Automatic temperature measurement system for the outlet of thermal desorption equipment

Abstract

The present invention relates to the field of contaminated soil remediation equipment, and discloses an automatic temperature measurement system for a discharge port of a thermal desorption equipment, comprising a material receiving device (1), a temperature measuring device (2), a temperature measuring device protection device (3) and a driving device; the material receiving device provided with a material receiving port (4) and a material discharging port (5) is located below the discharge port (10) of the thermal desorption equipment, and the material receiving port and the material discharging port are respectively located at upper and lower positions of the material receiving device; the temperature measuring device protection device located below the material receiving device has an internal cavity and an upper opening connected to the cavity; the material receiving device is connected to the upper opening; the temperature measuring device is placed in the temperature measuring device protection device; the driving device drives the temperature measuring device protection device to rotate circumferentially to achieve material receiving and material discharging. The automatic temperature measurement system of the present invention can protect the temperature measuring device from being bent or damaged; the temperature measurement is accurate; the temperature measuring device can be quickly replaced without stopping the machine; the thermal desorption device is ensured to run continuously, the downtime is reduced, and the maintenance and repair costs are saved.

Description

Technical Field

[0001] The invention relates to the field of contaminated soil remediation equipment, and in particular to an automatic temperature measurement system for a discharge port of a thermal desorption device. Background Art

[0002] There are many large-scale organic pollution or organic and heavy metal contaminated sites in China. In the process of remediation of large organic pollution sites, thermal desorption equipment with large processing capacity is almost indispensable, and it is also the type of equipment that accounts for a large proportion of the site remediation equipment system. The thermal treatment capacity of the thermal desorption equipment mainly depends on the tons of contaminated soil repaired per hour, and whether the repaired soil is qualified mainly depends on the temperature control. The accuracy of temperature control determines the size of the contaminated soil qualification rate and the energy consumption, so it is very important to monitor the temperature of the thermal desorption equipment during operation.

[0003] When the thermal desorption equipment is running, the temperature of the rotary kiln is mainly monitored at two points: the hot forging temperature of the rotary kiln and the temperature of the outlet of the rotary kiln. The hot forging temperature of the rotary kiln mainly monitors the atmosphere temperature in the rotary kiln, and the outlet temperature monitors the temperature of the discharged material, which is a very important data for checking whether the soil is qualified for remediation.

[0004] In the prior art, the temperature of the discharge port is monitored by directly installing a temperature measuring device at the discharge port, and the material is directly and briefly in contact with the temperature measuring device for temperature measurement after flowing out of the discharge port. In the prior art, the temperature measuring device usually adopts a thermocouple, because there is often some residual slag in the material, so the material will directly contact and collide with the temperature measuring device after flowing out of the discharge port, which can easily cause the temperature measuring device (thermocouple) to bend or break. A thermocouple needs to be replaced about every 10 days, and the frequency of bending or breaking is very high, which increases the replacement and maintenance costs; secondly, after the thermocouple is bent or broken, it is impossible to monitor the discharge temperature, resulting in the inability to confirm whether the repaired soil is qualified, which reduces efficiency; thirdly, after the thermocouple is bent or broken, because it is fixed on the thermal desorption device, the thermocouple cannot be directly replaced or repaired during the operation of the equipment, and it must be replaced. The equipment can only be replaced and repaired after it is shut down, resulting in untimely replacement; the equipment must be shut down to replace the thermocouple, resulting in the equipment being unable to operate continuously, increasing the cost of soil repair, reducing efficiency, and wasting manpower, material resources and energy; furthermore, the thermocouple itself is small in size and the discharge port opening is large. The material flowing out of the discharge port has a certain speed, and sometimes the material flows out intermittently, so the thermocouple can only contact a small amount of material flowing out of the discharge port, and sometimes it may not even contact the material. Even if the thermocouple contacts the material, the contact time is short and it is still intermittent, resulting in the monitored temperature being intermittent and inaccurate. Summary of the invention

[0005] The purpose of the present invention is to overcome the problems in the prior art that the temperature measuring equipment is easily bent or damaged; cannot be replaced without shutting down the machine after being damaged; cannot be replaced in time; temperature measurement is inaccurate and discontinuous; the equipment cannot be operated continuously, and the production rate is low; the maintenance cost and the cost of soil repair are increased. An automatic temperature measuring system for the discharge port of a thermal desorption device is provided. The automatic temperature measuring system can accurately measure the temperature while ensuring the continuous production and operation of the equipment. If it is damaged, it can be quickly replaced without shutting down for maintenance. The accuracy and continuity of temperature monitoring are greatly improved, the continuous operation of the equipment and the qualified rate of repair are ensured, the downtime of the equipment is reduced, the maintenance cost is saved, and the repair cost is further reduced.

[0006] In order to achieve the above-mentioned object, the present invention provides an automatic temperature measurement system for a discharge port of a thermal desorption device, comprising a material receiving device, a temperature measurement device, a temperature measurement device protection device and a driving device;

[0007] The material receiving device provided with a material receiving port and a material discharging port is located below the material discharging port of the thermal desorption device, and the material receiving port and the material discharging port are respectively located at the upper and lower positions of the material receiving device;

[0008] The temperature measuring device protection device located below the material receiving device has an internal cavity and an upper opening communicating with the cavity; the material receiving device is connected to the upper opening of the temperature measuring device protection device;

[0009] The temperature measuring device is placed in the cavity of the temperature measuring device protection device and is located below the material receiving device connected to the upper opening;

[0010] The driving device connected to the temperature measuring equipment protection device is used to drive the temperature measuring equipment protection device to rotate circumferentially to achieve material receiving and unloading.

[0011] Optionally, the size of the material receiving port is larger than that of the material discharging port, the material receiving port is higher than the upper surface of the temperature measuring equipment protective device, and the material discharging port is located in the internal cavity of the temperature measuring equipment protective device.

[0012] Optionally, a first depth h1 of the feed opening embedded in the temperature measuring device protective device is less than half of a second depth H of the cavity of the temperature measuring device protective device in the vertical direction.

[0013] Optionally, the automatic temperature measurement system for the discharge port of the thermal desorption equipment includes a supporting mechanism for supporting the temperature measurement equipment protection device and fixing the temperature measurement equipment protection device to rotate back and forth.

[0014] Optionally, the automatic temperature measurement system for the discharge port of the thermal desorption equipment includes a connecting piece for fixing the temperature measurement equipment, and the connecting piece is fixedly connected to the temperature measurement equipment protective device.

[0015] Optionally, the driving device includes an actuator for driving the temperature measuring equipment protective device to rotate.

[0016] Optionally, the driving device includes a controller for issuing instructions to the actuator to control the operation of the actuator.

[0017] Optionally, the automatic temperature measurement system at the outlet of the thermal desorption device includes a general control mechanism for processing and collecting data detected by the temperature measurement device.

[0018] Through the above technical scheme, the automatic temperature measurement system of the outlet of the thermal desorption equipment of the present invention can realize uninterrupted continuous temperature measurement under normal production operation conditions; when the thermocouple is damaged, it can be quickly repaired and replaced without stopping the machine; and the temperature measurement is more accurate by directly contacting the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an automatic temperature measurement system for a discharge port of a thermal desorption device according to an embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the installation position of the automatic temperature measurement system of the discharge port of the thermal desorption equipment according to one embodiment of the present invention.

[0021] Description of Reference Numerals

[0022] 1 Material receiving device 2 Temperature measuring equipment

[0023] 3 Temperature measuring equipment protection device 4 Material receiving port

[0024] 5 feeding port 6 support mechanism

[0025] 7 actuator 8 controller

[0026] 9 Rotary kiln of thermal desorption equipment 10 Discharge port

[0027] 11 Automatic temperature measurement system at the outlet of thermal desorption equipment

[0028] h1 first depth H second depth DETAILED DESCRIPTION

[0029] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0030] In the present invention, it should be noted that, in the absence of contrary instructions, "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. "Up" and "lower" usually refer to the upper and lower shown in the reference drawings; "inside" and "outside" usually refer to the inside and outside relative to the outline of each component itself; when the absolute position of the described object changes, the relative positional relationship may change. Relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Therefore, it cannot be understood as a limitation of the present invention.

[0031] The present invention provides an automatic temperature measurement system 11 for a thermal desorption device outlet, comprising a material receiving device 1, a temperature measurement device 2, a temperature measurement device protection device 3 and a driving device;

[0032] The receiving device 1 provided with a receiving port 4 and a discharging port 5 is located below the discharging port 10 of the thermal desorption device, and the receiving port 4 and the discharging port 5 are located at the upper and lower positions of the receiving device 1 respectively;

[0033] The temperature measuring device protection device 3 located below the material receiving device 1 has an internal cavity and an upper opening communicating with the cavity; the material receiving device 1 is connected to the upper opening of the temperature measuring device protection device 3;

[0034] The temperature measuring device 2 is placed in the cavity of the temperature measuring device protection device 3 and is located below the material receiving device 1 connected to the upper opening;

[0035] The driving device connected to the temperature measuring equipment protection device 3 is used to drive the temperature measuring equipment protection device 3 to rotate circumferentially to achieve material receiving and unloading.

[0036] The specific temperature measurement process is: the material flows out from the discharge port 10 of the rotary kiln 9 of the thermal desorption equipment, and after being collected by the receiving port 4 of the receiving device 1, the received material continues to flow through the temperature measuring device 2 from the discharge port 5 of the receiving device 1, and is guided into the cavity of the temperature measuring device protective device 3. During this process, the material contacts the temperature measuring device 2 and is measured by the temperature measuring device 2. After the temperature measurement is completed, the driving device drives the temperature measuring device protective device 3 to rotate, and rotates together with the receiving device 1 fixed on the temperature measuring device protective device 3, and the material that has been temperature measured flows from the temperature measuring device protective device 3 through the discharge port 5 of the receiving device 1 and is poured out from the receiving port 4 of the receiving device 1, completing one material receiving and pouring and also completing one temperature measurement.

[0037] The material receiving device 1 is used to receive a large amount of material flowing out of the discharge port 10 of the thermal desorption device. In the prior art, the temperature measuring device 2 is directly fixedly connected to the bottom of the discharge port 10 of the thermal desorption device, and directly contacts the material for temperature measurement. Since the temperature measuring device 2 is small in size, the material flowing through and contacting the temperature measuring device 2 is less than 1 / 3 of the material flowing out of the discharge port 10, and sometimes it is intermittent; after the material receiving device 1 is set, 1 / 2 of the material flowing out of the discharge port 10 of the thermal desorption device can be collected. The design of this structure of the material receiving device 1 can receive and collect the material flowing out of the discharge port 10 of the thermal desorption device. A large amount of material flowing out of the discharge port 10 of the desorption equipment is introduced into the protective device 3 of the temperature measuring equipment, which increases the material in contact with the temperature measuring equipment 2, thereby increasing the material that can be measured, and does not cause the temperature measuring equipment 2 to be unable to contact the material and cause intermittent temperature measurement; on the other hand, the material can also reduce the flow rate of the material flowing out of the discharge port 10 of the thermal desorption equipment to a certain extent during the collection, contact and collision process of the material receiving device 1, thereby increasing the contact time between the material and the temperature measuring equipment 2, and the material is gathered together after being collected, which also reduces the heat loss of the material, making the temperature measurement more accurate.

[0038] In one embodiment, the temperature measuring device 2 is a thermocouple.

[0039] The temperature measuring device 2 is placed in the temperature measuring device protection device 3 and is located below the embedded material receiving device 1, which can protect the temperature measuring device 2, increase the impact and pressure resistance of the temperature measuring device 2, and ensure that the temperature measuring device 2 will not be bent or broken during use, saving replacement and maintenance costs; because the temperature measuring device 2 is placed in the temperature measuring device protection device 3, it is not directly connected and fixed to the discharge port 10 of the thermal desorption device, even if the temperature measuring device 2 fails, it can be easily replaced without shutting down the thermal desorption device, thereby ensuring the continuous operation of the equipment and saving soil remediation costs.

[0040] Preferably, the material receiving device 1 is a material receiving hopper, and may also be other material receiving devices 1 with upper and lower openings.

[0041] Preferably, the temperature measuring equipment protection device 3 is a stainless steel tube, the middle section of the upper surface of the stainless steel tube has an opening, and the stainless steel tube is a 304L thickened tube.

[0042] The temperature measuring equipment protection device 3 may also be other structures having an internal cavity and an upper opening communicating with the cavity.

[0043] Preferably, the size of the material receiving port 4 is larger than that of the material discharge port 5. This structure of larger top and smaller bottom is for better collecting materials and buffering the flow rate of materials collected from the thermal desorption equipment discharge port 10; the structure that the material receiving port 4 is higher than the upper surface of the temperature measuring equipment protective device 3 is conducive to better material receiving; the material discharge port 5 is located in the internal cavity of the temperature measuring equipment protective device 3, which is conducive to introducing the collected materials into the temperature measuring equipment protective device 3 and making the materials contact with the temperature measuring equipment 2 placed in the temperature measuring equipment protective device 3.

[0044] Preferably, the first depth h1 of the discharge port 5 embedded in the temperature measuring device protection device 3 is less than half of the second depth H of the cavity of the temperature measuring device protection device 3 in the vertical direction. After the material received by the receiving device 1 flows out from the discharge port 5, it will stay in the remaining space in the temperature measuring device protection device 3 that is not occupied by the receiving device 1. This design is to provide sufficient staying space for the material collected by the receiving device 1.

[0045] Specifically, the thermal desorption equipment outlet automatic temperature measurement system 11 includes a support mechanism 6 for supporting the temperature measurement equipment protection device 3 and fixing its back-and-forth rotation, and the support mechanism 6 includes a bearing and a sleeve, and the bearing and the sleeve are used to fix the back-and-forth rotation of the stainless steel pipe.

[0046] Specifically, the automatic temperature measurement system 11 for the discharge port of the thermal desorption device includes a connecting piece (not shown in the figure) for fixing the temperature measurement device 2 , and the connecting piece is fixedly connected to the temperature measurement device protection device 3 .

[0047] Preferably, the connector may be a flange, which is welded to the temperature measuring device protection device 3, and then the temperature measuring device 2 is connected to the flange, so as to facilitate replacement and maintenance of the temperature measuring device 2. For example, a thermocouple is inserted into the stainless steel pipe from one end of the stainless steel pipe through the flange.

[0048] Specifically, the driving device includes an actuator 7 for driving the temperature measuring equipment protection device 3 to rotate.

[0049] Preferably, the temperature measuring device protection device 3 is a stainless steel tube, one end of which is provided with a temperature measuring device 2 (such as a thermocouple), and the other end is connected to an actuator 7, and the actuator 7 is connected to the stainless steel tube through a connecting rod. The actuator 7 is used to drive the stainless steel tube to rotate, and the operation of the actuator 7 causes the stainless steel tube to rotate 180° continuously, continuously receiving and unloading materials, and updating the detected temperature data.

[0050] Specifically, the driving device includes a controller 8 for issuing instructions to the actuator 7 to control the operation of the actuator 7. The actuator 7 is connected to the controller 8, and the controller 8 is used to issue instructions to the actuator 7 to control the rotation of the actuator 7. The control box is provided with components such as a solenoid valve, a time relay, and a programming module. The controller 8 issues instructions to make the actuator 7 rotate regularly (for example, the time relay sets the time to 10 seconds and 5 seconds, and the programming module issues instructions: the actuator 7 flips once every 10 seconds and flips back after 5 seconds). The actuator 7 is directly connected to the stainless steel pipe, so that the stainless steel pipe rotates continuously to receive and pour materials.

[0051] Specifically, the automatic temperature measurement system 11 at the outlet of the thermal desorption equipment includes a general control mechanism (not shown in the figure) for processing and collecting the data detected by the temperature measuring device 2. The temperature measuring device 2 transmits the measured temperature to the general control mechanism of the thermal desorption equipment in real time, which can monitor whether the soil remediation is qualified, thereby facilitating the monitoring of the entire operation process.

[0052] The automatic temperature measurement system 11 for the discharge port of the thermal desorption equipment of the present invention can timely measure the temperature of the material at the discharge port through a thermocouple and transmit it to the main control mechanism while the thermal desorption equipment is running continuously, and can monitor continuously and uninterruptedly; by providing a receiving hopper, it is ensured that the material at the discharge port is in full contact with the thermocouple, and the temperature measurement accuracy is high; when the thermal desorption equipment is not shut down, the thermocouple can be quickly repaired and replaced if it is damaged, thereby ensuring the continuous operation capability of the thermal desorption equipment.

[0053] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. An automatic temperature measurement system for the outlet of a thermal desorption device, characterized in that: It comprises a material receiving device (1), a temperature measuring device (2), a temperature measuring device protection device (3) and a driving device; The material receiving device (1) is provided with a material receiving port (4) and a material discharging port (5) and is located below a material discharging port (10) of the thermal desorption device, and the material receiving port (4) and the material discharging port (5) are located at upper and lower positions of the material receiving device (1) respectively; The temperature measuring device protection device (3) located below the material receiving device (1) has an internal cavity and an upper opening communicating with the cavity; the material receiving device (1) is connected to the upper opening of the temperature measuring device protection device (3); The temperature measuring device (2) is placed in the cavity of the temperature measuring device protection device (3) and is located below the material receiving device (1) connected to the upper opening; The driving device connected to the temperature measuring device protection device (3) is used to drive the temperature measuring device protection device (3) to rotate circumferentially to achieve material receiving and material unloading.

2. The automatic temperature measurement system for the outlet of the thermal desorption equipment according to claim 1, characterized in that: The size of the material receiving port (4) is larger than the size of the material discharging port (5), the material receiving port (4) is higher than the upper surface of the temperature measuring equipment protection device (3), and the material discharging port (5) is located in the internal cavity of the temperature measuring equipment protection device (3).

3. The automatic temperature measurement system for the outlet of the thermal desorption equipment according to claim 2, characterized in that: The first depth h1 of the feed opening (5) embedded in the temperature measuring device protection device (3) is less than half of the second depth H of the cavity of the temperature measuring device protection device (3) in the vertical direction.

4. The automatic temperature measurement system for the outlet of the thermal desorption equipment according to claim 1, characterized in that: The automatic temperature measurement system for the outlet of the thermal desorption equipment comprises a support mechanism (6) for supporting the temperature measurement equipment protection device (3) and fixing the temperature measurement equipment protection device to rotate back and forth.

5. The automatic temperature measurement system for the outlet of the thermal desorption equipment according to claim 1, characterized in that: The automatic temperature measurement system for the outlet of the thermal desorption device comprises a connecting piece for fixing the temperature measurement device (2), and the connecting piece is fixedly connected to the temperature measurement device protection device (3).

6. The automatic temperature measurement system for the outlet of the thermal desorption equipment according to claim 1, characterized in that: The driving device comprises an actuator (7) for driving the temperature measuring equipment protection device (3) to rotate.

7. The automatic temperature measurement system for the outlet of the thermal desorption equipment according to claim 6, characterized in that: The driving device comprises a controller (8) for issuing instructions to the actuator (7) to control the operation of the actuator (7).

8. The automatic temperature measurement system for the outlet of the thermal desorption equipment according to claim 1, characterized in that: The automatic temperature measurement system at the outlet of the thermal desorption device comprises a general control mechanism for processing and collecting data detected by the temperature measurement device (2).

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