CN210320953U - Water and organic matter removing device for materials - Google Patents
Water and organic matter removing device for materials Download PDFInfo
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- CN210320953U CN210320953U CN201921446274.8U CN201921446274U CN210320953U CN 210320953 U CN210320953 U CN 210320953U CN 201921446274 U CN201921446274 U CN 201921446274U CN 210320953 U CN210320953 U CN 210320953U
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Abstract
The utility model relates to a device for removing water and organic substances from materials, which mainly comprises a drying oven, a calcining oven, a cooling oven, a dust filter, a tail gas purifying oven, a VOC detecting device, a waste heat recovery device, a large-flow atmosphere PID automatic control system and an electric control system, wherein the drying oven evaporates the moisture in the materials, the calcining oven decomposes the organic substances in the materials and turns the organic substances into volatile organic substances to be discharged, the cooling oven mainly functions to cool the high-temperature materials, the utility model adopts a rotary electric furnace to remove the moisture, the organic substances and the like in the materials in an electric heating mode, and the electric control system is used to monitor the working state, the control parameters and the process parameters of the whole device, has high automation degree and also has the functions of waste heat recovery and atmosphere control, and the generated waste gas and the like are discharged after being purified or filtered, thereby meeting the requirement of environmental protection, meanwhile, the device can be used for continuous production, and has a compact structure and remarkable economic benefit.
Description
Technical Field
The utility model relates to a material processing technology field, concretely relates to dewatering of material and remove organic matter device.
Background
In industrial production, there are many materials to be heated to remove water and organic substances, the traditional method is to use coal or gas for heating, but with the requirement of national environmental protection, the traditional heating device using coal or gas gradually loses the market.
In the field of solar energy, a large amount of waste materials are generated during cutting and grinding of single crystals and polycrystalline silicon, and the recovery of high-purity silicon, polyethylene glycol and silicon carbide in cutting waste materials has important significance for reducing environmental pollution and improving resource utilization rate. At present, most of the modes for purifying high-purity silicon in cutting waste materials in China are physical or chemical methods, dust, waste gas and the like generated in the treatment process are difficult to effectively treat, environmental pollution is easy to generate, the automation degree is low, and the requirement of batch production cannot be met.
SUMMERY OF THE UTILITY MODEL
To prior art's defect, the utility model aims at providing a dewatering of material and remove organic matter device has advantages such as environmental protection and energy saving, degree of automation height, can be used to continuous mass production.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
A device for removing water and organic substances from materials is composed of baking furnace, calcining furnace, cooling furnace, dust filter, tail gas purifying furnace,The system comprises a VOC detection device, a waste heat recovery device, a large-flow atmosphere PID automatic control system and an electric control system; the drying furnace, the calcining furnace and the cooling furnace are sequentially connected and obliquely arranged, the oblique direction is that the height of one side of the material inlet is higher than that of one side of the material outlet, and the material is discharged from the material outlet after sequentially passing through the drying furnace, the calcining furnace and the cooling furnace from the material inlet; the drying furnace is mainly used for heating materials to remove moisture in the materials, a dust filter is connected to an exhaust port of the drying furnace, the calcining furnace is mainly used for heating the materials to remove organic matters in the materials, the cooling furnace is mainly used for cooling the materials to a temperature required by the process, the cooling furnace is divided into an air cooling section and a water cooling section, a spraying device is arranged outside the water cooling section, cooling is carried out by using cooling water, the air cooling section uses a fan to suck out heat released by the materials, and waste heat is sent into the drying furnace for recycling through a waste heat recycling device; the upper part of the outlet of the cooling furnace material pipe is a nitrogen inlet, the nitrogen inlet is connected with a nitrogen flow controller, nitrogen enters the material pipe of the calcining furnace from the upper port of the inlet of the cooling furnace material pipe and the upper port of the outlet of the material pipe of the calcining furnace after passing through the cooling furnace material pipe, organic waste gas generated by the nitrogen and the materials in the calcining furnace enters the tail gas purifying furnace through the upper port of the inlet of the material pipe of the calcining furnace, is purified and is discharged after being detected to be qualified by a VOC detection device; the large-flow atmosphere PID automatic control system comprises a gas detector and a nitrogen flow controller, the gas detector is used for detecting the contents of H2, O2 and CO in the exhaust gas discharged from the calcining furnace, the nitrogen flow controller is controlled in real time according to the contents of each atmosphere to control the flow of the nitrogen, the large-flow atmosphere PID automatic control is realized, and the H2, O2 and CO in the exhaust gas are ensured to be in the exhaust gas2、O2And the content of CO meets the requirements of the process and safe production; the electric control system is controlled by a networked PLC, is respectively connected with each part, and monitors and controls the working state, control parameters and process parameters of the whole equipment in real time.
Further, the drying furnace heats the materials to 100-150 ℃, and the generated steam and dust are discharged through an upper exhaust port of a material inlet of the drying furnace and enter a dust filter to be filtered and then are discharged from an air outlet; the calcining furnace heats the materials to 800 ℃ for 700-; the tail gas purification stove can heat waste gas to 750-.
Furthermore, the spraying device outside the water cooling section of the cooling furnace comprises a spraying water inlet, a solenoid valve, a pressure regulating valve, a spraying water outlet and a steam discharge outlet, cooling water in the spraying water inlet is controlled to be on or off by the solenoid valve I, the water pressure of the cooling water is controlled by the pressure regulating valve, the cooling water enters the spraying device after being detected by the water pressure, the material is cooled by spraying water on the outer wall of the material pipe, generated waste water is discharged from the spraying water outlet, and generated steam is discharged from the steam discharge outlet.
Furthermore, the drying furnace, the calcining furnace and the cooling furnace are all rotary electric furnaces and are connected with an electrical control system, each rotary electric furnace comprises a high-temperature spiral feeder, a rotary material pipe, a furnace body, an inclination angle adjusting mechanism, an electric heater and a thermocouple, the feeding motor drives the high-temperature spiral feeder to rotate, materials entering from a material inlet are pushed into the rotary material pipe, the rotary material pipe mainly comprises a rotary motor, a rotary mechanism, a material pipe and a supporting mechanism, the rotary motor drives the material pipe to rotate on the supporting mechanism through the rotary mechanism, the materials in the material pipe are driven to rotate together, and the material pipe has a certain inclination angle, so that the materials are driven to move forwards; the electric heaters on the lower part or the periphery of the outer wall of the material pipe heat the materials in the material pipe, the heating temperature is detected by a thermocouple outside the material pipe, the electric control system realizes the closed-loop control of the heating temperature, the furnace body outside the material pipe plays a role in heat preservation, and the inclination angle adjusting mechanism can adjust the inclination angle theta of the whole rotary furnace, so that the advancing speed of the materials in the rotary material pipe is adjusted.
Furthermore, a water cooling device is arranged outside the spiral feeder of the cooling furnace, and the water cooling water inlet and the water cooling water outlet are provided with ball valves for controlling cooling water flow, so that materials can be cooled, and meanwhile, the influence of the dissipated heat on the normal work of the feeding motor III is prevented.
Furthermore, the electric control system mainly comprises a PLC, a remote I/O module I, a remote I/O module II, a remote I/O module III, an industrial personal computer and a Wincc monitoring interface, wherein input equipment and output equipment of the drying furnace are connected on an input/output interface of the PLC, input equipment and output equipment of the calcining furnace are connected on an input/output interface of the remote I/O module I, input equipment and output equipment of the cooling furnace are connected on an input/output interface of the remote I/O module II, input equipment and output equipment of the tail gas purifying furnace are connected on an input/output interface of the remote I/O module III, each remote I/O module is connected to a CPU module of the PLC through a Profinet network and is subjected to centralized control, the PLC is connected to the industrial personal computer through the Ethernet network, the monitoring interface is compiled on the industrial personal computer by using Wincc software, and the working state of the whole equipment is controlled, And controlling parameters and process parameters to monitor in real time.
Furthermore, the input device of the drying oven comprises a thermocouple, and the output device of the drying oven comprises an electric heater, a feeding motor, a rotary motor, a waste heat blower and a frequency converter; the input equipment of the calcining furnace comprises a thermocouple, and the output equipment of the calcining furnace comprises an electric heater, a feeding motor, a rotary motor and a frequency converter; the input equipment of the cooling furnace comprises a thermocouple and a water pressure meter, and the output equipment of the cooling furnace comprises an electromagnetic valve, a flow controller, a feeding motor, a rotary motor and a frequency converter; the input equipment of the tail gas purification furnace comprises a thermocouple, a gas detector and a VOC detector, and the output equipment of the tail gas purification furnace comprises an electric heater, a waste gas blower and a frequency converter.
Furthermore, the electric control system controls the rotating speed of each feeding motor and each rotating motor through a frequency converter, detects the material temperature through a thermocouple and controls the output of the electric heater in real time, thereby realizing the closed-loop control of the heating temperature of each furnace, controls the rotating speed of the waste heat blower through the frequency converter, and controls the rotating speed of the waste gas blower for the waste gas to enter the tail gas purification furnace through the frequency converter.
Advantageous effects
1. The utility model adopts three independent rotary electric furnaces (a drying furnace, a calcining furnace and a cooling furnace) to respectively realize the functions of dewatering, removing organic matters and cooling materials, so that the control of each process is more convenient, the parameter control is more accurate, and the adopted rotary electric furnace heats the materials by utilizing electric energy, the heat source can not generate waste gas, thereby being beneficial to environmental protection; the device has compact structure and high production efficiency, and can realize continuous batch production of materials.
2. The utility model adopts the dust filter to filter the steam and dust generated in the drying furnace and then discharge the steam and dust; the waste gas that contains nitrogen gas and volatile organic compounds just discharges away after tail gas purification stove's high temperature purification, VOC detects qualified, reduces the harm that produces the environment, satisfies the environmental protection requirement.
3. The utility model discloses utilize the nitrogen protection to prevent the material oxidation under high temperature, decompose the organic matter in the material and volatilize nitrogen gas simultaneously, reach the purpose of protection material, getting rid of organic matter under the high temperature to adopt large-traffic atmosphere PID automatic control system, in order to ensure H in the waste gas2、O2And the content of CO meets the requirements of the process and safe production.
4. The utility model discloses still be provided with waste heat recovery device between cooling furnace and drying furnace, will be used for the heating of supplementary drying furnace from the waste heat recovery of cooling furnace suction, realized the recovery and the utilization of waste heat, reduced energy resource consumption.
5. The utility model discloses a networked PLC carries out electrical control, operating condition, control parameter, technological parameter etc. that can each equipment of real time monitoring to realized functions such as the device's informationization, networking, parameterization control, makeed whole device degree of automation height, can realize continuity batch production.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
fig. 2 is a schematic structural diagram of the present invention;
fig. 3 is a front view of an embodiment of the present invention;
fig. 4 is a top view of an embodiment of the invention;
fig. 5 is an electrical schematic block diagram of an embodiment of the invention;
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a dewatering of material and remove Organic matter device, figure 1 has illustrated with the form of block diagram the utility model discloses a fundamental principle and each parts connection relation, figure 2 has demonstrated with the mode of schematic diagram the utility model discloses a fundamental structure and main theory of operation, the device mainly comprise drying furnace 7, calcining furnace 12, cooling furnace 17, tail gas purification stove 30, dust filter 4, VOC (Volatile Organic Compounds promptly) detection device 32, waste heat recovery device, large-traffic atmosphere PID automatic control system and electrical control system. The working process of the whole device mainly relates to a material processing loop, a waste heat recovery loop, a drying furnace waste gas processing loop, a nitrogen protection and organic matter and waste gas removing purification loop, a water cooling loop and the like, wherein each loop is automatically controlled by an electrical control system, and the functions of informatization, networking, parametric control and the like of the whole device are realized.
As shown in fig. 1 and 2, the drying furnace 7, the calcining furnace 12 and the cooling furnace 17 of the present invention are sequentially connected and all inclined, the inclination direction is the height of one side of the feed port higher than the height of one side of the discharge port, the drying furnace 7, the calcining furnace 12 and the cooling furnace 17 all adopt the rotary electric furnace, which can meet the requirement of mass continuous production, and all comprise a high temperature spiral feeder, a rotary material pipe, a furnace body, an inclination angle adjusting mechanism, an electric heater, a thermocouple, etc., and work under the control of an electric control system; the feeding motor drives the high-temperature spiral feeder to rotate, and materials entering the material inlet are pushed into the rotary material pipe; the rotary material pipe mainly comprises a rotary motor, a rotary mechanism, a material pipe, a supporting mechanism and the like, wherein the rotary motor drives the material pipe to rotate on the supporting mechanism through the rotary mechanism to drive the material in the material pipe to rotate together, and the material pipe is driven to move forwards due to a certain inclination angle; the electric heaters at the lower part or the periphery of the outer wall of the material pipe play a role in heating the material in the material pipe, the heating temperature of the electric heaters is detected by a thermocouple outside the material pipe, and the electric control system realizes closed-loop control of the heating temperature; the furnace body is arranged outside the material pipe, so that the heat preservation effect is achieved; the inclination angle adjusting mechanism can adjust the inclination angle theta of the whole rotary furnace, so that the advancing speed of materials in the rotary material pipe is adjusted, the larger the inclination angle is, the faster the advancing speed is, the smaller the inclination angle is, the slower the advancing speed is, and the inclination angle theta can be adjusted according to production requirements.
The materials sequentially pass through a drying furnace 7, a calcining furnace 12 and a cooling furnace 17 from a feeding hole 1 and then are discharged from a discharging hole 33, wherein the drying furnace section heats the materials to 150 ℃ for removing moisture in the materials, and the generated steam, dust and the like are discharged through an upper discharging hole of a material inlet of the drying furnace and enter a dust filter 4 to be filtered and then are discharged from a gas outlet; the calcining furnace section heats the materials to 800 ℃ below zero, so that organic matters in the materials are decomposed and changed into volatile organic matters to be discharged, and the generated waste gas is discharged through the upper end opening of the material pipe inlet of the calcining furnace and is output to the tail gas purifying furnace 30; the tail gas purification stove can heat waste gas to 750-.
The cooling furnace section is used for cooling the materials to the temperature required by the process. The furnace body of the cooling furnace 17 is divided into two sections, the front section is an air cooling section, high-temperature gas released by materials in the material pipe can be sucked out through the waste heat blower 13, then enters the material pipe of the drying furnace from the upper port of the outlet of the drying material pipe through the waste heat recovery device, the materials in the drying material pipe can be heated, and the effect of waste heat recovery is achieved; the rear section of the cooling furnace body is a water cooling section, and the spraying device sprays water to the outer wall of the material pipe, so that the material is quickly cooled to a set temperature.
The upper part of the outlet of the cooling furnace material pipe is provided with a nitrogen inlet 26, and nitrogen enters from the upper port of the inlet of the cooling furnace material pipe and the upper port of the outlet of the material pipe of the calcining furnace after passing through the cooling furnace material pipeFeeding into a material pipe of a calcining furnace 12; introducing nitrogen into the cooling furnace section and the calcining furnace section, so as to prevent the oxidation of the material at high temperature on one hand, and decompose and volatilize the organic matters in the material into gas at high temperature on the other hand, thereby achieving the purpose of removing the organic matters in the material; the waste gas generated by the calcining furnace contains H and nitrogen2、O2And CO, and the like. The safe concentration of hydrogen is less than 4%, otherwise, explosion is easy to occur; the oxygen content is less than 5%, otherwise the material is easily oxidized. Therefore, sufficient nitrogen is introduced to reduce the hydrogen and oxygen content of the off-gas to ensure safety of production and to protect the material from oxidation. Therefore, the utility model discloses a gas detector 31 detects H in the exhaust waste gas in the calciner2、O2And the content of CO, and controlling the flow of nitrogen by controlling the nitrogen flow controller 28 in real time according to the content of each atmosphere, so as to realize the automatic control of large-flow atmosphere PID (proportion integration differentiation) to ensure H in the waste gas2、O2And the content of CO meets the requirements of the process and safe production; organic waste gas generated by nitrogen and materials enters the tail gas purification furnace 30 through the upper port of the inlet of the material pipe of the calcining furnace, and is discharged after being purified.
The electric control system is controlled by a networked PLC, monitoring information is transmitted to a monitoring interface consisting of an industrial personal computer and Wincc software, and the rotating speed of each feeding motor and each rotating motor can be controlled by a frequency converter; the output of the electric heater can be controlled in real time by detecting the material temperature through the thermocouple, so that the closed-loop control of the heating temperature of each furnace is realized; the rotating speed of the waste heat recovery fan can be controlled by the frequency converter, the rotating speed of the fan for enabling waste gas to enter the tail gas purification furnace can be controlled by the frequency converter, the flow of nitrogen and the flow of cooling water can be automatically controlled by the PLC, and therefore the functions of informatization, networking, parametric control and the like of the device are achieved.
Fig. 3 and 4 are a front view and a top view of an embodiment of the present invention, and the work flow is as follows: the material enters a screw feeder I6 through a feeding hole 1 and enters a material pipe of a drying furnace 7 under the pushing of a feeding motor I2, and the inclination angle of the drying furnace 7 is adjustable and can be adjustedThe tilt angle can be detected by the angle sensor 3; the electric heater and the waste heat recovery device are used for heating materials by waste heat sent by the electric heater and the waste heat recovery device, the thermocouple 8 is used for detecting the temperature of the materials, and the rotary motor I5 is used for driving the material pipe of the drying furnace to rotate so as to uniformly heat the materials and move the materials forwards; under the control of an electrical control system, the heating temperature of the materials in the drying furnace 7 is controlled to be 100-900 m, the temperature is controlled to be 150 ℃, the moisture in the dried materials is aimed to be dried, the generated steam, dust and the like are discharged through an upper port at the inlet of the drying furnace, enter the dust filter 4 for filtering, and then are discharged into the atmosphere through an air outlet, and the exhaust pipeline and the dust filter have the capacity of treating the waste gas of 600-900m3/h。
And the second feeding motor 9 pushes the materials sent out by the drying furnace 7 into a material pipe of the calcining furnace 12 through a second screw feeder 11. The electric heater heats the materials, the thermocouple detects the temperature of the materials, and the second rotary motor 10 drives the material pipe of the calcining furnace to rotate, so that the materials are uniformly heated and move forwards. Under the control of the electric control system, the heating temperature of the materials in the calciner is controlled to be 700-. The exhaust gas purifying furnace 30 can heat the exhaust gas to 750-; waste gas just discharges away by the gas outlet after purifying and passing through VOC detection is qualified, and VOC detection device 32 can be the VOC detector. The capacity of the waste gas pipeline for treating waste gas is 4200m3/h。
A third feeding motor 14 pushes the material sent out by the calcining furnace 12 into a material pipe of a cooling furnace 17 through a third screw feeder 15, and a third rotary motor 16 drives the material pipe of the cooling furnace to rotate so that the material is uniformly cooled and moves forwards; a water cooling device is arranged outside the third screw feeder 15, ball valves are arranged on the water cooling water inlet 18 and the water cooling water outlet 19 to control cooling water flow, so that materials can be cooled, meanwhile, the influence of the emitted heat on the normal work of the third feeding motor 14 is prevented, and the maximum flow of a cooling water pipeline is 30L/min; the body of the cooling furnace 17 is divided into two sections, the front section is an air cooling section, which is beneficial toThe waste heat blower 13 can suck out the heat released by the materials in the material pipe, and the heat enters the material pipe of the drying furnace 7 through the upper port of the material pipe outlet of the drying furnace, so that the materials in the material pipe of the drying furnace can be heated, and the effect of waste heat recovery is achieved. The maximum flow of the waste heat recovery pipeline is 60 m3H is used as the reference value. The rear section of the cooling furnace body is a water cooling section, and the spraying device sprays water to the outer wall of the material pipe, so that the material is quickly cooled to a set temperature. Cooling water in a spraying water inlet 21 is controlled to be switched on and off by a first electromagnetic valve 22, the water pressure of the cooling water is controlled by a pressure regulating valve 23, the cooling water enters a spraying device after being detected by the water pressure, the material is cooled by spraying water on the outer wall of a material pipe, generated waste water is discharged from a spraying water outlet 24, generated water vapor is discharged from a steam discharge outlet 25, and the maximum flow of the cooling water pipeline is 0.5 m3And/min. The material is cooled in the cooling furnace to a set temperature and is discharged from a discharge port of the cooling furnace 17 to form a finished product or is led to the next production line.
Nitrogen enters the cooling furnace through a nitrogen inlet 26 at the upper end of a material outlet of the cooling furnace 17, a second electromagnetic valve 27 can control the on-off of the nitrogen, and a flow controller 28 can detect and control the flow of the nitrogen. After passing through the cooling furnace material pipe, nitrogen enters the material pipe of the calcining furnace through the upper port of the inlet of the cooling furnace material pipe and the upper port of the outlet of the calcining furnace material pipe. The nitrogen can also directly enter the material pipe of the calcining furnace 12 through the upper port of the material pipe outlet of the calcining furnace through the on-off control of the electromagnetic valve III 29. The gas detector 31 can detect H in the exhaust gas discharged from the calciner2、O2And the content of CO, and the flow controller 28 is controlled in real time according to the content of each gas, so that the flow of nitrogen is adjusted, the content of each atmosphere in the waste gas is controlled to meet the requirements of the process and safety production (the content of hydrogen is not higher than 4 percent, and the content of oxygen is not higher than 5 percent), and the large-flow atmosphere PID automatic control is realized. When the flow controller 28 adjusts the nitrogen flow to be maximum and the content of each atmosphere in the waste gas still does not reach the standard, the electromagnetic valve 29 is opened to allow the nitrogen to directly enter the calcining furnace, so that the content of the nitrogen is further improved to reduce the content of hydrogen and oxygen, and the content of each atmosphere in the waste gas reaches the design requirement, thereby ensuring the safe production of field equipment and ensuring the safe production of the field equipment at high temperatureThe materials can not be oxidized, and the organic matters in the materials can be fully volatilized at high temperature, so that the aim of removing the organic matters in the materials is fulfilled. The maximum flow of nitrogen input is 120m3H is used as the reference value. Under the action of the exhaust blower 20, organic exhaust gas generated by nitrogen and materials enters the tail gas purifying furnace 30 through the upper port of the inlet of the material pipe of the calciner, and is discharged after being purified.
The electrical control system schematic diagram of the present invention is shown in fig. 5. The electric control system mainly comprises an S71500PLC, a remote I/O module I, a remote I/O module II, a remote I/O module III, an industrial personal computer, a Wincc monitoring interface and the like. Input equipment (including a thermocouple and the like) and output equipment (including an electric heater, a motor, a blower, a frequency converter and the like) of the drying furnace are connected to an input/output interface of the S71500PLC, input equipment (including a thermocouple and the like) and output equipment (including an electric heater, a motor, a frequency converter and the like) of the calcining furnace are connected to an input/output interface of the remote I/O module I, input equipment (including a thermocouple, a water pressure meter and the like) and output equipment (including an electromagnetic valve, a flow controller, a motor, a frequency converter and the like) of the cooling furnace are connected to an input/output interface of the remote I/O module II, and input equipment (including a thermocouple, a gas detector, a VOC detector and the like) and output equipment (including an electric heater, a blower, a frequency converter and the like) of the tail gas purifying furnace are connected to an input. Each remote I/O module is connected to the CPU module of the S71500PLC through the Profinet network, and is centrally controlled by the CPU module. The S71500PLC is connected to an industrial personal computer through an Ethernet network, a monitoring interface is compiled on the industrial personal computer by using Wincc software, and the working state, control parameters, process parameters and the like of the whole equipment are monitored in real time.
Specifically, the electric control system can control the rotating speed of each feeding motor and each rotating motor through a frequency converter; the output of the electric heater can be controlled in real time by detecting the material temperature through the thermocouple, so that the closed-loop control of the heating temperature of each furnace is realized; the rotating speed of the waste heat recovery fan can be controlled by the frequency converter, the rotating speed of the fan for enabling waste gas to enter the tail gas purification furnace can be controlled by the frequency converter, the flow of nitrogen and the flow of cooling water can be automatically controlled by the PLC, and therefore the functions of informatization, networking, parametric control and the like of the device are achieved.
The utility model discloses an advantage such as device environmental protection and energy saving, degree of automation height can be used to continuous mass production. The waste material generated in the cutting and grinding processes of the monocrystalline silicon and the polycrystalline silicon can be treated, and the moisture and organic matters in the waste material can be effectively removed, so that the subsequent recycling is facilitated, the environmental pollution is reduced, and the resource utilization rate is improved; the device can also be used for removing water and organic matters of other materials, and technological parameters such as heating temperature and the like and control parameters are adjusted according to actual needs to meet the requirements.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (8)
1. A device for removing water and organic matters from materials is characterized by mainly comprising a drying furnace, a calcining furnace, a cooling furnace, a dust filter, a tail gas purifying furnace, a VOC (volatile organic compound) detection device, a waste heat recovery device, a large-flow atmosphere PID (proportion integration differentiation) automatic control system and an electric control system;
the drying furnace, the calcining furnace and the cooling furnace are sequentially connected and obliquely arranged, the oblique direction is that the height of one side of the material inlet is higher than that of one side of the material outlet, and the material is discharged from the material outlet after sequentially passing through the drying furnace, the calcining furnace and the cooling furnace from the material inlet; the drying furnace is mainly used for heating materials to remove moisture in the materials, a dust filter is connected to an exhaust port of the drying furnace, the calcining furnace is mainly used for heating the materials to remove organic matters in the materials, the cooling furnace is mainly used for cooling the materials to a temperature required by the process, the cooling furnace is divided into an air cooling section and a water cooling section, a spraying device is arranged outside the water cooling section, cooling is carried out by using cooling water, the air cooling section uses a fan to suck out heat released by the materials, and waste heat is sent into the drying furnace for recycling through a waste heat recycling device; the upper part of the outlet of the cooling furnace material pipe is a nitrogen inlet, the nitrogen inlet is connected with a nitrogen flow controller, nitrogen enters the material pipe of the calcining furnace from the upper port of the inlet of the cooling furnace material pipe and the upper port of the outlet of the material pipe of the calcining furnace after passing through the cooling furnace material pipe, organic waste gas generated by the nitrogen and the materials in the calcining furnace enters the tail gas purifying furnace through the upper port of the inlet of the material pipe of the calcining furnace, is purified and is discharged after being detected to be qualified by a VOC detection device;
the large-flow atmosphere PID automatic control system comprises a gas detector and a nitrogen flow controller, and H in the exhaust gas discharged from the calcining furnace is detected by the gas detector2、O2And the content of CO, controlling the flow of nitrogen by controlling a nitrogen flow controller in real time according to the content of each atmosphere, realizing the automatic control of large-flow atmosphere PID, and ensuring H in the waste gas2、O2And the content of CO meets the requirements of the process and safe production;
the electric control system is controlled by a networked PLC and is respectively connected with each part, so that the working state, the control parameters and the process parameters of the whole water and organic matter removing device are monitored and controlled in real time.
2. The apparatus as claimed in claim 1, wherein the drying oven heats the material to 100-; the calcining furnace heats the materials to 800 ℃ for 700-; the tail gas purification stove can heat waste gas to 750-.
3. The apparatus as claimed in claim 1, wherein the spraying means outside the water cooling section of the cooling furnace comprises a spraying water inlet, a solenoid valve, a pressure regulating valve, a spraying water outlet and a steam outlet, the cooling water in the spraying water inlet is controlled by the solenoid valve, the water pressure of the cooling water is controlled by the pressure regulating valve, the cooling water enters the spraying means after the water pressure is detected, the material is cooled by spraying water to the outer wall of the material pipe, the generated waste water is discharged from the spraying water outlet, and the generated steam is discharged from the steam outlet.
4. The apparatus for removing water and organic substances from a material according to claim 1, wherein the drying oven, the calcining oven and the cooling oven are all rotary electric ovens and are connected to an electrical control system, each rotary electric oven comprises a high-temperature spiral feeder, a rotary material pipe, an oven body, an inclination angle adjusting mechanism, an electric heater and a thermocouple, the feeding motor drives the high-temperature spiral feeder to rotate, so as to push the material entering from the material inlet into the rotary material pipe, the rotary material pipe mainly comprises a rotary motor, a rotary mechanism, a material pipe and a supporting mechanism, the rotary motor drives the material pipe to rotate on the supporting mechanism through the rotary mechanism, so as to drive the material in the material pipe to rotate together, and the material pipe has a certain inclination angle, so as to drive the material to move forward; the electric heaters on the lower part or the periphery of the outer wall of the material pipe heat the materials in the material pipe, the heating temperature is detected by a thermocouple outside the material pipe, the electric control system realizes the closed-loop control of the heating temperature, the furnace body outside the material pipe plays a role in heat preservation, and the inclination angle adjusting mechanism can adjust the inclination angle theta of the whole rotary furnace, so that the advancing speed of the materials in the rotary material pipe is adjusted.
5. The apparatus for removing water and organic substances from materials according to claim 4, wherein a water cooling device is provided outside the screw feeder of the cooling furnace, and the water cooling inlet and the water cooling outlet are provided with ball valves to control the flow of cooling water, so as to cool the materials and prevent the heat emitted from affecting the normal operation of the feeding motor III.
6. The apparatus as claimed in claim 4, wherein the electrical control system is mainly composed of a PLC, a remote I/O module I, a remote I/O module II, a remote I/O module III, an industrial personal computer, and a Wincc monitoring interface, the input device and the output device of the drying oven are connected to the input/output interface of the PLC, the input device and the output device of the calciner are connected to the input/output interface of the remote I/O module I, the input device and the output device of the cooling oven are connected to the input/output interface of the remote I/O module II, the input device and the output device of the tail gas purifying oven are connected to the input/output interface of the remote I/O module III, each remote I/O module is connected to the CPU module of the PLC through a Profinet network, and is centrally controlled by the CPU, and the PLC is connected to the industrial personal computer through an Ethernet network, and compiling a monitoring interface on an industrial personal computer by using Wincc software, and monitoring the working state, control parameters and process parameters of the whole equipment in real time.
7. The apparatus for removing water and organic substances from a material according to claim 6, wherein the input device of the drying oven comprises a thermocouple, and the output device of the drying oven comprises an electric heater, a feeding motor, a rotary motor, a waste heat blower and a frequency converter; the input equipment of the calcining furnace comprises a thermocouple, and the output equipment of the calcining furnace comprises an electric heater, a feeding motor, a rotary motor and a frequency converter; the input equipment of the cooling furnace comprises a thermocouple and a water pressure meter, and the output equipment of the cooling furnace comprises an electromagnetic valve, a flow controller, a feeding motor, a rotary motor and a frequency converter; the input equipment of the tail gas purification furnace comprises a thermocouple, a gas detector and a VOC detector, and the output equipment of the tail gas purification furnace comprises an electric heater, a waste gas blower and a frequency converter.
8. The apparatus as claimed in claim 7, wherein the electric control system controls the rotation speed of each of the feeding motor and the rotary motor through a frequency converter, detects the temperature of the material through a thermocouple, and controls the output of the electric heater in real time, thereby realizing the closed-loop control of the heating temperature of each furnace, controls the rotation speed of the waste heat blower through a frequency converter, and controls the rotation speed of the waste gas blower for feeding the waste gas into the tail gas purifying furnace through a frequency converter.
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| CN201921446274.8U CN210320953U (en) | 2019-09-02 | 2019-09-02 | Water and organic matter removing device for materials |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398140A (en) * | 2019-09-02 | 2019-11-01 | 洛阳炬星窑炉有限公司 | A kind of water removal of material and remove organic matter device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398140A (en) * | 2019-09-02 | 2019-11-01 | 洛阳炬星窑炉有限公司 | A kind of water removal of material and remove organic matter device |
| CN110398140B (en) * | 2019-09-02 | 2024-05-07 | 洛阳炬星窑炉有限公司 | Device for removing water and organic matters from materials |
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