Automatic heating desorption device for carbon tank of recycling machine

Abstract

The utility model discloses an automatic heating and desorption device for a carbon tank of a recycling machine, and relates to the technical field of automatic heating and desorption of carbon tanks of machines. The tank body is internally provided with an interlayer; a waste gas inlet is integrally formed in one end of the tank body; a steam pipeline is cooperatively mounted at the top of the tank body; an electric proportion regulating valve is mounted on the connecting pipe in a matched manner; the electric proportioning valve is additionally arranged on the steam pipeline on the boiler and the tank body, the valve size of the electric proportioning valve is controlled, the steam flow is changed, the pressure in the tank body is kept in a set pressure range, and the electric proportioning valve can be opened in a delayed mode and closed in advance through the controller during heating and temperature closing. Therefore, when the control butterfly valve is opened and closed, damage caused by pressure difference is reduced, the desorption time of activated carbon in the tank body can be shortened, the steam consumption is reduced, the energy loss is reduced, due to the fact that the opening and closing frequency and the pressure difference of the control butterfly valve are reduced, the use of the control butterfly valve is reduced, and the service life of the butterfly valve is prolonged.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of automatic heating and desorption of a carbon canister of a recycling machine, in particular to an automatic heating and desorption device of a carbon canister of a recycling machine. Background Art

[0002] Automatic heating and desorption of carbon canister refers to heating the activated carbon canister that adsorbs organic waste gas through an automatic control heating device, so that the adsorbed organic matter is desorbed and released, thereby realizing the regeneration and reuse of activated carbon; in some industrial production processes, waste gas containing organic matter is generated. In order to reduce the emission of organic matter, the waste gas is usually treated by activated carbon adsorption. Activated carbon has a loose and porous structure and can adsorb organic matter in the waste gas, thereby achieving the purpose of purifying the waste gas. However, as time goes by, the activated carbon will gradually become saturated and the adsorption capacity will decrease. In order to restore the adsorption capacity of activated carbon, it needs to be regenerated. Automatic heating and desorption of carbon canister is a commonly used activated carbon regeneration method; in the process of automatic heating and desorption of carbon canister, electric heaters, hot oil furnaces or steam are usually used as heating sources to heat the activated carbon canister. The heating temperature is generally between 100°C and 200°C, and the specific temperature depends on the type of activated carbon and the nature of the adsorbed organic matter; when the activated carbon canister is heated to a certain temperature, the organic matter adsorbed on the activated carbon will undergo a desorption reaction and release organic gas. These organic gases can be recovered after cooling through a condenser, or they can be processed through combustion and other methods; the automatic heating and desorption of the carbon canister has the advantages of simple operation, good regeneration effect, and the ability to achieve automatic control; however, in actual applications, it is necessary to pay attention to controlling the heating temperature and heating time to avoid excessive aging or combustion of the activated carbon. At the same time, the desorbed organic matter also needs to be properly handled to prevent secondary pollution; some steam desorption devices now directly heat and desorb the activated carbon, so that water vapor or other impurities may be mixed in the steam, so when the activated carbon is directly desorbed, other harmful substances may be produced;

[0003] The current heating method of the carbon canister is that the boiler provides steam and a pneumatic butterfly valve is opened and closed to control the amount of steam to heat to the set temperature. Because the steam pressure is above 7KG / cm2, and due to recycling safety factors, the upper limit of the carbon canister pressure is 1.8KG / CM2. This makes the pressure in the carbon canister quickly reach the upper limit during heating, which will cause the pneumatic butterfly valve to close and then reopen the butterfly valve for heating after the pressure drops. This cycle repeats. Due to the large pressure difference, the butterfly valve moves frequently and the valve is easily damaged because it needs to release pressure continuously and then heat. The heating and desorption time is prolonged, and the steam consumption is large;

[0004] In view of the above situation, we provide a recycling machine carbon canister automatic heating and desorption device. In this device, an electric proportional control valve is installed on the steam pipeline of the boiler and the tank body control butterfly valve. The valve size of the electric proportional control valve is automatically controlled by the PLC program through the pressure sensor installed on the tank body to change the steam flow size, so that the pressure in the tank body is kept below 1.8KG / CM2. At the same time, when heating and shutting off the temperature, the proportional valve can be opened with a delay and closed in advance. This reduces the damage caused by the pressure difference when the butterfly valve is opened and closed. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic heating and desorption device for a carbon canister of a recovery machine, and to install an electric proportional control valve on the steam pipeline of the boiler and the tank body control butterfly valve. The valve size of the electric proportional control valve is automatically controlled by a pressure sensor installed on the tank body through a PLC program to change the steam flow rate, so as to solve the problems of the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A recycling machine carbon canister automatic heating and desorption device, the interior of the canister is sandwiched; one end of the canister is integrally provided with an exhaust gas inlet, and the bottom of the canister is also provided with a toluene recovery port; a steam pipe is also installed on the top of the canister; the steam pipe is connected to the boiler through a connecting pipe; an electric proportional regulating valve is installed on the connecting pipe; a control butterfly valve is installed on the steam pipe; in this way, when the activated carbon inside the canister is desorbed through the steam pipe, the interlayer of the canister is heated as a whole, so that the temperature inside the canister rises in a short time, and impurities mixed in the steam are effectively prevented from entering the inside of the canister;

[0008] As a further technical solution of the utility model, a fire-fighting pipe and an adsorption discharge port are respectively provided on both sides of the steam pipe; a control butterfly valve is provided on both the fire-fighting pipe and the adsorption discharge port; the opening and closing state of the adsorption discharge port is effectively controlled by controlling the butterfly valve;

[0009] As a further technical solution of the utility model, the tank body is equipped with an activated carbon delivery pipeline and a pressure relief butterfly valve, a pressure sensor and a safety valve on the side of the fire protection pipeline away from the steam pipeline; the pressure relief butterfly valve, the pressure sensor and the safety valve effectively ensure that the pressure inside the tank body will not be too high;

[0010] As a further technical solution of the utility model, a desorption discharge port is installed on the tank body at the side of the adsorption discharge port away from the steam pipeline; a control butterfly valve is installed on the desorption discharge port; the gas after desorption is effectively discharged by opening the desorption discharge port through the control butterfly valve;

[0011] As a further technical solution of the utility model, a control butterfly valve is installed on the connecting pipe between the electric proportional control valve and the boiler.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. When the utility model is in use, the waste gas is transported to the inside of the tank through the waste gas inlet, and the activated carbon inside the tank adsorbs the waste gas. The adsorption exhaust port is opened by controlling the butterfly valve after the adsorption is completed. When the waste gas discharged from the adsorption exhaust port exceeds the set VOC content, the butterfly valve is controlled to close the adsorption exhaust port, and steam is transported to the inside of the steam pipeline through the electrical proportional control valve;

[0014] 2. In the utility model, steam enters the interlayer of the tank body to achieve heating treatment of the entire interior of the tank body and achieve the desorption effect of activated carbon. When the steam is transported, the pressure sensor is used to effectively control the size of the switch of the electrical proportional regulating valve and adjust the steam flow rate, which can shorten the desorption time of the activated carbon inside the tank body;

[0015] 3. The utility model installs an electric proportional regulating valve on the steam pipes on the boiler and the tank body, and automatically controls the valve size of the electric proportional regulating valve through the pressure sensor installed on the tank body through the PLC program, so as to change the steam flow rate and keep the pressure in the tank body within the set pressure range. At the same time, during heating and temperature reduction, the electric proportional regulating valve can be opened with delay and closed in advance through the controller, so as to reduce the damage caused by the pressure difference when the control butterfly valve is opened and closed, shorten the desorption time of the activated carbon in the tank body, reduce the steam consumption, and reduce the energy loss. Due to the reduction of the opening and closing frequency and the pressure difference of the control butterfly valve, the use of the control butterfly valve is reduced and the service life of the butterfly valve is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 This utility model Figure 1 main view.

[0018] Figure 3 This utility model Figure 1 Another perspective structural diagram of .

[0019] Figure 4 This utility model Figure 2 Schematic diagram of the internal structure.

[0020] In the figure: 1-tank body, 2-waste gas inlet, 3-fire fighting pipe, 4-steam pipe, 5-connecting pipe, 6-adsorption discharge port, 7-desorption discharge port, 8-toluene recovery port, 9-electric proportional control valve, 10-activated carbon delivery pipeline, 11-pressure relief butterfly valve, 12-pressure sensor, 13-safety valve, 14-control butterfly valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 In the embodiment of the utility model, a recycling machine carbon canister automatic heating and desorption device comprises a canister 1; the interior of the canister 1 is arranged in a sandwich; one end of the canister 1 is integrally provided with an exhaust gas inlet 2, and the bottom of the canister 1 is also provided with a toluene recovery port 8; the top of the canister 1 is also equipped with a steam pipe 4; the steam pipe 4 is connected to the boiler through a connecting pipe 5; the connecting pipe 5 is equipped with an electrical proportional regulating valve 9; the steam pipe 4 is equipped with a control butterfly valve 14;

[0023] The two sides of the steam pipe 4 are respectively provided with a fire-fighting pipe 3 and an adsorption discharge port 6; the fire-fighting pipe 3 and the adsorption discharge port 6 are both provided with a control butterfly valve 14;

[0024] By adopting the above technical solution, when in use, the exhaust gas is transported to the inside of the tank body 1 through the exhaust gas inlet 2, so that the activated carbon inside the tank body 1 can adsorb the exhaust gas, and the adsorption exhaust port 6 is opened by the control butterfly valve 14 after the adsorption is completed. When the exhaust gas discharged from the adsorption exhaust port 6 exceeds the set VOC content, the control butterfly valve 14 closes the adsorption exhaust port 6, and steam is transported to the inside of the steam pipe 4 through the electrical proportional control valve 9;

[0025] The tank body 1 is equipped with an activated carbon delivery pipeline 10, a pressure relief butterfly valve 11, a pressure sensor 12 and a safety valve 13 on the side of the fire protection pipeline 3 away from the steam pipeline 4;

[0026] In this embodiment, a desorption discharge port 7 is installed on the tank body 1 at the side of the adsorption discharge port 6 away from the steam pipe 4; a control butterfly valve 14 is installed on the desorption discharge port 7;

[0027] By adopting the above technical solution, steam enters the interlayer of the tank body 1, realizes heating treatment of the entire interior of the tank body 1, and realizes the desorption effect of the activated carbon. When the steam is transported, the pressure sensor 12 effectively controls the size of the switch of the electrical proportional control valve 9 and realizes the adjustment of the steam flow rate, which can shorten the desorption time of the activated carbon inside the tank body 1;

[0028] Furthermore, a control butterfly valve 14 is installed on the connecting pipe 5 between the electrical proportional control valve 9 and the boiler;

[0029] By adopting the above technical solution, an electric proportional regulating valve 9 is added to the steam pipe 4 on the boiler and the tank body 1, and the valve size of the electric proportional regulating valve 9 is automatically controlled by the pressure sensor 12 installed on the tank body 1 through the PLC program to change the steam flow rate, so that the pressure in the tank body 1 is maintained within the set pressure range. At the same time, when heating and shutting off the temperature, the electric proportional regulating valve 9 can be opened and closed in advance by the controller, so that the control butterfly valve 14 can reduce the damage caused by the pressure difference when opening and closing, shorten the desorption time of the activated carbon in the tank body 1, reduce the steam consumption, and reduce energy loss. Due to the reduction of the opening and closing frequency and the pressure difference of the control butterfly valve 14, the use of the control butterfly valve 14 is reduced, and the service life of the butterfly valve is increased.

[0030] The working principle of the utility model is as follows: when in use, the waste gas is transported to the inside of the tank body 1 through the waste gas inlet 2, and the activated carbon inside the tank body 1 adsorbs the waste gas. The adsorbed gas is opened through the control butterfly valve 14 to open the adsorption discharge port 6. When the waste gas discharged from the adsorption discharge port 6 exceeds the set VOC content, the control butterfly valve 14 closes the adsorption discharge port 6, and steam is transported to the inside of the steam pipe 4 through the electrical proportional control valve 9;

[0031] The steam enters the interlayer of the tank body 1 to heat the entire interior of the tank body 1 and achieve the desorption effect of the activated carbon. When the steam is transported, the pressure sensor 12 effectively controls the size of the switch of the electrical proportional regulating valve 9 and adjusts the steam flow rate, which can shorten the desorption time of the activated carbon inside the tank body 1.

[0032] By installing an electric proportional regulating valve 9 on the steam pipe 4 between the boiler and the tank body 1, the valve size of the electric proportional regulating valve 9 is automatically controlled by the pressure sensor 12 installed on the tank body 1 through the PLC program, and the steam flow rate is changed, so that the pressure in the tank body 1 is maintained within the set pressure range. At the same time, when heating and shutting off the temperature, the electric proportional regulating valve 9 can be opened and closed in advance by the controller, so that the damage caused by the pressure difference when the control butterfly valve 14 is opened and closed can be reduced, the desorption time of the activated carbon in the tank body 1 can be shortened, the steam consumption can be reduced, and the energy loss can be reduced. Due to the reduction of the opening and closing frequency and the pressure difference of the control butterfly valve 14, the use of the control butterfly valve 14 is reduced, and the service life of the butterfly valve is increased.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An automatic heating and desorption device for a recycling machine carbon canister, characterized in that: The invention comprises a tank body (1); the interior of the tank body (1) is in the form of a sandwich; one end of the tank body (1) is integrally provided with an exhaust gas inlet (2); the bottom of the tank body (1) is also provided with a toluene recovery port (8); the top of the tank body (1) is also provided with a steam pipe (4); the steam pipe (4) is connected to the boiler via a connecting pipe (5); an electric proportional regulating valve (9) is installed on the connecting pipe (5); and a control butterfly valve (14) is installed on the steam pipe (4).

2. The automatic heating and desorption device for a recycling machine carbon canister according to claim 1, characterized in that: A fire-fighting pipe (3) and an adsorption discharge port (6) are respectively provided on both sides of the steam pipe (4); and a control butterfly valve (14) is provided on both the fire-fighting pipe (3) and the adsorption discharge port (6).

3. The automatic heating and desorption device for a recycling machine carbon canister according to claim 1, characterized in that: The tank body (1) is equipped with an activated carbon delivery pipeline (10), a pressure relief butterfly valve (11), a pressure sensor (12) and a safety valve (13) on the side of the fire protection pipeline (3) away from the steam pipeline (4).

4. The automatic heating and desorption device for a recycling machine carbon canister according to claim 2, characterized in that: A desorption discharge port (7) is installed on the tank body (1) at the side of the adsorption discharge port (6) away from the steam pipeline (4); a control butterfly valve (14) is installed in conjunction with the desorption discharge port (7).

5. The automatic heating and desorption device for a recycling machine carbon canister according to claim 4 is characterized in that: A control butterfly valve (14) is installed on the connecting pipe (5) between the electrical proportional control valve (9) and the boiler.

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