CN115446086A - Low-temperature micro negative pressure pyrolysis test device - Google Patents
Low-temperature micro negative pressure pyrolysis test device Download PDFInfo
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- CN115446086A CN115446086A CN202210889949.6A CN202210889949A CN115446086A CN 115446086 A CN115446086 A CN 115446086A CN 202210889949 A CN202210889949 A CN 202210889949A CN 115446086 A CN115446086 A CN 115446086A
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- screw conveyer
- reaction box
- box body
- discharge valve
- waste gas
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 43
- 239000002912 waste gas Substances 0.000 claims abstract description 23
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 230000008676 import Effects 0.000 claims abstract 2
- 238000005485 electric heating Methods 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 18
- 231100000719 pollutant Toxicity 0.000 abstract description 18
- 238000004804 winding Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/54—Heating elements having the shape of rods or tubes flexible
- H05B3/56—Heating cables
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a low-temperature micro-negative pressure pyrolysis test device, which comprises: a machine support, be equipped with the reaction box in the frame, screw conveyer, waste gas discharge pipe, air exhaust fan, screw conveyer passes the reaction box, spiral winding has ceramic electrical heating rope on the screw conveyer outer wall in the reaction box, screw conveyer is driven by variable frequency gear motor, be equipped with the feed inlet on the screw conveyer front end, the feed inlet top is equipped with the feeder hopper, link to each other through the feeding discharge valve between feed inlet and the feeder hopper, be equipped with discharge gate and pressure sensor on the screw conveyer rear end, be equipped with ejection of compact discharge valve on the discharge gate, the waste gas discharge pipe lower extreme penetrates and communicates with screw conveyer in the reaction box mutually, waste gas discharge pipe upper end links to each other with air exhaust fan import, be equipped with temperature sensor on the waste gas discharge pipe, be equipped with the controller in the frame. The low-temperature micro negative pressure pyrolysis test device can perform pyrolysis tests on various pollutants, is safe and reliable, and can prevent harmful gas generated by pyrolysis from escaping outwards.
Description
Technical Field
The invention relates to the technical field of ship repair and construction and pyrolysis, in particular to a low-temperature micro-negative pressure pyrolysis test device.
Background
In recent years, with the rapid development of the marine vessel industry, a large number of vessels are manufactured and put into use. Meanwhile, a large amount of pollutants such as paint waste residues, ship repair surface waste residues and ship repair sludge generated in the ship manufacturing and repairing process are accompanied.
Along with the enhancement of environmental protection consciousness, the control strength has been increaseed to the emission of pollutant to and discharge the index and more high, the post treatment expense is also more and more high. Under the environment, corresponding treatment processes are required to be provided for different pollutants. However, a test device which can be used for pollutant treatment tests is lacked at present, so that the pollutant treatment process cannot be verified and perfected.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the low-temperature micro-negative pressure pyrolysis test device can perform pyrolysis tests on various pollutants, is safe and reliable, and can prevent harmful gas generated by pyrolysis from escaping outwards.
In order to solve the problems, the technical scheme adopted by the invention is as follows: a low-temperature micro negative pressure pyrolysis test device comprises: the frame, its characterized in that: the device is characterized in that a reaction box body is arranged on a rack, a screw conveyor, a waste gas discharge pipe and an air exhaust fan are arranged, the screw conveyor penetrates through the reaction box body in the front-back direction, the front end and the rear end of the screw conveyor extend out of the reaction box body, a ceramic electric heating rope is spirally wound on the outer wall of the screw conveyor in the reaction box body, the screw conveyor is driven by a variable-frequency speed reduction motor arranged on the front end of the screw conveyor, an upward arranged feed inlet for feeding is further arranged on the front end of the screw conveyor, a feed hopper is arranged above the feed inlet, the feed inlet and the feed hopper are connected through a feeding discharge valve, a downward arranged discharge outlet and a pressure sensor for detecting the pressure of the inner cavity of the screw conveyor are arranged on the rear end of the screw conveyor, a discharge valve is arranged on the discharge outlet, the lower end of the waste gas discharge pipe penetrates into the reaction box body and is communicated with the inner cavity of the screw conveyor, the upper end of the waste gas discharge pipe is connected with an inlet of the variable-frequency air exhaust fan, an outlet of the air exhaust fan is used for being connected with a waste gas treatment device, a temperature sensor for detecting the waste gas temperature of the waste gas in the pipe, a controller is further arranged on the rack, a frequency converter of the frequency reduction motor, the ceramic electric heating rope, the discharge valve and a temperature sensor is connected with a discharge sensor, and a temperature sensor control sensor for controlling the discharge sensor, and a temperature sensor for controlling the discharge sensor.
Further, the aforesaid low temperature micro negative pressure pyrolysis test device, wherein: the feeding discharge valve and the discharging discharge valve are star-shaped discharge valves, and a driving motor of the star-shaped discharge valves is connected with the control end of the controller.
Further, aforementioned low temperature micro negative pressure pyrolysis test device, wherein: a supporting frame for supporting the screw conveyer is arranged in the reaction box body.
Further, aforementioned low temperature micro negative pressure pyrolysis test device, wherein: the reaction box body is a rectangular box body, and the heat insulation layers are attached to the outer sides of the periphery of the reaction box body.
Further, the aforesaid low temperature micro negative pressure pyrolysis test device, wherein: the air exhaust fan is positioned above the reaction box body.
The invention has the advantages that: the low-temperature micro negative pressure pyrolysis test device is simple in structure, high in automation degree and convenient to operate, and can control the reaction time of pollutants in the reaction box body by adjusting the rotating speed of the screw conveyor so as to meet the reaction requirements of different pollutants; the non-combustion heating device adopts a ceramic electric heating rope for heating, and the ceramic electric heating rope is spirally wound on the outer side of the spiral conveyor and directly transmits heat to pollutants; the controller can adjust a frequency converter of the air exhaust fan through signals acquired by the pressure sensor so as to control the rotating speed of the air exhaust fan, control the internal pressure of the screw conveyor in a micro-negative pressure state, avoid the overflow of toxic and harmful gases generated by pyrolysis and avoid secondary pollution to the surrounding environment; the controller can adjust the power of the ceramic electric heating rope through signals collected by the temperature sensor, and further control the temperature inside the screw conveyer within the range of 500-700 ℃, so that the pollutants can be subjected to low-temperature cracking reaction, and coking of the pollutants in the screw conveyer is prevented.
Drawings
FIG. 1 is a schematic structural diagram of a low-temperature micro-negative pressure pyrolysis test device according to the present invention.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and the accompanying drawings.
As shown in fig. 1, a low-temperature micro-negative pressure pyrolysis test device comprises: a frame 1, a reaction box 2 is arranged on the frame 1, a screw conveyor 3, a waste gas discharge pipe 4, an air exhaust fan 5, the screw conveyor 3 passes through the reaction box 2 in the front-back direction, the front end and the back end of the screw conveyor 3 both extend out of the reaction box 2, a ceramic electric heating rope 6 is spirally wound on the outer wall of the screw conveyor 3 in the reaction box 2, the screw conveyor 3 is driven by a variable-frequency speed reducing motor 7 arranged on the front end of the screw conveyor 3, a feed inlet 8 arranged upwards for feeding is also arranged on the front end of the screw conveyor 3, a feed hopper 9 is arranged above the feed inlet 8, the feed inlet 8 and the feed hopper 9 are connected through a feeding discharge valve 10, a discharge outlet 11 arranged downwards and a pressure sensor 12 for detecting the pressure in the inner cavity of the screw conveyor 3 are arranged on the back end of the screw conveyor 3, a discharge valve 13 is arranged on the discharge outlet 11, the lower end of the waste gas discharge pipe 4 penetrates into the reaction box 2 to be communicated with the inner cavity of the screw conveyor 3, the upper end of the waste gas 4 is connected with the inlet of the variable-frequency fan 5, an outlet of the waste gas treatment device 5, an exhaust fan 5 is connected with an exhaust gas discharge pipe, a waste gas discharge pipe 4, a waste gas discharge device, a waste gas discharge pipe 15 is arranged on the exhaust fan 15, a temperature sensor 15 is arranged on the exhaust fan 15, a temperature control frame 15 connected with the ceramic electric heating control motor 15, a temperature control motor 14 connected with the discharge motor 15, a temperature control discharge motor 15 connected with the discharge outlet 12 of the ceramic electric heating control discharge motor 7, and a temperature control discharge motor 15.
In the embodiment, the feeding discharge valve 10 and the discharging discharge valve 13 are both star-shaped discharge valves, and the star-shaped discharge valves can smoothly discharge materials and can well seal when the materials are not discharged; the driving motor of the star-shaped discharge valve is connected with the control end of the controller 15, so that the controller 15 can control the start and stop of the feeding discharge valve 10 and the discharging discharge valve 13.
A support frame 16 for supporting the screw conveyor 3 is provided in the reaction tank body 2. Reaction box 2 is the rectangle box, all pastes on reaction box 2 the outside all around and is equipped with insulating layer 17, sets up reaction box 2, is for the protection on the one hand, and on the other hand is for keeping warm, sets up insulating layer 17 in reaction box 2's the outside and is for better heat preservation and prevent to scald. The air exhaust fan 5 is positioned above the reaction box body 2, so that the exhaust of waste gas is facilitated.
The during operation, put into to feeder hopper 9 the pollutant of the pyrolytic reaction of waiting to test, then controller 15 can control feeding discharge valve 10 and start, make the pollutant get into among screw conveyer 3, screw conveyer 3 can start after that with pollutant auger delivery to reaction box 2, then ceramic electrical heating rope 6 can start to heat the pollutant, make the pollutant can take place pyrolytic reaction, when the pyrolysis is accomplished, screw conveyer 3 can carry the rear end department to screw conveyer 3 with the residuum, then controller 15 can control ejection of compact discharge valve 13 and start and discharge the residuum. The tail gas generated by pyrolysis enters the waste gas discharge pipe 4 and is pumped and discharged to the waste gas treatment device by the air exhaust fan 5 for treatment.
The above process is carried out by the controller 15 according to the pyrolysis condition of the pollutant, and the temperature and the residence time required by the reaction are set by the PLC programmable device arranged in the controller. The reaction time of the contaminants in the reaction tank 2 can be controlled by adjusting the rotation speed of the screw conveyor 3 for different contaminants by the controller 15. After the ceramic electric heating rope 6 starts to work, the temperature sensor 14 detects the temperature of the waste gas in real time, and the temperature signal adjusts the heating power of the ceramic electric heating rope 6 through a control program, so that the internal reaction temperature of the screw conveyor 3 is ensured to be kept within a required temperature range. The controller 15 adjusts the rotation speed of the air extractor 5 according to the pressure detection data fed back by the pressure sensor 12, so that the pressure in the inner cavity of the screw conveyor 3 is always kept in a set negative pressure state.
Claims (5)
1. A low-temperature micro negative pressure pyrolysis test device comprises: the frame, its characterized in that: a reaction box body, a screw conveyer, a waste gas discharge pipe and an air exhaust fan are arranged on a frame, the screw conveyer passes through the reaction box body along the front and back directions, the front end and the back end of the screw conveyer both extend out of the reaction box body, a ceramic electric heating rope is spirally wound on the outer wall of the screw conveyer in the reaction box body, the screw conveyer is driven by a variable frequency speed reduction motor arranged on the front end of the screw conveyer, an upward arranged feed inlet for feeding is also arranged on the front end of the screw conveyer, a feed hopper is arranged above the feed inlet, the feed inlet and the feed hopper are connected through a feeding discharge valve, a downward arranged discharge outlet and a pressure sensor for detecting the pressure of the inner cavity of the screw conveyer are arranged on the back end of the screw conveyer, be provided with ejection of compact discharge valve on the discharge gate, exhaust gas discharge pipe's lower extreme penetrates in the reaction box and is linked together with screw conveyer's inner chamber, exhaust gas discharge pipe's upper end links to each other with the import of variable frequency's air exhaust fan, air exhaust fan's export is used for linking to each other with exhaust gas treatment device, still be provided with the temperature sensor who is used for detecting intraductal waste gas temperature on exhaust gas discharge pipe, still be provided with the controller in the frame, air exhaust fan's converter, frequency conversion gear motor, pottery electrical heating rope, ejection of compact discharge valve, the feeding discharge valve links to each other with the control end of controller respectively, temperature sensor, pressure sensor links to each other with the information acquisition end of controller respectively.
2. The low-temperature micro-negative pressure pyrolysis test device according to claim 1, characterized in that: feeding discharge valve and ejection of compact discharge valve are star type discharge valve, and the driving motor of star type discharge valve links to each other with the control end of controller.
3. The apparatus according to claim 1 or 2, wherein: a supporting frame for supporting the screw conveyer is arranged in the reaction box body.
4. The low-temperature micro-negative pressure pyrolysis test device according to claim 1 or 2, characterized in that: the reaction box body is a rectangular box body, and the heat insulation layers are attached to the outer sides of the periphery of the reaction box body.
5. The apparatus according to claim 1 or 2, wherein: the air exhaust fan is positioned above the reaction box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210889949.6A CN115446086A (en) | 2022-07-27 | 2022-07-27 | Low-temperature micro negative pressure pyrolysis test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210889949.6A CN115446086A (en) | 2022-07-27 | 2022-07-27 | Low-temperature micro negative pressure pyrolysis test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115446086A true CN115446086A (en) | 2022-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210889949.6A Pending CN115446086A (en) | 2022-07-27 | 2022-07-27 | Low-temperature micro negative pressure pyrolysis test device |
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| CN (1) | CN115446086A (en) |
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-
2022
- 2022-07-27 CN CN202210889949.6A patent/CN115446086A/en active Pending
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