A dust removal and dechlorination pretreatment device for blast furnace gas purification and desulfurization system

Abstract

The invention discloses a dust removal and dechlorination pretreatment device for a blast furnace gas purification and desulfurization system, which relates to the technical field of blast furnace gas purification and desulfurization, and comprises a treatment mechanism, wherein the buffer mechanism comprises a first multi-way pipe and a protective shell, a pressure sensor is installed on the outer wall of one of the input ends of the second multi-way pipe, one of the output ends of the second multi-way pipe and the input end of the one-way valve are both installed with a first electric valve, a gas storage box is fixed inside the steel cage, and a second electric valve is installed at the discharge end of the round pipe; the present invention, by arranging the buffer mechanism, can disperse part of the blast furnace gas into the gas storage box for storage when the amount of blast furnace gas generated is greater than the processing capacity of the dust removal and dechlorination pretreatment device, so as to ensure that the dust removal and dechlorination pretreatment device will not be subjected to pressure shock, thereby ensuring the stable operation of the dust removal and dechlorination pretreatment device, and then ensuring the dechlorination effect of the dust removal and dechlorination pretreatment device, that is, improving the use efficiency of the dust removal and dechlorination pretreatment device.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace gas purification and desulfurization, in particular to a dust removal and dechlorination pretreatment device for a blast furnace gas purification and desulfurization system. Background Art

[0002] Blast furnace gas is a combustible gas produced as a by-product of the blast furnace ironmaking process. During the blast furnace ironmaking process, workers generally remove dust from the blast furnace gas, use a purification and desulfurization system to desulfurize it, and then recycle it. However, the blast furnace gas produced by blast furnace ironmaking may also contain chlorides. At this time, if the chlorides in the blast furnace gas are not treated first and purification and desulfurization are carried out directly, the chlorides in the blast furnace gas will react with the desulfurizer, thereby affecting the properties and structure of the desulfurizer, and then affecting the desulfurization effect of the blast furnace gas. Therefore, before using the purification and desulfurization system for the blast furnace gas, a dust removal and dechlorination pretreatment device is required.

[0003] In the existing technology, the existing dust removal and dechlorination pretreatment device of the blast furnace gas purification and desulfurization system can dechlorinate the blast furnace gas during actual use to ensure the desulfurization effect of the subsequent purification and desulfurization system, but it does not have a buffering function. When the amount of blast furnace gas generated is greater than the processing capacity of the dust removal and dechlorination pretreatment device, the dust removal and dechlorination pretreatment device without a buffering function will not be able to prevent the internal pressure of the pipeline for transporting blast furnace gas from gradually increasing, and the gradually increasing pressure inside the pipeline will cause a pressure shock to the dust removal and dechlorination pretreatment device, thereby affecting the stable operation of the dust removal and dechlorination pretreatment device, and then affecting the dechlorination effect of the dust removal and dechlorination pretreatment device, that is, it will reduce the use efficiency of the dust removal and dechlorination pretreatment device, resulting in poor dechlorination effect, and fail to protect the desulfurization system.

[0004] Therefore, we propose a dust removal and dechlorination pretreatment device for a blast furnace gas purification and desulfurization system in order to solve the problems raised in the above background technology. Summary of the invention

[0005] The object of the present invention is to provide a dust removal and dechlorination pretreatment device for a blast furnace gas purification and desulfurization system, so as to solve the problem that the existing dust removal and dechlorination pretreatment device for the blast furnace gas purification and desulfurization system does not have a buffering function. When the amount of blast furnace gas generated is greater than the processing capacity of the dust removal and dechlorination pretreatment device, the dust removal and dechlorination pretreatment device without a buffering function will be unable to prevent the internal pressure of the pipeline for transporting blast furnace gas from gradually increasing, and the gradually increasing pressure inside the pipeline will cause a pressure shock to the dust removal and dechlorination pretreatment device, thereby affecting the stable operation of the dust removal and dechlorination pretreatment device, and then affecting the dechlorination effect of the dust removal and dechlorination pretreatment device, that is, reducing the use efficiency of the dust removal and dechlorination pretreatment device.

[0006] To achieve the above object, the present invention provides the following technical solution: a blast furnace gas purification and desulfurization system dust removal and dechlorination pretreatment device, comprising a treatment mechanism, wherein a buffer mechanism is provided on the treatment mechanism;

[0007] The buffer mechanism includes a first multi-way tube and a protective shell, an arc tube is installed at the output end of the first multi-way tube, a second multi-way tube is installed at one of the input ends of the first multi-way tube, a pressure sensor is installed on the outer wall of one of the input ends of the second multi-way tube, a one-way valve is installed at the other input end of the first multi-way tube, a first electric valve is installed at one of the output ends of the second multi-way tube and the input end of the one-way valve, a delivery pipe is installed at one of the input ends of the first electric valves, a shell cover is fixed to the top of the protective shell, a steel cage is fixed to the inside of the protective shell, an air storage box is fixed to the inside of the steel cage, a filter plate is fixed to the inside of the air storage box, a guide hole is opened on the upper side of the inner wall of the air storage box, a round tube is fixed to the bottom of the air storage box, a second electric valve is installed at the discharge end of the round tube, a vibrator is installed at the bottom of the air storage box, and an auxiliary hole is opened at the bottom of the inner wall of the protective shell.

[0008] Preferably, the detection end of the pressure sensor extends to the inside of one of the input ends of the second multi-channel tube, the air inlet end of the air storage box moves through the front surface of the inner wall of the protective shell, and the air outlet end of the air storage box moves through the inner wall of the protective shell.

[0009] Preferably, the interior of the circular tube is connected to the interior of the guide hole, the vibrator is movably sleeved inside the auxiliary hole, the bottom end of the circular tube movably passes through the bottom of the inner wall of the protective shell, the output end of the other first electric valve is installed with the input end of the air storage box, and the input end of the delivery pipe is installed with the output end of the air storage box.

[0010] Preferably, the processing mechanism includes a placement table, the first multi-way pipe is at the top of the placement table, the protective shell is installed on the top of the placement table, a fan, a plate heat exchanger, a bag dust collector and a separator are installed on the top of the placement table, the input end of the fan is installed with the output end of the arc tube, and the input end and the output end of the plate heat exchanger are both installed with a first connecting pipe.

[0011] Preferably, the input end of one of the first connecting tubes is installed with the output end of the fan, and the output end of the other first connecting tube is installed with the input end of the bag-type dust collector. An operating table shell is placed on the top of the placing table, and a controller is installed on the operating table shell. A second connecting tube is installed at the output end of the bag-type dust collector, and a three-way pipe is installed at the output end of the second connecting tube.

[0012] Preferably, a processing box is installed on the top of the placement table, and the two output ends of the three-way pipe are fixed through the outer wall of the processing box. A liquid storage tank is fixed on the top of the processing box, and the two output ends of the liquid storage tank are installed with a first connecting pipe. Two centrifugal pumps are installed on the top of the processing box, and the input ends of the two centrifugal pumps are respectively installed with the output ends of the two first connecting pipes, and a four-way pipe is fixedly passed through the top of the processing box.

[0013] Preferably, a sealing plate is installed on the front surface of the processing box, four motors are installed on the top of the processing box, atomizing nozzles are installed on both output ends of the four-way pipe, second connecting pipes are installed on both input ends of the four-way pipe, and electric regulating valves are installed on the input ends of the two second connecting pipes.

[0014] Preferably, the output ends of the two centrifugal pumps are respectively installed with the input ends of the two electric regulating valves, and four rotating rods are rotatably embedded in the top of the inner wall of the processing box. The top end of each rotating rod can move through the top of the inner wall of the processing box, and the top end of each rotating rod is respectively installed with the output end of each motor.

[0015] Preferably, two porous plates are fixed on the outer surface of each rotating rod, two top groove plates and two bottom groove plates are fixed inside the processing box, the two top groove plates and the two bottom groove plates are arranged in an alternating manner, and a rectangular hole is opened on the top of the placing table, and the interior of the rectangular hole is connected to the interior of the auxiliary hole.

[0016] Preferably, the circular tube and the second electric valve are movably sleeved inside the rectangular hole, the pressure sensor, the two first electric valves, the second electric valve and the vibrator are electrically connected to the controller, and the fan, the two centrifugal pumps, the four motors and the two electric regulating valves are electrically connected to the controller.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention, by arranging a buffer mechanism, can disperse part of the blast furnace gas into the gas storage box for storage when the amount of blast furnace gas generated is greater than the processing capacity of the dust removal and dechlorination pretreatment device, so as to ensure that the dust removal and dechlorination pretreatment device will not be subjected to pressure shock, thereby ensuring the stable operation of the dust removal and dechlorination pretreatment device. When the pressure data received by the controller is higher than the pressure threshold value set in advance by the controller, at this time, the cooperation of the controller and another first electric valve can be used to disperse and transport part of the blast furnace gas entering the second multi-way pipe to the gas storage box for storage, and then the cooperation of the gas storage box, the steel cage, the protective shell and the shell cover can be used to disperse the heat carried by the blast furnace gas entering the gas storage box into the environment, and then the cooperation of the filter plate can be used to make the blast furnace gas entering the conveying pipe dust-free.

[0019] 2. In the present invention, when the controller again receives pressure data that is lower than the pressure previously set by the controller, the cooperation between the controller and another first electric valve can be used to prevent the blast furnace gas inside the second multi-way pipe from entering the interior of the gas storage box. When the iron-making furnace completes the iron-making operation and no blast furnace gas enters the interior of the second multi-way pipe, the cooperation between the controller, the one-way valve, one of the first electric valves and the delivery pipe can be used to allow the blast furnace gas inside the gas storage box to enter the interior of the first multi-way pipe. Subsequently, the cooperation between the first multi-way pipe and the arc pipe can be used to allow the blast furnace gas to enter the processing mechanism for subsequent processing operations.

[0020] 3. In the present invention, when the blast furnace gas inside the gas storage box is processed and the dust inside the gas storage box needs to be cleaned, the dust attached to the surface of the filter plate and the inner wall of the gas storage box can be vibrated and dropped into the guide hole by the cooperation of the controller and the vibrator. Then, the dust entering the guide hole can be guided away by the cooperation of the guide hole, the controller, the round tube and the second electric valve.

[0021] 4. The present invention can cool, dedust and dechlorinate blast furnace gas by setting a processing mechanism, and separate the reaction products after dechlorination of blast furnace gas from blast furnace gas. When blast furnace gas enters the interior of the plate heat exchanger through the cooperation of the blower and the first connecting pipe connected to the input end of the plate heat exchanger, the blast furnace gas can be cooled by the cooperation of the plate heat exchanger.

[0022] 5. The present invention utilizes the cooperation of the plate heat exchanger and the first connecting pipe connected to the output end of the plate heat exchanger to allow the cooled blast furnace gas to enter the interior of the bag-type dust collector, and then utilizes the cooperation of the bag-type dust collector to remove dust from the blast furnace gas, and then utilizes the cooperation of the second connecting pipe and the three-way pipe to allow the dust-removed blast furnace gas to enter the interior of the treatment box, and then utilizes the cooperation of the controller, the centrifugal pump, the first connecting pipe, the electric regulating valve, the second connecting pipe, the four-way pipe and the atomizing nozzle to extract the dechlorinating agent liquid in the liquid storage tank and spray it into the interior of the treatment box in an atomized manner.

[0023] 6. The present invention utilizes the cooperation of a controller, a motor, a rotating rod, a porous plate, a top slot plate and a bottom slot plate to achieve full mixing of the blast furnace gas with the atomized dechlorinating agent and reduce the speed at which the blast furnace gas reaches the gas outlet inlet of the treatment box, thereby achieving efficient dechlorination of the blast furnace gas. Finally, the separator is used to separate the products generated by the dechlorination reaction of the blast furnace gas from the blast furnace gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1A three-dimensional diagram of a dust removal and dechlorination pretreatment device for a blast furnace gas purification and desulfurization system according to the present invention;

[0025] Figure 2 A top-down perspective view of a dust removal and dechlorination pretreatment device for a blast furnace gas purification and desulfurization system according to the present invention;

[0026] Figure 3 It is a schematic diagram of a partial cross-sectional structure of a dust removal and dechlorination pretreatment device of a blast furnace gas purification and desulfurization system according to the present invention, viewed from an upward angle;

[0027] Figure 4 A three-dimensional view from another angle of a dust removal and dechlorination pretreatment device of a blast furnace gas purification and desulfurization system of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of a dust removal and dechlorination pretreatment device of a blast furnace gas purification and desulfurization system according to the present invention from a front view;

[0029] Figure 6 It is a partial three-dimensional diagram of a buffer mechanism of a dust removal and dechlorination pretreatment device of a blast furnace gas purification and desulfurization system of the present invention;

[0030] Figure 7 It is a three-dimensional diagram of a treatment mechanism portion of a dust removal and dechlorination pretreatment device for a blast furnace gas purification and desulfurization system of the present invention;

[0031] Figure 8 It is a partially cutaway stereoscopic view of a buffer mechanism of a dust removal and dechlorination pretreatment device of a blast furnace gas purification and desulfurization system according to the present invention.

[0032] In the figure: 1, treatment mechanism; 101, placement table; 102, fan; 103, plate heat exchanger; 104, first connecting pipe; 105, operating table shell; 106, controller; 107, bag filter; 108, second connecting pipe; 109, three-way pipe; 110, treatment box; 111, liquid storage tank; 112, first connecting pipe; 113, centrifugal pump; 114, four-way pipe; 115, sealing plate; 116, motor; 117, atomizing nozzle; 118, rotating rod; 119, porous plate; 120, separator; 121, top groove plate ; 122, bottom trough plate; 123, rectangular hole; 124, electric regulating valve; 125, second connecting pipe; 2, buffer mechanism; 201, first multi-way pipe; 202, arc pipe; 203, second multi-way pipe; 204, pressure sensor; 205, one-way valve; 206, first electric valve; 207, delivery pipe; 208, protective shell; 209, shell cover; 210, steel cage; 211, air storage box; 212, filter plate; 213, guide hole; 214, round pipe; 215, second electric valve; 216, vibrator; 217, auxiliary hole. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 8 As shown, the present invention provides a technical solution: a dust removal and dechlorination pretreatment device for a blast furnace gas purification and desulfurization system, comprising a treatment mechanism 1, on which a buffer mechanism 2 is provided;

[0035] The buffer mechanism 2 includes a first multi-channel tube 201 and a protective shell 208. The output end of the first multi-channel tube 201 is installed with an arc tube 202. One of the input ends of the first multi-channel tube 201 is installed with a second multi-channel tube 203. The outer wall of one of the input ends of the second multi-channel tube 203 is installed with a pressure sensor 204. Another input end of the first multi-channel tube 201 is installed with a check valve 205. One of the output ends of the second multi-channel tube 203 and the input end of the check valve 205 are both installed with a first electric valve 206. One of the input ends of the first electric valve 206 is installed with a pressure sensor 204. A conveying pipe 207 is installed, a shell cover 209 is fixed on the top of the protective shell 208, a steel cage 210 is fixed inside the protective shell 208, an air storage box 211 is fixed inside the steel cage 210, a filter plate 212 is fixed inside the air storage box 211, a guide hole 213 is opened on the upper side of the inner wall of the air storage box 211, a round tube 214 is fixed on the bottom of the air storage box 211, a second electric valve 215 is installed at the discharge end of the round tube 214, a vibrator 216 is installed at the bottom of the air storage box 211, and an auxiliary hole 217 is opened on the bottom of the inner wall of the protective shell 208.

[0036] according to Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 8 As shown, the detection end of the pressure sensor 204 extends to the inside of one of the input ends of the second multi-channel tube 203, the air inlet end of the air storage box 211 movably penetrates the inner wall surface of the protective shell 208, and the air outlet end of the air storage box 211 movably penetrates the inner wall of the protective shell 208, so that the air storage box 211 can be protected with the cooperation of the protective shell 208, the shell cover 209 and the steel cage 210.

[0037] according to Figure 1-Figure 4 , Figure 6 and Figure 8As shown, the interior of the circular tube 214 is connected to the interior of the guide hole 213, the vibrator 216 is movably sleeved inside the auxiliary hole 217, the bottom end of the circular tube 214 movably passes through the bottom of the inner wall of the protective shell 208, the output end of the other first electric valve 206 is installed with the input end of the gas storage box 211, and the input end of the delivery pipe 207 is installed with the output end of the gas storage box 211. Under the action of the gas storage box 211, the blast furnace gas delivered by the other first electric valve 206 can be stored.

[0038] according to Figure 1-Figure 4 and Figure 8 As shown, the processing mechanism 1 includes a placement table 101, a first multi-channel pipe 201 is located at the top of the placement table 101, a protective shell 208 is installed on the top of the placement table 101, and a fan 102, a plate heat exchanger 103, a bag-type dust collector 107 and a separator 120 are installed on the top of the placement table 101. The input end of the fan 102 is installed with the output end of the arc tube 202, and the input end of the plate heat exchanger 103 and the output end of the plate heat exchanger 103 are both installed with a first connecting pipe 104, so that the fan 102, the plate heat exchanger 103 and the bag-type dust collector 107 can be connected together under the action of the two first connecting pipes 104.

[0039] according to Figure 1-Figure 5 and Figure 7 As shown, the input end of one of the first connecting pipes 104 is installed with the output end of the fan 102, and the output end of the other first connecting pipe 104 is installed with the input end of the bag-type dust collector 107. An operating table shell 105 is placed on the top of the placement table 101, and a controller 106 is installed on the operating table shell 105. A second connecting pipe 108 is installed at the output end of the bag-type dust collector 107, and a three-way pipe 109 is installed at the output end of the second connecting pipe 108, so that the blast furnace gas transported from the second connecting pipe 108 can be evenly dispersed into the interior of the processing box 110 under the action of the three-way pipe 109.

[0040] according to Figure 1-Figure 5 and Figure 7 As shown, a treatment box 110 is installed on the top of the placement table 101, and the two output ends of the three-way pipe 109 are fixedly passed through the outer wall of the treatment box 110. A liquid storage tank 111 is fixed on the top of the treatment box 110, and the two output ends of the liquid storage tank 111 are installed with first connecting pipes 112. Two centrifugal pumps 113 are installed on the top of the treatment box 110, and the input ends of the two centrifugal pumps 113 are respectively installed with the output ends of the two first connecting pipes 112. A four-way pipe 114 is fixedly passed through the top of the treatment box 110, and under the action of the four-way pipe 114, the dechlorination agent liquid transported by the two second connecting pipes 125 can be collected and diverted to the inside of the two atomizing nozzles 117.

[0041] according to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, a sealing plate 115 is installed on the front surface of the processing box 110, four motors 116 are installed on the top of the processing box 110, atomizing nozzles 117 are installed at both output ends of the four-way pipe 114, second connecting pipes 125 are installed at both input ends of the four-way pipe 114, and electric regulating valves 124 are installed at the input ends of the two second connecting pipes 125, so that the amount of dechlorination agent liquid entering the corresponding second connecting pipe 125 each time can be controlled under the action of the electric regulating valve 124.

[0042] according to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, the output ends of the two centrifugal pumps 113 are respectively installed with the input ends of the two electric regulating valves 124, and four rotating rods 118 are rotatably embedded in the top of the inner wall of the processing box 110. The top end of each rotating rod 118 is movable through the top of the inner wall of the processing box 110, and the top end of each rotating rod 118 is respectively installed with the output end of each motor 116. With the cooperation of the motor 116 and the rotating rod 118, the corresponding two porous plates 119 can be driven to rotate.

[0043] according to Figure 1-Figure 5 and Figure 7 As shown, two porous plates 119 are fixed to the outer surface of each rotating rod 118, and two top groove plates 121 and two bottom groove plates 122 are fixed inside the processing box 110. The two top groove plates 121 and the two bottom groove plates 122 are arranged in a staggered manner. A rectangular hole 123 is opened on the top of the placement table 101. The interior of the rectangular hole 123 is connected to the interior of the auxiliary hole 217. With the cooperation of the auxiliary hole 217 and the rectangular hole 123, the staff can conveniently perform maintenance operations on the vibrator 216 and the second electric valve 215.

[0044] according to Figure 1-Figure 8 As shown, the circular tube 214 and the second electric valve 215 are movably sleeved inside the rectangular hole 123, the pressure sensor 204, the two first electric valves 206, the second electric valve 215 and the vibrator 216 are electrically connected to the controller 106, the fan 102, the two centrifugal pumps 113, the four motors 116 and the two electric regulating valves 124 are electrically connected to the controller 106, so that under the action of the controller 106, it is convenient to control whether the components electrically connected thereto are opened or closed.

[0045] The effect achieved by the entire mechanism is: when it is necessary to use the dust removal and dechlorination pretreatment device, first connect the input end of the second multi-way pipe 203 to the top outlet of the ironmaking furnace with a pipeline, then connect the gas outlet end of the separator 120 to the gas inlet end of the purification and desulfurization system, and then connect the controller 106 to the external power supply through the prepared power cord, then turn on the controller 106, set the use program, the amount of liquid flowing through each time in the two electric regulating valves 124 and the pressure threshold (determined according to actual conditions), then connect the plate heat exchanger 103 and the bag dust collector 107 to the external power supply, then use the controller 106 to open the pressure sensor 204, and finally connect the controller 106 to the ironmaking furnace control console. The two parts are connected together with a wire, and the sealing plate 115 is removed at the same time. An appropriate amount of catalyst (dechlorination catalyst) is placed at the bottom of the inner wall of the treatment box 110, and the sealing plate 115 is installed back to its original position after the catalyst placement operation is completed. When everything is ready, the controller 106 is used to open the fan 102, two electric regulating valves 124, four motors 116 and two centrifugal pumps 113, and the plate heat exchanger 103 and the bag filter 107 are started at the same time. Then, the ironmaking operation is directly carried out. At this time, the blast furnace gas generated by the ironmaking will be directly transported to the inside of the second multi-way pipe 203 through the pipeline connected thereto. When the blast furnace gas enters the inside of the second multi-way pipe 203, the pressure sensor 204 will perform a pressure measurement on the input end of the second multi-way pipe 203. The pressure at the inlet is detected, and the detected pressure data is directly transmitted to the controller 106 in the form of an electrical signal. Then the controller 106 compares the received pressure data with the pressure threshold value set in advance by the controller 106. When the pressure data received by the controller 106 is lower than the pressure threshold value set in advance by the controller 106, the controller 106 will keep the two first electric valves 206 in a closed state. At this time, the blast furnace gas transported to the inside of the second multi-way pipe 203 will be transported to the inside of the first connecting pipe 104 connected to the input end of the plate heat exchanger 103 under the cooperation of the first multi-way pipe 201, the started fan 102 and the arc pipe 202, and then transported to the inside of the started plate heat exchanger 103, and then in the started Under the action of the plate heat exchanger 103, the temperature is lowered, and then the cooled blast furnace gas is transported to the inside of the bag dust collector 107 with the cooperation of the first connecting pipe 104 connected to the output end of the plate heat exchanger 103. When the blast furnace gas enters the inside of the bag dust collector 107, the bag dust collector 107 started at this time will filter out the dust in the blast furnace gas, and then the blast furnace gas with dust removed will enter the inside of the second connecting pipe 108, and then enter the inside of the three-way pipe 109, and then enter the inside of the processing box 110. At the same time, the two started centrifugal pumps 113 will extract the dechlorinating agent liquid in the liquid storage tank 111 (with an appropriate amount of dechlorinating agent pre-loaded inside) with the cooperation of the first connecting pipe 112 connected thereto.And it is transported to the inside of the corresponding opened electric regulating valve 124, and then transported to the inside of the four-way pipe 114 through the cooperation of the corresponding second connecting pipe 125, and then it is diverted and transported to the inside of the two atomizing nozzles 117, and then sprayed to the inside of the treatment box 110. At the same time, each motor 116 that is started will also drive the corresponding two porous plates 119 to rotate with the cooperation of the rotating rod 118 connected thereto. When the blast furnace gas and the atomized dechlorinating agent both reach the inside of the treatment box 110 and the multiple porous plates 119 rotate, the blast furnace gas will be fully mixed with the atomized dechlorinating agent at this time. At the same time, under the action of the dechlorination catalyst, the dechlorination effect of the blast furnace gas can be improved. At the same time, the two top groove plates 121 and With the cooperation of the two bottom trough plates 122, the speed at which the blast furnace gas reaches the inlet of the gas outlet end of the processing box 110 can be reduced, that is, the blast furnace gas can be efficiently dechlorinated, and then the dechlorinated blast furnace gas will enter the interior of the separator 120 and enter the separation operation. Then, the blast furnace gas that has been cooled, dusted, dechlorinated and separated from the reaction products will enter the purification and desulfurization system and perform the next step. When the pressure data received by the controller 106 is higher than the pressure threshold value set in advance by the controller 106, the controller 106 will open another first electric valve 206. At this time, part of the blast furnace gas that has entered the interior of the second multi-way pipe 203 will enter the interior of the other opened first electric valve 206, and most of the blast furnace gas will continue the above-mentioned operation steps. Step, cooling, dust removal and dechlorination treatment are carried out, and then it enters the interior of the gas storage box 211. Then, part of the blast furnace gas entering the gas storage box 211 will pass through the filter plate 212 first, and then enter the interior of the delivery pipe 207 through the gas outlet end of the gas storage box 211. At the same time, the controller 106 will also transmit the comparison result to the control console of the ironmaking furnace to remind the staff to adjust the raw material supply and furnace condition. When the blast furnace gas passes through the filter plate 212, the dust carried by the blast furnace gas will be filtered out. At the same time, the heat carried by the blast furnace gas entering the gas storage box 211 will first be transferred to the inner wall of the gas storage box 211, and then to the steel cage 210, and then to the protective shell 208 and the shell cover 209, and then dispersed into the environment. When the control When the pressure data received by the controller 106 is lower than the pressure previously set by the controller 106 again, the controller 106 will close the other first electric valve 206, that is, to prevent the pressure from gradually increasing and causing pressure shock to the blast furnace gas dust removal and dechlorination pretreatment device, thereby ensuring the stable operation of the blast furnace gas dust removal and dechlorination pretreatment device. When the ironmaking furnace completes the ironmaking operation and no blast furnace gas enters the interior of the second multi-way pipe 203, one of the first electric valves 206 is opened. At this time, the filtered blast furnace gas in the gas storage box 211 will be transported to the interior of the first multi-way pipe 201 through the cooperation of the delivery pipe 207, the opened one of the first electric valves 206 and the one-way valve 205, and then the above-mentioned operation steps are repeated until the dechlorination operation is completed.And discharged from the output end of the separator 120, into the purification and desulfurization system, when the blast furnace gas inside the gas storage box 211 is processed, at this time, the controller 106 is used to close one of the first electric valves 206, the fan 102, the two centrifugal pumps 113, the four motors 116, and the two electric regulating valves 124, and then the plate heat exchanger 103 and the bag filter 107 are closed, and then the controller 106 is used to open the second electric valve 215 and the vibrator 216, and then the activated vibrator 216 will vibrate the dust attached to the surface of the filter plate 212 and the inner wall of the gas storage box 211 and fall into the guide hole 213, and then the dust falling into the guide hole 213 will enter the inside of the circular tube 214, and then enter the inside of the opened second electric valve 215, and then be discharged from the output end outlet of the second electric valve 215.

[0046] Among them, according to Figure 5 As shown, the four rotating rods 118 are respectively the first rotating rod 118, the second rotating rod 118, the third rotating rod 118 and the fourth rotating rod 118 from left to right. The first rotating rod 118 is located between one side of the inner wall of the processing box 110 and one side of one of the bottom slot plates 122, the second rotating rod 118 is located between the other side of one of the bottom slot plates 122 and one side of one of the top slot plates 121, the third rotating rod 118 is located between the other side of one of the top slot plates 121 and one side of another bottom slot plate 122, and the fourth rotating rod 118 is located between the other side of another bottom slot plate 122 and one side of another top slot plate 121;

[0047] The two output ends of the three-way pipe 109 and the two atomizing nozzles 117 are located between one side of the inner wall of the processing box 110 and one side of one of the bottom groove plates 122 .

[0048] Among them, the fan 102, the plate heat exchanger 103 (fan type), the controller 106 (PLC controller), the bag dust collector 107, the centrifugal pump 113, the motor 116, the atomizing nozzle 117, the separator 120 (mainly used to separate the products produced after the dechlorination treatment of blast furnace gas from the blast furnace gas), the electric regulating valve 124, the pressure sensor 204, the one-way valve 205, the first electric valve 206, the second electric valve 215 and the vibrator 216 are all existing technologies, and their working principles are all public technologies. Their models can be selected according to actual conditions, and no excessive explanation is given here.

[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dust removal and dechlorination pretreatment device for blast furnace gas purification and desulfurization system, characterized in that: It comprises a processing mechanism (1), wherein a buffer mechanism (2) is provided on the processing mechanism (1); The buffer mechanism (2) comprises a first multi-way tube (201) and a protective shell (208); an arc tube (202) is installed at the output end of the first multi-way tube (201); a second multi-way tube (203) is installed at one of the input ends of the first multi-way tube (201); a pressure sensor (204) is installed on the outer wall of one of the input ends of the second multi-way tube (203); a check valve (205) is installed at the other input end of the first multi-way tube (201); a first electric valve (206) is installed at one of the output ends of the second multi-way tube (203) and the input end of the check valve (205); and a delivery pipe (206) is installed at one of the input ends of the first electric valve (206). (207), a shell cover (209) is fixed on the top of the protective shell (208), a steel cage (210) is fixed inside the protective shell (208), an air storage box (211) is fixed inside the steel cage (210), a filter plate (212) is fixed inside the air storage box (211), a flow guide hole (213) is opened on the upper side of the inner wall of the air storage box (211), a round tube (214) is fixed on the bottom of the air storage box (211), a second electric valve (215) is installed at the discharge end of the round tube (214), a vibrator (216) is installed at the bottom of the air storage box (211), and an auxiliary hole (217) is opened on the bottom of the inner wall of the protective shell (208); The detection end of the pressure sensor (204) extends to the inside of one of the input ends of the second multi-channel tube (203), the air inlet end of the air storage box (211) movably penetrates the inner wall front surface of the protective shell (208), and the air outlet end of the air storage box (211) movably penetrates the inner wall of the protective shell (208); The interior of the circular tube (214) is connected to the interior of the guide hole (213); the vibrator (216) is movably sleeved inside the auxiliary hole (217); the bottom end of the circular tube (214) movably penetrates the bottom of the inner wall of the protective shell (208); the output end of the first electric valve (206) is mounted on the input end of the air storage box (211); and the input end of the delivery pipe (207) is mounted on the output end of the air storage box (211); The processing mechanism (1) comprises a placement table (101), the first multi-channel pipe (201) is located on the top of the placement table (101), the protective shell (208) is installed on the top of the placement table (101), and a fan (102), a plate heat exchanger (103), a bag filter (107) and a separator (120) are installed on the top of the placement table (101), the input end of the fan (102) is installed with the output end of the arc tube (202), and the input end of the plate heat exchanger (103) and the output end of the plate heat exchanger (103) are both installed with a first connecting pipe (104); The input end of one of the first connecting pipes (104) is installed with the output end of the fan (102), and the output end of the other first connecting pipe (104) is installed with the input end of the bag dust collector (107). An operating table shell (105) is placed on the top of the placement table (101), and a controller (106) is installed on the operating table shell (105). The output end of the bag dust collector (107) is installed with a second connecting pipe (108), and the output end of the second connecting pipe (108) is installed with a three-way pipe (109).

2. The dust removal and dechlorination pretreatment device for blast furnace gas purification and desulfurization system according to claim 1 is characterized in that: A processing box (110) is installed on the top of the placement table (101); both output ends of the three-way pipe (109) are fixedly passed through the outer wall of the processing box (110); a liquid storage tank (111) is fixedly installed on the top of the processing box (110); both output ends of the liquid storage tank (111) are installed with first connecting pipes (112); two centrifugal pumps (113) are installed on the top of the processing box (110); the input ends of the two centrifugal pumps (113) are respectively installed with the output ends of the two first connecting pipes (112); and a four-way pipe (114) is fixedly passed through the top of the processing box (110).

3. The dust removal and dechlorination pretreatment device for blast furnace gas purification and desulfurization system according to claim 2 is characterized in that: A sealing plate (115) is installed on the front surface of the processing box (110), four motors (116) are installed on the top of the processing box (110), atomizing nozzles (117) are installed at both output ends of the four-way pipe (114), second connecting pipes (125) are installed at both input ends of the four-way pipe (114), and electric regulating valves (124) are installed at the input ends of the two second connecting pipes (125).

4. The dust removal and dechlorination pretreatment device for blast furnace gas purification and desulfurization system according to claim 3 is characterized in that: The output ends of the two centrifugal pumps (113) are respectively mounted on the input ends of the two electric regulating valves (124); four rotating rods (118) are rotatably embedded in the top of the inner wall of the processing box (110); the top end of each rotating rod (118) movably penetrates the top of the inner wall of the processing box (110); and the top end of each rotating rod (118) is respectively mounted on the output end of each motor (116).

5. The dust removal and dechlorination pretreatment device for blast furnace gas purification and desulfurization system according to claim 4 is characterized in that: Two porous plates (119) are fixed on the outer surface of each rotating rod (118); two top groove plates (121) and two bottom groove plates (122) are fixed inside the processing box (110); the two top groove plates (121) and the two bottom groove plates (122) are arranged in a staggered manner; a rectangular hole (123) is opened on the top of the placement table (101); the interior of the rectangular hole (123) is connected to the interior of the auxiliary hole (217).

6. The dust removal and dechlorination pretreatment device for blast furnace gas purification and desulfurization system according to claim 5 is characterized in that: The circular tube (214) and the second electric valve (215) are both movably sleeved inside the rectangular hole (123); the pressure sensor (204), the two first electric valves (206), the second electric valve (215) and the vibrator (216) are all electrically connected to the controller (106); and the fan (102), the two centrifugal pumps (113), the four motors (116) and the two electric regulating valves (124) are all electrically connected to the controller (106).

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