Tail gas treatment equipment for gold ore dressing agent production and use method

Abstract

The application discloses a tail gas treatment equipment for gold ore dressing agent production, which comprises a controller and sequentially connected tail gas pretreatment device, regenerative incinerator, impurity removal device and chimney; the regenerative incinerator is provided with a heat cycle interlayer on the furnace body, and the furnace body is further connected with a dust removal cloth bag; the tail gas pretreatment device is communicated with the heat cycle interlayer; the impurity removal device removes the sulfur-containing gas after incineration; and the controller is connected with the tail gas pretreatment device and the regenerative incinerator respectively. The application improves the traditional regenerative incinerator, the tail gas pretreatment device can preliminarily heat the furnace body, solves the problem that the traditional furnace body is easily damaged due to too fast heating, the dust removal cloth bag removes dust from the tail gas, solves the problem that too much dust in the furnace body is difficult to clean, the sulfur-containing gas is removed by the impurity removal device before the tail gas is discharged, environmental pollution is reduced, the sulfur-containing gas recovered by the impurity removal device can be reused, economic efficiency is improved, and the whole is controlled by the controller, so that the operation is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of tail gas treatment, and in particular to tail gas treatment equipment and a use method for the production of gold beneficiation agents. Background Art

[0002] Gold beneficiation agents are leaching agents that separate and enrich gold from metallic or non-metallic impurities in gold ore, facilitating gold recovery. Because sodium cyanide, a common gold beneficiation agent, is highly toxic, low-toxic and environmentally friendly gold extraction agents, made from raw materials such as thiourea and thiosulfate, are currently being promoted. To produce the gold extraction agent using thiourea, thiourea, baking soda, mineral salts, and additives are mixed and reacted at high temperatures to produce a semi-finished product. This semi-finished product is then cooled, crushed, and screened to obtain the final product. The production process also generates a large amount of exhaust gas, primarily containing toxic and hazardous substances such as hydrogen sulfide, ammonia, carbon dioxide, and dust particles. Direct release into the air can significantly damage the surrounding environment. Therefore, exhaust gas treatment is required before discharge. Existing technology typically involves passing the exhaust gas through an incinerator, where the heat generated by the combustion of auxiliary fuel oxidizes and decomposes the harmful gases, rendering the exhaust gas harmless.

[0003] As an important equipment for exhaust gas treatment, waste gas incinerators are divided into two types: "direct-fired" and "thermal storage". "Direct-fired" means that only the exhaust gas is burned without recovering the heat, while "thermal storage" recovers the heat in the exhaust gas, which is energy-saving and environmentally friendly. In fact, the principles of "direct-fired" and "thermal storage" are the same, and the only difference is whether there is heat storage material in the furnace. The existing thermal storage incinerator has a single function. The exhaust gas is directly heated when it is passed into the furnace, which will cause the heating chamber in the furnace to heat up rapidly. The furnace temperature changes too quickly and is easily damaged, requiring frequent maintenance. Although it is effective when heating dust-free exhaust gas, a large amount of dust will accumulate on the inner wall of the furnace when the dust-laden exhaust gas is treated for a long time, which is difficult to clean. In addition, the existing technology discharges the exhaust gas into the air after treatment by the thermal storage incinerator. The sulfur-containing gas mixed in the exhaust gas cannot be eliminated, and the exhaust gas discharge will still pollute the environment. Summary of the Invention

[0004] In view of the shortcomings of the above-mentioned traditional regenerative incinerator, such as the temperature in the furnace changes too quickly and is easy to be damaged, dust easily accumulates inside after long-term use, it is inconvenient to clean, and sulfur-containing gases cannot be removed, the present invention provides a tail gas treatment device and a method of use for the production of gold mineral processing agents, which can increase the service life of the regenerative incinerator, and is not easy to accumulate dust in the furnace, which is convenient to clean. At the same time, the sulfur-containing gas in the tail gas can be removed cleanly, which is energy-saving and environmentally friendly.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] A tail gas treatment device for gold beneficiation agent production, comprising a controller and a tail gas pretreatment device, a regenerative incinerator, an impurity removal device and a chimney connected in sequence; the tail gas pretreatment device transfers part of the heat of the tail gas to the regenerative incinerator to preliminarily heat it; a heat circulation interlayer is provided on the furnace body of the regenerative incinerator, the furnace body is also connected to a dust removal bag, and the tail gas pretreatment device is connected to the heat circulation interlayer; the impurity removal device filters the tail gas after incineration again to remove the sulfur-containing gas after incineration; the controller is respectively connected to the tail gas pretreatment device and the regenerative incinerator; the tail gas pretreatment device includes a heat exchanger, a dust removal bag, and a dust removal bag. exchanger and a circulating pump connected to the controller; the heat exchanger includes a shell and a heat exchange tube group; detachable connecting covers are respectively provided at both ends of the shell, one of the connecting covers is provided with a heat source inlet for introducing the tail gas produced by the gold beneficiation agent, and the other connecting cover is provided with a heat source outlet, and the heat source outlet is connected to the inlet of the dust removal bag; a heat exchange tube group is also provided in the shell, and the heat exchange tube group extends outward through the shell to form a cold source inlet and a cold source outlet, and the cold source inlet and the cold source outlet are respectively connected to the heat circulation interlayer of the thermal storage incinerator through connecting pipes; the circulating pump is arranged on the connecting pipe between the cold source inlet and the heat circulation interlayer.

[0007] The inlet of the heat exchanger is connected to the tail gas pipe of the gold mineral processing agent production equipment, and the heat exchanger, connecting pipe, and the interlayer of the heat exchanger and the heat storage incinerator are filled with a fluid medium for heat exchange. When in use, the tail gas generated by the production is passed into the heat exchanger, and at the same time, the controller controls the circulation pump to start, and the circulation pump moves, so that the fluid medium circulates in the heat exchanger, the connecting pipe, and the heat storage incinerator, and transfers part of the heat in the tail gas to the heat circulation interlayer through the fluid medium, and preliminarily heats the furnace body, so that the furnace body temperature is higher when the tail gas is incinerated, thereby improving the incineration effect and reducing the impact of the temperature difference on the furnace body. The detachable design of the connecting covers at both ends of the shell facilitates the disassembly and cleaning of the heat exchange tube group after long-term use. The controller can be a single-chip microcomputer or a PLC controller.

[0008] Furthermore, the connection cover is provided with a connection groove and screws; threaded through holes are provided at positions corresponding to the screws on the housing; and a connecting piece is provided at the position where the heat exchange tube group mates with the groove. One side of the connecting piece engages with the connection cover's groove, and the other side is provided with a screw for connecting to the housing. The connection cover and the housing are connected together by the groove and fixed by the screws. The groove and the housing have a good sealing effect and are easy to use.

[0009] Furthermore, the heat exchange tube group is a spiral hollow tube. The exhaust gas passes through the shell of the heat exchanger, and the fluid medium flows in the spiral hollow tube group, the medium is heated, and the heated medium moves to the heat circulation interlayer of the thermal storage incinerator to heat the furnace body.

[0010] Furthermore, the heat storage incinerator has a three-bed structure, and its interior is divided into three heat storage chambers and a combustion chamber where heat storage beds are installed. An air inlet pipe group and an air outlet pipe group are respectively connected to the three heat storage chambers and connected to the controller. The combustion chamber is also provided with a burner and a gas dispersion pipe group respectively connected to the controller, and the inlet of the gas dispersion pipe group extends outward from the combustion chamber; the inlet of the air inlet pipe group is connected to the dust removal bag, and a fan connected to the controller is provided behind the dust removal bag; the outlet on the air outlet pipe group is connected to the impurity removal device. The gas dispersion pipe group introduces air or a mixture of air and fuel gas. The operating principle of this regenerative incinerator is the same as the principle and operating method of the existing three-bed regenerative incinerator. The difference is that the exhaust gas first passes through the dust removal bag on the air inlet pipe group to filter out the dust particles contained in the exhaust gas. After the exhaust gas is incinerated, it is connected to the impurity removal device through the exhaust pipe group for impurity removal operation, and the sulfur-containing gas and its compounds mixed in the exhaust gas are completely removed. The impurity removal effect is good, and the impact of exhaust gas discharge on the air is reduced. The gas dispersion pipe group can make the introduced gas evenly dispersed in the combustion chamber, so that the exhaust gas is fully mixed with it, the exhaust gas is incinerated more thoroughly, and the incineration effect is good.

[0011] Furthermore, the inlet and outlet pipe groups each include a main pipe and three branch pipes connected to the main pipe. The inlet pipe group's main pipe inlet is connected to the dust bag, and the branch pipes are respectively connected to the three regenerative incinerators. Each of the three branch pipes is equipped with a solenoid valve A, a solenoid valve B, and a solenoid valve C connected to the controller. The outlet pipe group's branch pipes are respectively connected to the three regenerative incinerators, and each of the three branch pipes is equipped with a solenoid valve D, a solenoid valve E, and a solenoid valve F connected to the controller. The controller controls each solenoid valve to achieve overall control of the inlet and outlet gases of the regenerative incinerator, making control more convenient and accurate.

[0012] Furthermore, the gas dispersion tube assembly is a concave, zigzag tube with an air inlet opening on the outside and several air outlet nozzles on the inside. The zigzag tube is fixedly attached to the top surface and both sides of the combustion chamber, with the air inlet opening extending outward through the combustion chamber. Air or a mixture of air and gas enters the zigzag tube through the air inlet opening and is evenly diffused within the combustion chamber by the zigzag tube, fully mixing with the incoming exhaust gas. This ensures more complete combustion of the exhaust gas during subsequent ignition and combustion, resulting in a better performance.

[0013] Furthermore, the impurity removal device includes an impurity removal tank and a waste liquid recovery tank; the impurity removal tank is provided with an air inlet pipe, an air outlet at the top, and a liquid outlet with a switch at the bottom, wherein the impurity removal tank is filled with an absorption liquid, and the air inlet pipe is immersed in the absorption liquid; the liquid outlet is connected to the liquid inlet of the waste liquid recovery tank. The absorption liquid is a solution for absorbing sulfur-containing gases, and sodium hydroxide solution is used here. The air inlet pipe is connected to the air outlet of the regenerative incinerator, and the air outlet is connected to the chimney. The exhaust gas after incineration enters the impurity removal tank, and the sulfur-containing gas and other acidic gases will be absorbed by the sodium hydroxide. The remaining gas is then discharged through the chimney. The absorption liquid is recovered by the waste liquid recovery tank, and the waste liquid is recycled. While reducing the pollution of the exhaust gas to the environment, the waste liquid can be recycled and reused, avoiding production waste.

[0014] Principle of the present invention:

[0015] During use, the tail gas generated by the production of gold mineral processing agents flows into the tail gas pretreatment device, part of the heat in the tail gas is recovered, and the heat is transferred to the thermal circulation interlayer of the regenerative incinerator to preheat the regenerative incinerator. The tail gas then enters the regenerative incinerator for incineration to remove all toxic and harmful gases in the tail gas. The tail gas after incineration flows into the impurity removal device for impurity removal. The objects in the impurity removal device can be purified and recycled to reduce resource waste. After removing sulfur-containing gases and harmful impurities, the tail gas is discharged through the chimney.

[0016] A method for treating tail gas from gold beneficiation agent production equipment, wherein the regenerators are respectively named as a first regenerator, a second regenerator, and a third regenerator, comprising the following steps:

[0017] S1: When in use, the controller of the tail gas treatment equipment is turned on. The tail gas generated by the gold beneficiation agent production enters the tail gas treatment equipment and first enters the tail gas pretreatment device. The tail gas pretreatment device transfers part of the heat of the tail gas to the regenerative incinerator to initially heat it up.

[0018] The treatment process of the tail gas pretreatment device is as follows:

[0019] S11: The exhaust gas enters the shell from the heat source inlet, and the circulation pump is turned on at the same time. The fluid medium circulates in the heat exchange tube group, the connecting pipe and the heat circulation interlayer to preliminarily heat the furnace body of the thermal storage incinerator;

[0020] S2: exhaust gas flows out from the exhaust gas pretreatment device and enters the regenerative incinerator for dust removal and incineration in sequence;

[0021] S21: The exhaust gas passes through the dust removal bag installed on the intake pipe group to filter out the dust particles contained;

[0022] S22: The exhaust gas after dust filtration is sent to the furnace body by the fan through the air inlet pipe group, and the exhaust gas passes through the first regenerator of the furnace body to reach the combustion chamber;

[0023] S23: The gas dispersion pipe takes in air, and the exhaust gas mixes with the incoming air;

[0024] S24: Turn on the burner, and the mixture of exhaust gas and air is burned in the combustion furnace;

[0025] S25: After the exhaust gas is completely burned, it passes through the second regenerator. At this time, the regenerator bed in the second regenerator absorbs heat, and the exhaust gas is cooled. The cooled exhaust gas flows through the outlet pipe group to the impurity removal tank of the impurity removal device;

[0026] S26: The exhaust gas then enters the second regenerator through the intake pipe group. At this time, the exhaust gas absorbs the temperature of the regenerator bed and heats up, while the regenerator bed cools down. The heated exhaust gas enters the combustion chamber and burns. After combustion is completed, it is discharged from the third regenerator through the outlet pipe group.

[0027] S27: The exhaust gas then enters the third regenerator to be heated and then burns in the combustion chamber. After the combustion is completed, it is discharged from the first regenerator through the outlet pipe group.

[0028] S28: Circulation S22-S27, that is, the circulation process of tail gas in the furnace body;

[0029] S3: The tail gas enters the impurity removal tank and mixes with the absorption liquid to remove the sulfur-containing gas mixed in the tail gas. The tail gas then flows to the chimney through the gas outlet and is discharged to the outside. The absorption liquid that absorbs the sulfur-containing gas can enter the waste liquid recovery tank for recycling.

[0030] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0031] 1. The present invention improves the traditional regenerative incinerator by setting up an exhaust pretreatment device and a dust removal bag. The furnace body can be initially heated up during use, solving the problem that the traditional furnace body is easily damaged due to excessive heating. The dust removal bag can perform dust removal before the exhaust gas is incinerated, solving the problem that there is too much dust in the furnace body that is difficult to clean. The exhaust gas is removed from the sulfur-containing gas through the impurity removal device before being discharged, reducing environmental pollution. The elements in the impurity removal device can be recycled, reducing environmental pollution while improving economic efficiency. The whole is controlled by a controller, which is convenient to operate.

[0032] 2. The exhaust gas pretreatment device of the present invention realizes fluid circulation to heat the thermal circulation interlayer of the furnace body through the cooperation of the heat exchanger, the connecting pipe and the circulating pump, which is convenient to use. The detachable connecting covers at both ends of the heat exchange shell are convenient for taking out the heat exchange tubes, and convenient for cleaning the shell and the heat exchange tube group; the groove on the connecting cover is convenient for connection with the shell, and the connection is reinforced by screws, and the sealing is good; the adsorbent of the impurity removal device will adsorb the sulfur-containing gas in the exhaust gas through the impurity removal tank, and then the liquid will be recovered through the waste liquid recovery tank, and the waste liquid will be recycled, saving resources and making the tail emissions more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the connection relationship between various devices of the present invention.

[0034] Figure 2 It is a schematic diagram of the internal structure of the heat exchanger of the present invention.

[0035] Figure 3 It is a schematic diagram of the connection relationship between the shell and the connecting cover of the present invention.

[0036] Figure 4 It is a schematic diagram of the internal structure of the regenerative incinerator of the present invention.

[0037] Figure 5 This is a schematic diagram of the internal structure of the impurity removal tank of the impurity removal device of the present invention.

[0038] Figure ID:

[0039] Controller-1, exhaust gas pretreatment device-2, heat exchanger-21, shell-211, heat exchange tube group-212, connecting cover-213, heat source inlet-214, heat source outlet-215, cold source inlet-216, cold source outlet-217, connecting piece-218, connecting pipe-22, circulating pump-23, thermal storage incinerator-3, furnace body-31, thermal circulation interlayer-311, dust removal bag-32, thermal storage chamber-33, combustion chamber-34, air inlet pipe group-35, electric Magnetic valve A-351, solenoid valve B-352, solenoid valve C-353, air outlet pipe assembly-36, solenoid valve D-361, solenoid valve E-362, solenoid valve F-363, burner-37, gas dispersion pipe assembly-38, air inlet pipe-381, air outlet nozzle-382, fan-39, impurity removal device-4, impurity removal tank-41, air inlet pipe-411, air outlet-412, liquid outlet-413, absorption liquid-414, waste liquid recovery tank-42, chimney-5. DETAILED DESCRIPTION

[0040] The present invention will be further described below with reference to the accompanying drawings.

[0041] Example 1: Figures 1 to 3As shown, a tail gas treatment equipment for the production of gold mineral processing agent includes a controller 1 and a tail gas pretreatment device 2, a regenerative incinerator 3, an impurity removal device 4 and a chimney 5 connected in sequence; the tail gas pretreatment device 2 transfers part of the heat of the tail gas to the regenerative incinerator 3 to make it initially heated; a heat circulation interlayer 311 is provided on the furnace body 31 of the regenerative incinerator 3, and a dust removal bag 32 is also connected to the furnace body 31, and the tail gas pretreatment device 2 is connected to the heat circulation interlayer 311; the impurity removal device 4 filters the tail gas after incineration again to remove the sulfur-containing gas after incineration; the controller 1 is respectively connected to the tail gas pretreatment device 2 and the regenerative incinerator 3; the tail gas pretreatment device 2 includes a heat exchanger 21 and a circulation pump 23 connected to the controller 1; the heat The exchanger 21 includes a shell 211 and a heat exchange tube group 212; detachable connecting covers 213 are respectively provided at both ends of the shell 211, one of the connecting covers 213 is provided with a heat source inlet 214 for introducing the tail gas produced by the gold beneficiation agent, and the other connecting cover 213 is provided with a heat source outlet 215, and the heat source outlet 215 is connected to the inlet of the dust removal bag 32; a heat exchange tube group 212 is also provided in the shell 211, and the heat exchange tube group 212 extends outward through the shell 211 to form a cold source inlet 216 and a cold source outlet 217, and the cold source inlet 216 and the cold source outlet 217 are respectively connected to the heat circulation interlayer 311 of the thermal storage incinerator 3 through the connecting pipe 22; the circulating pump 23 is provided on the connecting pipe between the cold source inlet 216 and the heat circulation interlayer 311;

[0042] The connection cover 213 is provided with a connecting groove and screws; threaded through-holes are provided at positions corresponding to the screws on the housing 211; a connecting piece 218 is provided at the position where the heat exchange tube group 212 fits in the groove. One side of the connecting piece 218 engages with the groove in the connection cover 213, and the other side is provided with a screw for connecting to the housing 211. The connection cover 213 and the housing 211 are connected together by the groove and fixed with screws. The groove and the housing 211 form a good sealing effect and are easy to use.

[0043] The heat exchange tube group 212 is a spiral hollow tube. The exhaust gas passes through the heat exchanger shell 211, and the fluid medium flows in the spiral hollow tube group, heating the medium. The heated medium moves to the heat circulation interlayer 311 of the thermal storage incinerator 3 to heat the furnace body 31.

[0044] The furnace body 31 of the regenerative incinerator 3 is a three-bed structure, and the interior is divided into three regenerative chambers 33 with regenerative beds installed and a combustion chamber 34. The outside of the furnace body 31 is provided with an air inlet pipe group 35 and an air outlet pipe group 36 that are respectively connected to the three regenerative chambers 33 and connected to the controller 1, wherein the combustion chamber 34 is also provided with a burner 37 and a gas dispersion pipe group 38 that are respectively connected to the controller 1, and the inlet of the gas dispersion pipe group 38 extends outward through the combustion chamber 34; the air inlet pipe group 35 is connected to the exhaust gas pretreatment device 2, and a dust removal bag 32 is detachably provided at the inlet, and a fan 39 connected to the controller 1 is provided behind the dust removal bag 32; the outlet on the air outlet pipe group 36 is connected to the impurity removal device 4. The gas dispersion pipe group 38 introduces air or a mixture of air and fuel gas. The operating principle of the regenerative incinerator 3 is the same as the principle and operating method of the existing three-bed regenerative incinerator. The difference is that the exhaust gas first passes through the dust removal bag 32 on the air inlet pipe group 35 to filter out the dust particles contained in the exhaust gas. After the exhaust gas is incinerated, it is connected to the impurity removal device 4 through the exhaust pipe group 36 for impurity removal operation, and the sulfur-containing gas and its compounds mixed in the exhaust gas are completely removed. The impurity removal effect is good, and the impact of exhaust gas discharge on the air is reduced. The gas dispersion pipe group 38 can make the introduced gas evenly dispersed in the combustion chamber 34, so that the exhaust gas is fully mixed with it, the exhaust gas is incinerated more thoroughly, and the incineration effect is good.

[0045] During use, the tail gas generated by gold beneficiation agent production flows into the tail gas pretreatment device 2, where some of the heat in the tail gas is recovered and transferred to the heat circulation interlayer 311 of the regenerative incinerator 3, preheating the regenerative incinerator 3. The tail gas then enters the regenerative incinerator 3 for incineration, completely removing the hydrogen cyanide gas contained in the tail gas. The incinerated tail gas then flows into the impurity removal device 4 for impurity removal. After the sulfur-containing gas and harmful impurities are removed, the tail gas is discharged through the chimney 5. The controller can be a single-chip microcomputer or a PLC controller.

[0046] Example 2: Figure 4 As shown, the tail gas treatment equipment for gold ore dressing production described in this embodiment differs from the equipment described in Example 1 only in that the inlet pipe group 35 and the outlet pipe group 36 each include a main pipe and three branch pipes connected to the main pipe. A dust bag 32 is installed at the junction of the inlet of the main pipe of the inlet pipe group 35 and the outlet of the tail gas pretreatment device 2. A fan 39 is also connected to the dust bag 32. The branch pipes are connected to the three regenerative incinerators, and each of the three branch pipes is equipped with a solenoid valve A351, a solenoid valve B352, and a solenoid valve C353 connected to the controller 1. The branch pipes of the outlet pipe group 36 are connected to the three regenerative incinerators, and each of the three branch pipes is equipped with a solenoid valve D361, a solenoid valve E362, and a solenoid valve F363 connected to the controller 1. The controller 1 controls the individual solenoid valves to achieve overall control of the gas inlet and outlet of the regenerative incinerator 3, making control more convenient and accurate.

[0047] The gas dispersion tube assembly 38 is a concave, zigzag tube with an air inlet opening 381 on the outside and several air outlet nozzles 382 on the inside. The zigzag tubes are fixedly attached to the top and sides of the combustion chamber 34, with the air inlet openings 381 extending outward through the combustion chamber 34. Air or a mixture of air and gas enters the zigzag tubes through the air inlet openings 381, where it is evenly diffused within the combustion chamber 34 and thoroughly mixed with the incoming exhaust gas. This ensures more complete combustion of the exhaust gas during subsequent ignition and combustion, resulting in a more effective combustion experience.

[0048] Example 3: Figure 5 As shown, the tail gas treatment equipment for gold mineral processing agent production described in this embodiment is different from the equipment described in Example 2 only in that the impurity removal device 4 includes an impurity removal tank 41 and a waste liquid recovery tank 42; an air inlet pipe 411 is provided inside the impurity removal tank 41, an air outlet 412 is provided on the top, and a liquid outlet 413 with a switch is provided at the bottom, wherein the impurity removal tank 41 is filled with an absorption liquid 414, and the air inlet pipe 411 is immersed in the absorption liquid 414; the liquid outlet 413 is connected to the liquid inlet of the waste liquid recovery tank 42. The absorption liquid 414 is a solution for absorbing sulfur-containing gases, and sodium hydroxide solution is used here. The air inlet pipe 411 is connected to the air outlet 412 of the regenerative incinerator 3, and the air outlet 412 is connected to the chimney 5. The tail gas after incineration enters the impurity removal tank 41, and the sulfur-containing gas and other acidic gases will be absorbed by the sodium hydroxide. The remaining gas is then discharged through the chimney 5. The absorption liquid 414 is recovered through the waste liquid recovery tank 42, and the waste liquid is recycled. While reducing the pollution of the tail gas to the environment, the waste liquid can be recycled to avoid production waste.

[0049] The method for treating tail gas from gold beneficiation production in this embodiment, wherein the regenerators 33 are respectively named the first regenerator, the second regenerator, and the third regenerator, comprises the following steps:

[0050] S1: When in use, the controller 1 of the tail gas treatment equipment is turned on. Under the control of the controller 1, the tail gas generated by the production of gold beneficiation agent enters the tail gas treatment equipment and first enters the tail gas pretreatment device 2. The tail gas pretreatment device 2 transfers part of the heat of the tail gas to the regenerative incinerator 3 to cause it to be initially heated;

[0051] The processing process of the tail gas pretreatment device 2 is:

[0052] S11: exhaust gas enters the shell 211 from the heat source inlet 214, and the circulation pump 23 is turned on. The fluid medium circulates in the heat exchange tube group 212, the connecting pipe 22 and the heat circulation interlayer 311, and preliminarily heats the furnace body 31 of the regenerative incinerator 3;

[0053] S2: exhaust gas flows out from the exhaust gas pretreatment device 2 and enters the regenerative incinerator 3 for dust removal and incineration;

[0054] S21: The exhaust gas passes through the dust removal bag 32 provided on the intake pipe assembly 35 to filter out the dust particles contained therein;

[0055] S22: The exhaust gas after dust filtration is sent to the furnace body 31 by the fan 39 through the air inlet pipe group 35. The exhaust gas passes through the first regenerator of the furnace body 31 and reaches the combustion chamber 34.

[0056] S23: The gas dispersion pipe takes in air, and the exhaust gas mixes with the incoming air;

[0057] S24: Turn on the burner 37, and the mixture of exhaust gas and air is burned in the combustion furnace;

[0058] S25: After the exhaust gas is completely burned, it passes through the second regenerator. At this time, the regenerator bed in the second regenerator absorbs heat, and the exhaust gas cools down. The cooled exhaust gas flows through the outlet pipe group 36 to the impurity removal tank 41 of the impurity removal device 4;

[0059] S26: The exhaust gas then enters the second regenerator through the intake pipe group 35. At this time, the exhaust gas absorbs the temperature of the regenerator bed, which increases, and the regenerator bed cools down. The heated exhaust gas enters the combustion chamber 34 and is burned. After combustion is completed, it is discharged from the third regenerator through the outlet pipe group 36.

[0060] S27: The exhaust gas then enters the third regenerator and is heated before being burned in the combustion chamber 34. After combustion is complete, it is discharged from the first regenerator through the outlet pipe group 36.

[0061] S28: Circulation S22-S27, i.e., the tail gas circulation process in the furnace body 31;

[0062] S3: The tail gas enters the impurity removal tank 41 and mixes with the absorption liquid 414 to remove the sulfur-containing gas mixed in the tail gas. The tail gas then flows to the chimney 5 through the gas outlet 412 and is discharged to the outside. The absorption liquid 414 that absorbs the sulfur-containing gas can enter the waste liquid recovery tank 42 for recycling.

[0063] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A tail gas treatment device for gold beneficiation agent production, characterized by: The invention comprises a controller (1) and an exhaust gas pretreatment device (2), a regenerative incinerator (3), an impurity removal device (4) and a chimney (5) connected in sequence; the exhaust gas pretreatment device (2) transfers part of the heat of the exhaust gas to the regenerative incinerator (3) to cause it to be initially heated; a heat circulation interlayer (311) is provided on the furnace body (31) of the regenerative incinerator (3), and the furnace body (31) is also connected to a dust removal bag (32); the exhaust gas pretreatment device (2) is connected to the heat circulation interlayer (311); the impurity removal device (4) filters the exhaust gas after incineration again to remove the sulfur-containing gas after incineration; the controller (1) is connected to the exhaust gas pretreatment device (2) and the regenerative incinerator (3); the exhaust gas pretreatment device (2) comprises a heat exchanger (21) and a circulation pump (23) connected to the controller (1); the heat exchanger (21) comprises a shell (2 11), heat exchange tube group (212); detachable connecting covers (213) are respectively provided at both ends of the shell (211), wherein one connecting cover (213) is provided with a heat source inlet (214) for introducing tail gas from the production of gold beneficiation agent, and the other connecting cover (213) is provided with a heat source outlet (215), and the heat source outlet (215) is connected to the inlet of the dust removal bag (32); a heat exchange tube group (212) is further provided in the shell (211), and the heat exchange tube group (212) extends outward through the shell (211) to form a cold source inlet (216) and a cold source outlet (217), and the cold source inlet (216) and the cold source outlet (217) are respectively connected to the heat circulation interlayer (311) of the thermal storage incinerator (3) through the connecting pipe (22); the circulating pump (23) is provided on the connecting pipe between the cold source inlet (216) and the heat circulation interlayer (311).

2. The tail gas treatment equipment for gold dressing agent production according to claim 1, characterized in that: The connection cover (213) is provided with a connection groove and a screw; the shell (211) is provided with a threaded through hole at a position corresponding to the screw; the heat exchange tube group (212) is provided with a connection piece (218) at a position matching the groove; one side of the connection piece (218) is embedded in the groove of the connection cover (213), and the other side is provided with a screw for connecting to the shell (211).

3. The tail gas treatment equipment for gold dressing agent production according to claim 2, characterized in that: The heat exchange tube group (212) is a spiral hollow tube.

4. The tail gas treatment equipment for gold dressing agent production according to claim 3, characterized in that: The regenerative incinerator (3) has a furnace body (31) of a three-bed structure, and is internally divided into three regenerative chambers (33) on which regenerative beds are installed, and a combustion chamber (34). An air inlet pipe group (35) and an air outlet pipe group (36) are provided on the outside of the furnace body (31), which are connected to the three regenerative chambers (33) and are connected to the controller (1). A burner (37) and a gas dispersion pipe group (38) connected to the controller (1) are also provided in the combustion chamber (34). The inlet of the gas dispersion pipe group (38) extends outward from the combustion chamber (34). The inlet of the air inlet pipe group is connected to a dust bag (32), and a fan (39) connected to the controller (1) is provided behind the dust bag (32). The outlet of the air outlet pipe group (36) is connected to a dust removal device (4).

5. The tail gas treatment equipment for gold dressing agent production according to claim 4, characterized in that: The air inlet pipe group (35) and the air outlet pipe group (36) each include a main pipe and three branch pipes connected to the main pipe, wherein the inlet of the main pipe of the air inlet pipe group (35) is connected to the dust bag (32), the branch pipes are respectively connected to the three heat storage type, and the three branch pipes are respectively provided with a solenoid valve A (351), a solenoid valve B (352) and a solenoid valve C (353) connected to the controller (1); the branch pipes of the air outlet pipe group (36) are respectively connected to the three heat storage type, and the three branch pipes are respectively provided with a solenoid valve D (361), a solenoid valve E (362) and a solenoid valve F (363) connected to the controller (1).

6. The tail gas treatment equipment for gold dressing agent production according to claim 5, characterized in that: The gas dispersion tube group (38) is a concave folded line tube, with an air inlet (381) provided on the outside of the folded line tube and a plurality of air outlet nozzles (382) provided on the inner side; the folded line tube is fixedly arranged on the top surface and both sides of the combustion chamber (34), and the air inlet (381) passes through the combustion chamber (34) and extends outward.

7. The tail gas treatment equipment for gold dressing agent production according to claim 6, characterized in that: The impurity removal device (4) comprises an impurity removal tank (41) and a waste liquid recovery tank (42); an air inlet pipe (411) is provided inside the impurity removal tank (41), an air outlet (412) is provided at the top, and a liquid outlet (413) with a switch is provided at the bottom; an absorption liquid (414) is contained in the impurity removal tank (41), and the air inlet pipe (411) is immersed in the absorption liquid (414); the liquid outlet (413) is communicated with the liquid inlet of the waste liquid recovery tank (42).

8. The method for using the tail gas treatment equipment for gold beneficiation agent production according to claim 7, characterized in that: The heat storage chambers (33) are respectively named as the first heat storage chamber, the second heat storage chamber and the third heat storage chamber, and include the following steps: S1: When in use, the controller (1) of the tail gas treatment equipment is turned on. The tail gas generated by the gold beneficiation agent production enters the tail gas treatment equipment under the control of the controller (1), and first enters the tail gas pretreatment device (2). The tail gas pretreatment device (2) transfers part of the heat of the tail gas to the regenerative incinerator (3) to cause it to be initially heated; The treatment process of the tail gas pretreatment device (2) is as follows: S11: exhaust gas enters the shell (211) from the heat source inlet (214), and the circulation pump (23) is turned on. The fluid medium circulates in the heat exchange tube group (212), the connecting pipe (22) and the heat circulation interlayer (311), and the furnace body (31) of the thermal storage incinerator (3) is preliminarily heated; S2: exhaust gas flows out from the exhaust gas pretreatment device (2) and enters the regenerative incinerator (3) for dust removal and incineration; S21: The exhaust gas passes through the dust removal bag (32) provided on the intake pipe group (35) to filter out the dust particles contained therein; S22: The exhaust gas after dust filtration is sent to the furnace body (31) through the air inlet pipe group (35) by the fan (39), and the exhaust gas passes through the first regenerator of the furnace body (31) to reach the combustion chamber (34); S23: The gas dispersion pipe takes in air, and the exhaust gas mixes with the incoming air; S24: Turn on the burner (37), and the mixture of exhaust gas and air is burned in the combustion furnace; S25: After the exhaust gas is completely burned, it passes through the second regenerator. At this time, the regenerator bed of the second regenerator absorbs heat, and the exhaust gas is cooled. The cooled exhaust gas flows through the outlet pipe group (36) to the impurity removal tank (41) of the impurity removal device (4); S26: The exhaust gas then enters the second regenerator through the air inlet pipe group (35). At this time, the exhaust gas absorbs the temperature of the regenerator bed and heats up, while the regenerator bed cools down. The heated exhaust gas enters the combustion chamber (34) and burns. After combustion is completed, it is discharged from the third regenerator through the air outlet pipe group (36). S27: The exhaust gas then enters the third regenerator and is heated and then burned in the combustion chamber (34). After the combustion is completed, the exhaust gas is discharged from the first regenerator through the outlet pipe group (36); S28: Circulation S22-S27, i.e. the circulation process of the tail gas in the furnace body (31); S3: The tail gas enters the impurity removal tank (41) and is mixed with the absorption liquid (414) to remove the sulfur-containing gas mixed in the tail gas. The tail gas then flows through the gas outlet (412) to the chimney (5) and is discharged to the outside. The absorption liquid (414) that absorbs the sulfur-containing gas can enter the waste liquid recovery tank (42) for recycling.

Images