Concentrated desulfurization waste liquid drying equipment

Abstract

The utility model relates to the technical field of desulfurization waste liquid drying, and discloses concentrated desulfurization waste liquid drying equipment, which comprises a drying tower, a circulating desulfurization waste liquid drying mechanism; a jacking airflow generating part is mounted at the bottom of an inner cavity of the drying tower; the drying tower is further provided with a water vapor absorbing and filtering mechanism. The circulating type desulfurization waste liquid drying mechanism can continuously concentrate and dry desulfurization waste liquid in a circulating working mode, and the jacking airflow generating part can generate upward jacking airflow at the bottom of an inner cavity of the drying tower when working. The air flow which is jacked upwards not only can uniformly distribute heat generated by heating of the annular electric heating shell to everywhere of the inner cavity of the drying tower so as to accelerate the evaporation and drying process of the vaporific desulfurization waste liquid, but also can upwards blow the vaporific desulfurization waste liquid which falls downwards; and the vaporific desulfurization waste liquid in the falling process in the drying tower can be continuously contacted with the annular electric heating shell for multiple times, so that the evaporation drying effect of the desulfurization waste liquid is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization waste liquid drying, in particular to concentrated desulfurization waste liquid drying equipment. Background Art

[0002] In the prior art, desulfurization waste liquid is generally dried by using desulfurization waste liquid drying equipment. Most of the prior desulfurization waste liquid drying equipment can only perform a single drying treatment on the desulfurization waste liquid, but cannot perform a concentrated treatment on the desulfurization waste liquid by a circulating drying method.

[0003] For example, a concentrated desulfurization waste liquid drying device is disclosed in the Chinese utility model patent with announcement number CN210237177U. The desulfurization waste liquid drying device disclosed in the patent can only perform a single drying treatment on the desulfurization waste liquid, but cannot perform a concentrated treatment on the desulfurization waste liquid in a circulating drying manner.

[0004] Based on this, a concentrated desulfurization waste liquid drying equipment is proposed. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the utility model provides a concentrated desulfurization waste liquid drying equipment to solve the problem raised in the background technology: most of the existing desulfurization waste liquid drying equipment can only perform a single drying treatment on the desulfurization waste liquid, but cannot perform a concentrated treatment on the desulfurization waste liquid in a circulating drying manner.

[0007] (II) Technical solution

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A concentrated desulfurization waste liquid drying device, comprising:

[0010] A drying tower, wherein the top and bottom of the drying tower are respectively fastened with an upper cover plate and a lower cover plate by a plurality of bolts, and the upper and lower parts of the drying tower are respectively provided with a plurality of circumferentially distributed upper conical parts and lower conical parts;

[0011] A circulating desulfurization waste liquid drying mechanism, wherein the circulating desulfurization waste liquid drying mechanism is installed on a drying tower;

[0012] The circulating desulfurization waste liquid drying mechanism comprises a three-way valve, which is in a horizontal T-shape, with the top and bottom ends being the feed ends and the middle end being the discharge end. The top feed end of the three-way valve is connected to a waste liquid feed pipe, and the middle discharge end of the three-way valve is connected to a waste liquid delivery pipe.

[0013] The circulating desulfurization waste liquid drying mechanism also includes a first pump, which is fixedly mounted on the upper cover plate, and a discharge end of the first pump passes downward through the upper cover plate and extends into the inner cavity of the drying tower, and the discharge end of the first pump is connected to a tubular atomizing nozzle, and an annular electric heating shell is arranged outside the tubular atomizing nozzle, and one end of the top of the annular electric heating shell is fixedly connected to the bottom of the upper cover plate;

[0014] The waste liquid delivery pipe is connected to the feed end of the first pump at one end away from the three-way valve;

[0015] The circulating desulfurization waste liquid drying mechanism also includes a waste liquid circulating liquid return pipe, one end of which is connected to the bottom feed end of the three-way valve;

[0016] The circulating desulfurization waste liquid drying mechanism also includes a second pumping pump, which is arranged on one side of the drying tower, and the feed end of the second pumping pump is connected to a waste liquid circulation pumping pipe, and the waste liquid circulation pumping pipe is connected to the bottom of the lower cone portion at one end away from the second pumping pump, and the discharge end of the second pumping pump is connected to the waste liquid circulation return pipe at one end away from the three-way valve;

[0017] A lifting airflow generating component is installed at the bottom of the inner cavity of the drying tower;

[0018] The drying tower is also equipped with a water vapor absorption and filtering mechanism.

[0019] Preferably, the side wall of the tubular atomizing nozzle has a plurality of spray holes, and one end of the bottom is closed;

[0020] The side wall of the annular electric heating shell is provided with a plurality of micro holes.

[0021] Preferably, a first valve is fixedly installed on the top feed end of the three-way valve, and a second valve is fixedly installed on the bottom feed end of the three-way valve.

[0022] Preferably, an upper assembly hole is opened at the center of the upper cover plate, and the discharge end of the first material pump passes downward through the upper assembly hole;

[0023] A suction hole is provided at the bottom edge of one of the lower conical parts, and the waste liquid circulation suction pipe is fixedly mounted on the suction hole at one end away from the second suction pump;

[0024] The waste liquid circulation pumping pipe has a plurality of bending parts, and the waste liquid circulation pumping pipe is C-shaped.

[0025] Preferably, the lifting airflow generating component includes a motor, which is fixedly mounted on the bottom of the lower cover plate, and the output shaft of the motor passes upward from the lower cover plate and extends into the inner cavity of the drying tower, and a spiral fan blade is fixedly mounted on the output shaft of the motor.

[0026] Preferably, a plurality of absorption slots are provided from top to bottom on one side wall of the drying tower;

[0027] The water vapor absorption filter mechanism comprises a suction box, on which a plurality of suction heads matching the absorption slots are fixedly mounted, the inner cavity of each suction head is connected to the inner cavity of the suction box, and a first-stage adsorption filter is detachably mounted in each suction head;

[0028] Each of the suction heads is plugged and installed in a corresponding absorption slot;

[0029] The suction box has a connector on a side away from the suction head, and the connector is connected to the inner cavity of the suction box;

[0030] The water vapor absorption and filtering mechanism also includes a vacuum pump, the feed end of the vacuum pump is connected to an air extraction pipe, the air extraction pipe is plugged and installed in a connector at one end away from the vacuum pump, and the discharge end of the vacuum pump is connected to an air delivery pipe;

[0031] The water vapor absorption filter mechanism also includes an adsorption filter box, the air delivery pipe is connected to the bottom of the adsorption filter box at one end away from the vacuum pump, and the top of the adsorption filter box is connected to an exhaust pipe;

[0032] A second-stage adsorption filter element is installed in the inner cavity of the adsorption filter box.

[0033] Preferably, the plurality of first-stage adsorption filter elements all include activated carbon honeycomb adsorption blocks, and each of the activated carbon honeycomb adsorption blocks is plugged and installed in a corresponding suction head.

[0034] Preferably, each of the activated carbon honeycomb adsorption blocks has a plurality of honeycomb holes.

[0035] Preferably, the second-stage adsorption filter element is a water-absorbing resin filter plate, and the water-absorbing resin filter plate is fixedly installed in the middle of the inner cavity of the adsorption filter box.

[0036] Preferably, the water-absorbing resin filter plate has a plurality of flow gaps.

[0037] Beneficial effects:

[0038] The utility model provides a concentrated desulfurization waste liquid drying device, which has the following beneficial effects:

[0039] 1. In the utility model, the circulating desulfurization waste liquid drying mechanism can continuously concentrate and dry the desulfurization waste liquid in the form of circulating work.

[0040] 2. In the utility model, the lifting airflow generating component can generate an upward lifting airflow at the bottom of the inner cavity of the drying tower when working. This upward lifting airflow can not only evenly distribute the heat generated by the heating of the annular electric heating shell throughout the inner cavity of the drying tower to accelerate the evaporation and drying process of the misty desulfurization waste liquid, but also can blow the misty desulfurization waste liquid falling downward upward, so that the misty desulfurization waste liquid in the falling process in the drying tower can contact the annular electric heating shell multiple times and continuously, so as to improve the evaporation and drying effect of the desulfurization waste liquid.

[0041] 3. In the utility model, the gas formed after drying in the drying tower by the annular electric heating shell can be sucked into the water vapor absorption and filtering mechanism for secondary adsorption drying.

[0042] 4. In the utility model, when the motor is working, it can drive the spiral fan blades through its output shaft, so that the spiral fan blades rotate at high speed in the lower part of the inner cavity of the drying tower. When the spiral fan blades rotate at high speed, an upward airflow can be generated from bottom to top. The airflow can lift the atomized desulfurization waste liquid upward, and can also make the heat generated by the heating of the annular electric heating shell evenly distributed in the inner cavity of the drying tower.

[0043] 5. In the utility model, the gas formed after drying in the drying tower by the annular electric heating shell can enter the suction box through multiple suction heads respectively. When the dried gas enters the corresponding suction head, it can also be subjected to the first-stage adsorption and filtration by the first-stage adsorption filter element in each suction head;

[0044] After the dried gas undergoes the first stage of adsorption filtration, under the action of the vacuum pump, the gas will enter the suction pipe through the suction box and the connector, then enter the gas delivery pipe through the suction pipe and the vacuum pump, and then enter the adsorption filter box through the gas delivery pipe. After the gas that has undergone the first stage of adsorption filtration enters the adsorption filter box, it will be subjected to the second stage of adsorption filtration by the second stage adsorption filter element.

[0045] The gas that has passed the second stage of adsorption filtration will be discharged to the outside through the exhaust pipe.

[0046] 6. In the present invention, each first-stage adsorption filter element can be removed from the corresponding suction head to facilitate subsequent replacement.

[0047] 7. In the present invention, the activated carbon honeycomb adsorption block is the preferred form of the first-stage adsorption filter element, and each activated carbon honeycomb adsorption block can perform the first-stage dry adsorption filtration on the desulfurization waste liquid gas;

[0048] The water-absorbent resin filter plate is the preferred form of the second-stage adsorption filter element. The water-absorbent resin filter plate has a high water absorption function of absorbing water that is hundreds to thousands times heavier than itself, thereby better performing the second-stage dry adsorption filtration of the desulfurization waste liquid gas.

[0049] 8. In the present invention, after use, the operator can dismantle the bolts on the upper cover plate, take out the first pump, the tubular atomizing nozzle and the annular electric heating shell, and clean the dirt on the tubular atomizing nozzle and the annular electric heating shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0051] Figure 2 It is a three-dimensional schematic diagram of the utility model after rotating 90° clockwise;

[0052] Figure 3 It is a three-dimensional schematic diagram of a partial cross section of the utility model;

[0053] Figure 4 for Figure 3 The enlarged three-dimensional schematic diagram of part A in the middle;

[0054] Figure 5 for Figure 3 The enlarged three-dimensional schematic diagram of the middle B part;

[0055] Figure 6 It is a three-dimensional schematic diagram of a partial cross section of the water vapor absorption and filtering mechanism of the utility model;

[0056] Figure 7 for Figure 6 The three-dimensional schematic diagram after rotating 90° clockwise;

[0057] Figure 8 It is a three-dimensional schematic diagram of the lifting airflow generating component of the utility model;

[0058] Fig. 9 It is a three-dimensional schematic diagram of the drying tower of the utility model;

[0059] Fig.10 It is a three-dimensional schematic diagram of a drying tower of the utility model from a top view.

[0060] In the figure: 1. drying tower; 101. upper cover plate; 1011. upper assembly hole; 102. lower cover plate; 1021. lower assembly hole; 103. upper cone surface; 104. lower cone surface; 1041. suction hole; 105. absorption slot; 2. circulating desulfurization waste liquid drying mechanism; 201. three-way valve; 2011. first valve; 2012. second valve; 202. waste liquid feed pipe; 203. waste liquid delivery pipe; 204. first pumping pump; 205. tubular atomizing nozzle; 206. circulating shaped electric heating shell; 207, waste liquid circulation return pipe; 208, second extraction pump; 209, waste liquid circulation extraction pipe; 3, lifting airflow generating component; 301, motor; 302, spiral fan blades; 4, water vapor absorption and filtering mechanism; 401, suction box; 4011, connector; 402, suction head; 403, activated carbon honeycomb adsorption block; 404, vacuum pump; 405, exhaust pipe; 406, air supply pipe; 407, adsorption filter box; 408, exhaust pipe; 409, water-absorbing resin filter plate. DETAILED DESCRIPTION

[0061] 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.

[0062] Embodiment 1

[0063] like Figure 1-10 As shown, the utility model provides a technical solution:

[0064] A concentrated desulfurization waste liquid drying device, comprising:

[0065] A drying tower 1, wherein the top and bottom of the drying tower 1 are respectively fastened with an upper cover plate 101 and a lower cover plate 102 by a plurality of bolts, and the upper and lower parts of the drying tower 1 are respectively provided with a plurality of circumferentially distributed upper conical parts 103 and lower conical parts 104;

[0066] A circulating desulfurization waste liquid drying mechanism 2, wherein the circulating desulfurization waste liquid drying mechanism 2 is installed on the drying tower 1;

[0067] The circulating desulfurization waste liquid drying mechanism 2 includes a three-way valve 201, which is in a horizontal T-shape, with the top and bottom ends being the feed ends, and the middle end being the discharge end. The top feed end of the three-way valve 201 is connected to a waste liquid feed pipe 202, and the middle discharge end of the three-way valve 201 is connected to a waste liquid conveying pipe 203.

[0068] The circulating desulfurization waste liquid drying mechanism 2 also includes a first pump 204, which is fixedly mounted on the upper cover plate 101. The discharge end of the first pump 204 passes downward through the upper cover plate 101 and extends into the inner cavity of the drying tower 1. The discharge end of the first pump 204 is connected to a tubular atomizing nozzle 205. An annular electric heating shell 206 is arranged outside the tubular atomizing nozzle 205. One end of the top of the annular electric heating shell 206 is fixedly connected to the bottom of the upper cover plate 101.

[0069] The waste liquid delivery pipe 203 is connected to the feed end of the first pump 204 at one end away from the three-way valve 201;

[0070] The circulating desulfurization waste liquid drying mechanism 2 further includes a waste liquid circulating return pipe 207, one end of which is connected to the bottom feed end of the three-way valve 201;

[0071] The circulating desulfurization waste liquid drying mechanism 2 also includes a second pumping pump 208, which is arranged on one side of the drying tower 1. The feed end of the second pumping pump 208 is connected to a waste liquid circulation pumping pipe 209, and the waste liquid circulation pumping pipe 209 is connected to the bottom of the lower cone portion 104 at one end away from the second pumping pump 208. The discharge end of the second pumping pump 208 is connected to the waste liquid circulation return pipe 207 at one end away from the three-way valve 201.

[0072] Furthermore, the side wall of the tubular atomizing nozzle 205 has a plurality of spray holes, and one end of the bottom is closed;

[0073] The side wall of the annular electric heating shell 206 has a plurality of micro holes;

[0074] Furthermore, a first valve 2011 is fixedly installed on the top feed end of the three-way valve 201, and a second valve 2012 is fixedly installed on the bottom feed end of the three-way valve 201;

[0075] A lifting airflow generating component 3 is installed at the bottom of the inner cavity of the drying tower 1;

[0076] The drying tower 1 is also provided with a water vapor absorption and filtering mechanism 4 .

[0077] In this embodiment, when the desulfurization waste liquid drying equipment is in use, the operator first closes the second valve 2012 and opens the first valve 2011, so that the waste liquid circulation return pipe 207 forms a closed circuit, so that a flow path is formed between the waste liquid feed pipe 202 and the waste liquid delivery pipe 203. At the same time, the power supply of the first pumping pump 204, the annular electric heating shell 206 and the water vapor absorption filter mechanism 4 is turned on. The first pumping pump 204 evenly pumps the desulfurization waste liquid in the waste liquid delivery pipe 203 into the tubular atomizing nozzle 205, and then the desulfurization waste liquid is sprayed outward in the form of atomization through the tubular atomizing nozzle 205. The atomized desulfurization waste liquid will contact the annular electric heating shell 206. Under the heating action of the annular electric heating shell 206, the sprayed desulfurization waste liquid will be evenly heated and dried.

[0078] When the desulfurized waste liquid falling from the annular electric heating shell 206 falls into the bottom of the inner cavity of the drying tower 1, the operator closes the first valve 2011 and opens the second valve 2012 to form a closed circuit between the waste liquid feeding pipe 202 and the waste liquid conveying pipe 203, and a flow path is formed between the waste liquid circulation return pipe 207 and the waste liquid conveying pipe 203. At this time, the power supply of the second pumping pump 208 is turned on at the same time to make the second pumping pump 208 work. The second pumping pump 208 can extract the desulfurized waste liquid at the bottom of the inner cavity of the drying tower 1 through the waste liquid circulation pumping pipe 209, and transport it to the waste liquid conveying pipe 203 through the waste liquid circulation return pipe 207, and then perform secondary circulation drying through the first pumping pump 204, the tubular atomizing nozzle 205 and the annular electric heating shell 206 to achieve the effect of concentration;

[0079] Therefore, the circulating desulfurization waste liquid drying mechanism 2 can continuously concentrate and dry the desulfurization waste liquid in the form of a circulating operation.

[0080] While the circulating desulfurization waste liquid drying mechanism 2 is working, the power supply of the lifting airflow generating component 3 is turned on again to make the lifting airflow generating component 3 work. When the lifting airflow generating component 3 is working, it can generate an upward lifting airflow at the bottom of the inner cavity of the drying tower 1. This upward lifting airflow can not only evenly distribute the heat generated by heating the annular electric heating shell 206 to various parts of the inner cavity of the drying tower 1 to accelerate the evaporation and drying process of the misty desulfurization waste liquid, but also can blow the falling misty desulfurization waste liquid upward, so that the misty desulfurization waste liquid in the falling process in the drying tower 1 can contact the annular electric heating shell 206 repeatedly and continuously, so as to improve the evaporation and drying effect of the desulfurization waste liquid;

[0081] The gas formed after drying in the drying tower 1 by the annular electric heating shell 206 can be sucked into the water vapor absorption filter mechanism 4 for secondary adsorption drying;

[0082] After use, the operator can remove the bolts on the upper cover plate 101, take out the first pump 204, the tubular atomizing nozzle 205 and the annular electric heating shell 206, and clean the dirt on the tubular atomizing nozzle 205 and the annular electric heating shell 206.

[0083] Embodiment 2

[0084] like Figure 1-10 As shown, based on the first embodiment, the following improvements are made:

[0085] In order to facilitate the installation of the first material pump 204, in this embodiment, further, an upper assembly hole 1011 is opened at the center of the upper cover plate 101, and the discharge end of the first material pump 204 passes downward through the upper assembly hole 1011;

[0086] In order to facilitate the connection between the waste liquid circulation pumping pipe 209 and the bottom edge of the lower cone portion 104, in this embodiment, further, a suction hole 1041 is opened at the bottom edge of one of the lower cone portions 104, and the waste liquid circulation pumping pipe 209 is fixedly installed on the suction hole 1041 at one end away from the second pumping pump 208;

[0087] The waste liquid circulation pipe 209 has a plurality of bends and is C-shaped.

[0088] Embodiment 3

[0089] like Figure 1-10 As shown, based on the first embodiment, the following improvements are made:

[0090] In order to optimize the specific structure of the lifting airflow generating component 3, in the present embodiment, further, the lifting airflow generating component 3 includes a motor 301, the motor 301 is fixedly mounted on the bottom of the lower cover plate 102, and the output shaft of the motor 301 passes upward from the lower cover plate 102 and extends into the inner cavity of the drying tower 1, and a spiral fan blade 302 is fixedly mounted on the output shaft of the motor 301. Specifically, when the lifting airflow generating component 3 is working, the power supply of the motor 301 is started to make the motor 301 work. When the motor 301 is working, it can drive the spiral fan blade 302 through its output shaft to make the spiral fan blade 302 rotate at a high speed at the lower part of the inner cavity of the drying tower 1. When the spiral fan blade 302 rotates at a high speed, an upward lifting airflow can be generated from bottom to top, and the airflow can lift the atomized desulfurization waste liquid upward, and can also make the heat generated when the annular electric heating shell 206 is heated evenly distributed in the inner cavity of the drying tower 1.

[0091] In order to facilitate the installation of the lifting airflow generating component 3, in the present embodiment, a lower assembly hole 1021 is further opened at the center of the lower cover plate 102, and the output shaft of the motor 301 can pass upward through the lower assembly hole 1021 and extend into the inner cavity of the drying tower 1.

[0092] Embodiment 4

[0093] like Figure 1-10 As shown, based on the first embodiment, the following improvements are made:

[0094] In order to optimize the specific structure of the water vapor absorption and filtering mechanism 4, in this embodiment, further, a plurality of absorption slots 105 are opened from top to bottom on one side wall of the drying tower 1;

[0095] The water vapor absorption filter mechanism 4 includes a suction box 401, on which a plurality of suction heads 402 matching the absorption slots 105 are fixedly mounted, the inner cavity of each suction head 402 is connected to the inner cavity of the suction box 401, and a first-stage adsorption filter is detachably mounted in each suction head 402;

[0096] Each suction head 402 is plugged and installed in the corresponding absorption slot 105;

[0097] The suction box 401 has a connector 4011 on a side away from the suction head 402, and the connector 4011 is connected to the inner cavity of the suction box 401;

[0098] The water vapor absorption and filtering mechanism 4 also includes a vacuum pump 404. The feeding end of the vacuum pump 404 is connected to an air extraction pipe 405. The air extraction pipe 405 is plugged and installed in a connector 4011 at one end away from the vacuum pump 404. The discharge end of the vacuum pump 404 is connected to an air delivery pipe 406.

[0099] The water vapor absorption filter mechanism 4 also includes an adsorption filter box 407, and the air supply pipe 406 is connected to the bottom of the adsorption filter box 407 at one end away from the vacuum pump 404, and the top of the adsorption filter box 407 is connected to an exhaust pipe 408;

[0100] A second-stage adsorption filter element is installed in the inner cavity of the adsorption filter box 407 .

[0101] Specifically, when the water vapor absorption and filtering mechanism 4 is working, the power supply of the vacuum pump 404 is started to make the vacuum pump 404 work. At the same time, the gas formed after being dried by the annular electric heating shell 206 in the drying tower 1 can enter the suction box 401 through multiple suction heads 402 respectively. When the dried gas enters the corresponding suction head 402, it can also be subjected to the first-stage adsorption and filtration by the first-stage adsorption filter element in each suction head 402.

[0102] After the dried gas undergoes the first stage of adsorption filtration, under the action of the vacuum pump 404, the gas will enter the suction pipe 405 through the suction box 401 and the connector 4011, and then enter the gas delivery pipe 406 through the suction pipe 405 and the vacuum pump 404, and then enter the adsorption filter box 407 through the gas delivery pipe 406. After the gas undergoes the first stage of adsorption filtration enters the adsorption filter box 407, it will be subjected to the second stage of adsorption filtration by the second stage adsorption filter element.

[0103] The gas that has passed the second stage of adsorption filtration will be discharged to the outside through the exhaust pipe 408.

[0104] At the same time, each first-stage adsorption filter element can be removed from the corresponding suction head 402 to facilitate subsequent replacement.

[0105] In order to optimize the specific structure of the first-stage adsorption filter element, in the present embodiment, further, a plurality of first-stage adsorption filter elements each include an activated carbon honeycomb adsorption block 403 , and each activated carbon honeycomb adsorption block 403 is plugged and installed in a corresponding suction head 402 .

[0106] More specifically, each activated carbon honeycomb adsorption block 403 has a plurality of honeycomb holes.

[0107] The activated carbon honeycomb adsorption block 403 is a preferred form of the first-stage adsorption filter element. Each activated carbon honeycomb adsorption block 403 can perform the first-stage dry adsorption filtration on the desulfurization waste liquid gas.

[0108] In order to optimize the specific structure of the second-stage adsorption filter element, in the present embodiment, further, the second-stage adsorption filter element is a water-absorbing resin filter plate 409 , and the water-absorbing resin filter plate 409 is fixedly installed in the middle of the inner cavity of the adsorption filter box 407 .

[0109] More specifically, the water-absorbing resin filter plate 409 has a plurality of flow gaps.

[0110] The water-absorbent resin filter plate 409 is a preferred form of the second-stage adsorption filter element. The water-absorbent resin filter plate 409 has a high water absorption function of absorbing water that is several hundred to several thousand times heavier than itself, thereby better performing the second-stage dry adsorption filtration of the desulfurization waste liquid gas.

[0111] In summary, the workflow of the utility model is:

[0112] like Figure 1-10As shown, when the desulfurization waste liquid drying equipment is in use, the operator first closes the second valve 2012 and opens the first valve 2011, so that the waste liquid circulation back to the liquid pipe 207 forms a closed circuit, so that a flow path is formed between the waste liquid feeding pipe 202 and the waste liquid delivery pipe 203. At the same time, the power supply of the first pumping pump 204, the annular electric heating shell 206 and the water vapor absorption filter mechanism 4 is turned on. The first pumping pump 204 evenly pumps the desulfurization waste liquid in the waste liquid delivery pipe 203 into the tubular atomizing nozzle 205, and then the desulfurization waste liquid is sprayed outward in the form of atomization through the tubular atomizing nozzle 205. The atomized desulfurization waste liquid will contact the annular electric heating shell 206. Under the heating action of the annular electric heating shell 206, the sprayed desulfurization waste liquid will be evenly heated and dried.

[0113] When the desulfurized waste liquid falling from the annular electric heating shell 206 falls into the bottom of the inner cavity of the drying tower 1, the operator closes the first valve 2011 and opens the second valve 2012 to form a closed circuit between the waste liquid feeding pipe 202 and the waste liquid conveying pipe 203, and a flow path is formed between the waste liquid circulation return pipe 207 and the waste liquid conveying pipe 203. At this time, the power supply of the second pumping pump 208 is turned on at the same time to make the second pumping pump 208 work. The second pumping pump 208 can extract the desulfurized waste liquid at the bottom of the inner cavity of the drying tower 1 through the waste liquid circulation pumping pipe 209, and transport it to the waste liquid conveying pipe 203 through the waste liquid circulation return pipe 207, and then perform secondary circulation drying through the first pumping pump 204, the tubular atomizing nozzle 205 and the annular electric heating shell 206 to achieve the effect of concentration;

[0114] While the circulating desulfurization waste liquid drying mechanism 2 is working, the power supply of the lifting airflow generating component 3 is turned on again to make the lifting airflow generating component 3 work. When the lifting airflow generating component 3 is working, it can generate an upward lifting airflow at the bottom of the inner cavity of the drying tower 1. This upward lifting airflow can not only evenly distribute the heat generated by heating the annular electric heating shell 206 to various parts of the inner cavity of the drying tower 1 to accelerate the evaporation and drying process of the misty desulfurization waste liquid, but also can blow the falling misty desulfurization waste liquid upward, so that the misty desulfurization waste liquid in the falling process in the drying tower 1 can contact the annular electric heating shell 206 repeatedly and continuously, so as to improve the evaporation and drying effect of the desulfurization waste liquid;

[0115] The gas formed after drying in the drying tower 1 by the annular electric heating shell 206 can be sucked into the water vapor absorption filter mechanism 4 for secondary adsorption drying;

[0116] After use, the operator can remove the bolts on the upper cover plate 101, take out the first pump 204, the tubular atomizing nozzle 205 and the annular electric heating shell 206, and clean the dirt on the tubular atomizing nozzle 205 and the annular electric heating shell 206.

[0117] Specifically, when the motor 301 is working, it can drive the spiral fan blades 302 through its output shaft, so that the spiral fan blades 302 rotate at a high speed in the lower part of the inner cavity of the drying tower 1. When the spiral fan blades 302 rotate at a high speed, an upward airflow can be generated from bottom to top. The airflow can lift the atomized desulfurization waste liquid upward, and can also make the heat generated by the heating of the annular electric heating shell 206 evenly distributed in the inner cavity of the drying tower 1.

[0118] Specifically, the gas formed after drying by the annular electric heating shell 206 in the drying tower 1 can enter the suction box 401 through multiple suction heads 402 respectively. When the dried gas enters the corresponding suction head 402, it can also be subjected to the first-stage adsorption filtration by the first-stage adsorption filter element in each suction head 402.

[0119] After the dried gas undergoes the first stage of adsorption filtration, under the action of the vacuum pump 404, the gas will enter the suction pipe 405 through the suction box 401 and the connector 4011, and then enter the gas delivery pipe 406 through the suction pipe 405 and the vacuum pump 404, and then enter the adsorption filter box 407 through the gas delivery pipe 406. After the gas undergoes the first stage of adsorption filtration enters the adsorption filter box 407, it will be subjected to the second stage of adsorption filtration by the second stage adsorption filter element.

[0120] The gas that has passed the second stage of adsorption filtration will be discharged to the outside through the exhaust pipe 408.

[0121] At the same time, each first-stage adsorption filter element can be removed from the corresponding suction head 402 to facilitate subsequent replacement.

[0122] More specifically, the activated carbon honeycomb adsorption block 403 is the preferred form of the first-stage adsorption filter element. Each activated carbon honeycomb adsorption block 403 can perform the first-stage dry adsorption filtration on the desulfurization waste liquid gas. The water-absorbent resin filter plate 409 is the preferred form of the second-stage adsorption filter element. The water-absorbent resin filter plate 409 has a high water absorption function of absorbing water that is hundreds to thousands of times heavier than itself, thereby better performing the second-stage dry adsorption filtration on the desulfurization waste liquid gas.

[0123] The above different embodiments can be combined, replaced and used in conjunction with each other.

[0124] It should be noted that, in this article, relational terms such as first and second, etc. 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. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0125] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concentrated desulfurization waste liquid drying equipment, characterized in that: include: A drying tower (1), wherein the top and bottom of the drying tower (1) are respectively fastened with an upper cover plate (101) and a lower cover plate (102) by a plurality of bolts, and the upper and lower parts of the drying tower (1) respectively have a plurality of circumferentially distributed upper conical surface parts (103) and lower conical surface parts (104); A circulating desulfurization waste liquid drying mechanism (2), wherein the circulating desulfurization waste liquid drying mechanism (2) is installed on a drying tower (1); A lifting airflow generating component (3) is installed at the bottom of the inner cavity of the drying tower (1); The drying tower (1) is also equipped with a water vapor absorption and filtering mechanism (4).

2. A concentrated desulfurization waste liquid drying equipment according to claim 1, characterized in that: The circulating desulfurization waste liquid drying mechanism (2) comprises a three-way valve (201), the three-way valve (201) is in a horizontal T-shape, the top and bottom ends of the three-way valve (201) are both feed ends, and the middle end is both a discharge end, the top feed end of the three-way valve (201) is connected to a waste liquid feed pipe (202), and the middle discharge end of the three-way valve (201) is connected to a waste liquid conveying pipe (203); The circulating desulfurization waste liquid drying mechanism (2) further comprises a first material extraction pump (204), the first material extraction pump (204) being fixedly mounted on the upper cover plate (101), the discharge end of the first material extraction pump (204) penetrating downward from the upper cover plate (101) and extending into the inner cavity of the drying tower (1), the discharge end of the first material extraction pump (204) being connected to a tubular atomizing nozzle (205), an annular electric heating shell (206) being arranged outside the tubular atomizing nozzle (205), and a top end of the annular electric heating shell (206) being fixedly connected to the bottom of the upper cover plate (101); The waste liquid delivery pipe (203) is connected to the feed end of the first pumping pump (204) at one end away from the three-way valve (201); The circulating desulfurization waste liquid drying mechanism (2) further comprises a waste liquid circulating return pipe (207), one end of which is connected to the bottom feed end of the three-way valve (201); The circulating desulfurization waste liquid drying mechanism (2) further comprises a second pumping pump (208), the second pumping pump (208) being arranged on one side of the drying tower (1), the feed end of the second pumping pump (208) being connected to a waste liquid circulation pumping pipe (209), the waste liquid circulation pumping pipe (209) being connected to the bottom of the lower cone portion (104) at an end away from the second pumping pump (208), and the discharge end of the second pumping pump (208) being connected to the waste liquid circulation return pipe (207) at an end away from the three-way valve (201); The tubular atomizing nozzle (205) has a plurality of spray holes on its side wall, and one end of its bottom is closed; The side wall of the annular electric heating shell (206) is provided with a plurality of microholes.

3. A concentrated desulfurization waste liquid drying equipment according to claim 2, characterized in that: A first valve (2011) is fixedly installed on the top feed end of the three-way valve (201), and a second valve (2012) is fixedly installed on the bottom feed end of the three-way valve (201).

4. A concentrated desulfurization waste liquid drying equipment according to claim 2, characterized in that: An upper assembly hole (1011) is provided at the center of the upper cover plate (101), and a discharge end of the first material pump (204) passes downward through the upper assembly hole (1011); A suction hole (1041) is provided at the bottom edge of one of the lower conical surface portions (104), and the waste liquid circulation suction pipe (209) is fixedly mounted on the suction hole (1041) at one end away from the second suction pump (208).

5. The concentrated desulfurization waste liquid drying equipment according to claim 1 is characterized in that: The lifting airflow generating component (3) comprises a motor (301), the motor (301) being fixedly mounted on the bottom of the lower cover plate (102), and the output shaft of the motor (301) passing upward from the lower cover plate (102) and extending into the inner cavity of the drying tower (1), and a spiral fan blade (302) being fixedly mounted on the output shaft of the motor (301).

6. The concentrated desulfurization waste liquid drying equipment according to claim 1 is characterized in that: A plurality of absorption slots (105) are provided on one side wall of the drying tower (1) from top to bottom; The water vapor absorption filter mechanism (4) comprises a suction box (401), on which a plurality of suction heads (402) matching the absorption slots (105) are fixedly mounted, the inner cavity of each suction head (402) being connected to the inner cavity of the suction box (401), and a first-stage adsorption filter element is detachably mounted in each suction head (402); Each of the suction heads (402) is plugged and installed in a corresponding absorption slot (105); The suction box (401) has a connecting head (4011) on a side away from the suction head (402), and the connecting head (4011) is connected to the inner cavity of the suction box (401); The water vapor absorption and filtering mechanism (4) further comprises a vacuum pump (404); a feeding end of the vacuum pump (404) is connected to an air extraction pipe (405); an end of the air extraction pipe (405) away from the vacuum pump (404) is plugged and installed in a connector (4011); and a discharge end of the vacuum pump (404) is connected to an air delivery pipe (406); The water vapor absorption filter mechanism (4) further comprises an adsorption filter box (407); the air supply pipe (406) is connected to the bottom of the adsorption filter box (407) at one end away from the vacuum pump (404); and the top of the adsorption filter box (407) is connected to an exhaust pipe (408); A second-stage adsorption filter element is installed in the inner cavity of the adsorption filter box (407).

7. A concentrated desulfurization waste liquid drying equipment according to claim 6, characterized in that: The plurality of first-stage adsorption filter elements all comprise an activated carbon honeycomb adsorption block (403), and each of the activated carbon honeycomb adsorption blocks (403) is plugged and installed in a corresponding suction head (402).

8. The concentrated desulfurization waste liquid drying equipment according to claim 7 is characterized in that: Each of the activated carbon honeycomb adsorption blocks (403) has a plurality of honeycomb holes.

9. The concentrated desulfurization waste liquid drying equipment according to claim 6 is characterized in that: The second-stage adsorption filter element is a water-absorbing resin filter plate (409), and the water-absorbing resin filter plate (409) is fixedly mounted in the middle of the inner cavity of the adsorption filter box (407).

10. A concentrated desulfurization waste liquid drying equipment according to claim 9, characterized in that: The water-absorbing resin filter plate (409) has a plurality of flow gaps.

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