Automatic detection desalting flue gas heat exchanger

Abstract

The utility model discloses an automatic detection desalting flue gas heat exchanger and relates to the technical field of medical waste treatment. The automatic detection desalting flue gas heat exchanger comprises a flue gas heat exchanger body, a plurality of thin pipes arranged in a square array are arranged in the flue gas heat exchanger body, and the thin pipes are vertically arranged and used for discharging flue gas; a heat exchange cavity is formed in the portion, except for the thin pipes, of the flue gas heat exchanger, the heat exchange cavity is used for flowing of high-temperature flue gas and heating of low-temperature flue gas in the thin pipes, and the thin pipes are connected with a gas outlet formed in one side of the flue gas heat exchange body. The flue gas treatment device further comprises a high-temperature flue gas inlet, a high-temperature flue gas outlet and a spraying device, wherein the spraying device is used for spraying flue gas at the rear end. The flue gas treatment system has the advantages that the sensor is arranged at the flue gas outlet, the accumulation condition of salt at the flue gas outlet is monitored in real time, stable operation of the flue gas heat exchanger is ensured, the problems of salt condensation and outlet blockage of the flue gas heat exchanger in a medical waste pyrolysis process are effectively solved, and the operation efficiency and safety of the flue gas treatment system are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical waste treatment, in particular to an automatic detection and desalination flue gas heat exchanger. Background Art

[0002] During the pyrolysis treatment of medical waste, the temperature of the tail flue gas after cold spraying usually fluctuates around 70°C. The flue gas at this temperature is prone to produce white smoke.

[0003] At present, in order to eliminate white smoke, a flue gas heat exchanger is often used to use the high-temperature flue gas at the dust collector outlet to perform secondary heating on the tail flue gas to increase the flue gas temperature at the chimney outlet. However, since the medical waste pyrolysis process often has an SCR / SNCR link, salt is prone to condensation in the rear-end flue gas exchanger. Long-term accumulation may block the flue gas outlet and affect the normal operation of the system. Based on the above reasons, the utility model designs an automatic detection and desalination flue gas heat exchanger. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an automatic detection and desalination flue gas heat exchanger.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An automatic detection desalination flue gas heat exchanger, comprising:

[0007] A flue gas heat exchanger body, wherein the flue gas heat exchanger body is provided with a plurality of capillaries arranged in a square array, wherein the plurality of capillaries are arranged vertically and are used to discharge flue gas, and wherein the portion of the flue gas heat exchanger excluding the plurality of capillaries is provided with a heat exchange chamber, wherein the heat exchange chamber is used for the flow of high-temperature flue gas and for heating the low-temperature flue gas within the capillaries, and wherein the plurality of capillaries are connected to an air outlet provided on one side of the flue gas heat exchanger body;

[0008] A high-temperature flue gas inlet is used to return the front-end high-temperature flue gas to the heat exchange chamber to heat the rear-end low-temperature flue gas;

[0009] A high-temperature flue gas outlet, wherein the high-temperature flue gas outlet is used to discharge the high-temperature flue gas used for heat exchange;

[0010] A spraying device, which is used to spray the rear-end flue gas;

[0011] A base is used to support the flue gas heat exchange body.

[0012] Preferably, the top of the heat exchange chamber is located at the top end of a plurality of thin tubes and is set as an air inlet end, and the spray device acts on the air outlet.

[0013] Preferably, the air intake end is provided with a sensor, and the sensor is a smoke monitoring probe.

[0014] The high-temperature flue gas inlet is opened at the bottom of one side of the heat exchange chamber, and the high-temperature flue gas outlet is opened at the top of the other side of the heat exchange chamber.

[0015] The heat exchange cavity is configured to be approximately in an "S"-shaped structure, and boxes that meet the heat exchange cavity structure are provided on both sides of the flue gas heat exchanger body.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. By installing a sensor at the flue gas outlet, the accumulation of salt at the flue gas outlet is monitored in real time to ensure the stable operation of the flue gas heat exchanger.

[0018] 2. When the salt accumulation reaches the preset limit, the spray device is automatically started for cleaning, avoiding manual intervention and improving the automation level of the system.

[0019] 3. It effectively solved the problem of salt condensation and outlet blockage in the flue gas heat exchanger during the medical waste pyrolysis process, and improved the operating efficiency and safety of the flue gas treatment system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a flue gas heat exchanger in an automatic detection desalination flue gas heat exchanger proposed by the utility model.

[0021] Figure 2 This is a top view of the air inlet end of an automatic detection desalination flue gas heat exchanger proposed by the utility model.

[0022] Figure 3 This is a front view of a spray device and a sensor in an automatic detection desalination flue gas heat exchanger proposed by the utility model.

[0023] In the figure: 1 flue gas heat exchanger body, 11 thin tube, 12 heat exchange chamber, 13 air outlet, 14 air inlet, 2 spray device, 3 high-temperature flue gas inlet, 4 high-temperature flue gas outlet, 5 box, 6 base, 7 sensor. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] like Figure 1-3 As shown, an automatic detection and desalination flue gas heat exchanger includes a flue gas heat exchanger body 1, and a base 6 is provided at the bottom of the flue gas heat exchanger body 1 for support.

[0026] The flue gas heat exchanger body 1 is provided with a plurality of narrow tubes 11 arranged in a square array. The plurality of narrow tubes 11 are arranged vertically and are used to discharge flue gas. The portion of the flue gas heat exchanger 1 excluding the plurality of narrow tubes 11 is provided with a heat exchange chamber 12. The heat exchange chamber 12 is used for the flow of high-temperature flue gas and heating the low-temperature flue gas in the narrow tubes 11. The plurality of narrow tubes 11 are connected to an outlet 13 provided on one side of the flue gas heat exchanger body 1.

[0027] A high-temperature flue gas inlet 3 and a high-temperature flue gas outlet 4 are respectively provided on both sides of the flue gas heat exchanger body. The high-temperature flue gas inlet 3 is used to return the high-temperature flue gas at the front end to the heat exchange chamber 12 to heat the low-temperature flue gas at the rear end. The high-temperature flue gas inlet is opened at the bottom of one side of the heat exchange chamber. The high-temperature flue gas outlet 4 is used to discharge the high-temperature flue gas used for heat exchange. The high-temperature flue gas outlet 4 is opened at the top of the other side of the heat exchange chamber, and the heat exchange chamber 12 is set to an approximately "S"-shaped structure. Boxes 5 that meet the structure of the heat exchange chamber 12 are provided on both sides of the flue gas heat exchanger body 1. The gas flow in the heat exchange chamber 12 is met through the positions of the high-temperature flue gas inlet 3 and the high-temperature flue gas outlet 4 and the two boxes 5.

[0028] Spray device 2 acts on the bottom air outlet 13 of heat exchange chamber 12. A sensor 7 is located below spray device 2 at air outlet 13. Sensor 7 utilizes a smoke monitoring probe, using an electrochemical sensor to detect the chemical signature of smoke particles. When smoke passes through the sensor, it reacts with the sensor's electrodes, generating a current signal. By measuring the current, the monitoring instrument can calculate the smoke concentration. When the smoke concentration is abnormal, spray device 2 is activated to spray and flush the smoke outlet.

[0029] The flue gas heat exchanger body 1 is provided with a high-temperature flue gas inlet 3 and a high-temperature flue gas outlet 4, which are used to heat the tail flue gas with high-temperature flue gas. The sensor 7 is arranged at the flue gas outlet 13 to detect the accumulation of salt. The spray device 2 is connected to the sensor 7. When the sensor 7 detects that the salt accumulation reaches the preset limit, the spray device 2 is automatically started to flush the flue gas outlet 13 to remove the salt accumulation, which effectively solves the problem of salt condensation and blockage of the flue gas outlet 13 in the medical waste pyrolysis process, and improves the operating efficiency and safety of the flue gas treatment system.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic detection desalination flue gas heat exchanger, characterized in that: include: A flue gas heat exchanger body (1), wherein a plurality of thin tubes (11) arranged in a square array are provided in the flue gas heat exchanger body (1), wherein the plurality of thin tubes (11) are arranged vertically and are used to discharge flue gas, wherein a heat exchange cavity (12) is provided in the flue gas heat exchanger (1) except for the plurality of thin tubes (11), wherein the heat exchange cavity (12) is used for the flow of high-temperature flue gas and heating the low-temperature flue gas in the thin tubes (11), and wherein the plurality of thin tubes (11) are connected to an air outlet (13) provided on one side of the flue gas heat exchanger body (1); A high-temperature flue gas inlet (3), wherein the high-temperature flue gas inlet (3) is used to return the front high-temperature flue gas to the heat exchange chamber (12) to heat the rear low-temperature flue gas; a high-temperature flue gas outlet (4), the high-temperature flue gas outlet (4) being used to discharge the high-temperature flue gas used for heat exchange; A spraying device (2), the spraying device (2) is used to spray the rear end flue gas; A base (6), the base (6) is used to support the flue gas heat exchange body (1).

2. The automatic detection desalination flue gas heat exchanger according to claim 1, characterized in that: The top of the heat exchange chamber (12) is located at the top end of a plurality of thin tubes (11) and is set as an air inlet end (14), and the spray device (2) acts on the air outlet (13).

3. The automatic detection desalination flue gas heat exchanger according to claim 1, characterized in that: The air outlet (13) is provided with a sensor (7), and the sensor (7) is a smoke monitoring probe.

4. The automatic detection desalination flue gas heat exchanger according to claim 3, characterized in that: The high-temperature flue gas inlet is opened at the bottom of one side of the heat exchange chamber (12), and the high-temperature flue gas outlet (4) is opened at the top of the other side of the heat exchange chamber.

5. The automatic detection desalination flue gas heat exchanger according to claim 3, characterized in that: The heat exchange chamber (12) is configured to have an approximately "S"-shaped structure, and boxes (5) that meet the structure of the heat exchange chamber (12) are provided on both sides of the flue gas heat exchanger body (1).

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