced from each other from top to bottom; the slag section is provided with a slag layer temperature sensor; the solution section is provided with a solution upper layer temperature sensor and a solution lower layer temperature sensor.
7. The plasma gasification and melting integrated furnace according to claim 1, wherein the oxidation section comprises a water cooling jacket and support rib plates, the support rib plates are installed at the outer side of the water cooling jacket, and the plasma generators are respectively arranged in the circumferential direction around the water cooling jacket.
8. The plasma gasification and melting integrated furnace of claim 7, wherein the water-cooling sleeve is provided with an oxide layer temperature sensor.
9. The integrated furnace of claim 1, wherein a heating element and a flow channel temperature sensor are installed at an outlet of the outer flow channel, and the flow rate switch is adjacent to the heating element.
10. The plasma gasification and melting integrated furnace according to claim 1, wherein a flue communicated with the treatment cavity is arranged at the end part of the conversion section, a level meter is further installed at the top of the conversion section, and the outer flow channel comprises a flow hole, a lifting channel and a main flow channel.
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| CN201921684244.0U CN210832013U (en) | 2019-10-09 | 2019-10-09 | Plasma gasification and melting integrated furnace |
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| CN201921684244.0U CN210832013U (en) | 2019-10-09 | 2019-10-09 | Plasma gasification and melting integrated furnace |
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Effective date of registration: 20210408 Address after: 523000 Huakai building, 18 Shenghe Road, Dongguan City, Guangdong Province Patentee after: Chen Qinggao Address before: 523000 kapok Industrial Zone, Dongshan village, Qishi Town, Dongguan City, Guangdong Province Patentee before: Dongguan Zhongpu Environmental Technology Co.,Ltd. |
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