A C4 liquefied gas filtration and deacidification equipment for C4 deep processing

Abstract

The present invention belongs to the technical field of liquefied gas deacidification, and specifically is a carbon four liquefied gas filtering and deacidification equipment for carbon four deep processing. It comprises a frame, the frame is fixedly connected with an acid removal tower, the acid removal tower is connected with an air inlet pipe, the acid removal tower is provided with an air outlet pipe, the inner side wall of the acid removal tower is provided with a heating plate, the acid removal tower is provided with a slag discharge pipe and a material injection pipe, the acid removal tower is fixedly connected with a blocking plate and a diverter plate, the lower side of the diverter plate is provided with uniformly distributed nozzles, the acid removal tower is fixedly connected with a temperature measuring rod, and the temperature measuring rod is provided with an expansion strip. The present invention monitors the temperature of the acid removal tower by cooperating with the temperature measuring rod and the expansion strip, so that the amount of liquefied gas entering the acid removal tower is immediately reduced after a violent reaction occurs in the acid removal tower, thereby reducing additional heat generation at the root, maintaining the stability of the temperature environment in the acid removal tower, preventing the occurrence of violent reactions in the acid removal tower, and improving the safety of the operation of the device.

Description

Technical Field

[0001] The invention relates to the technical field of liquefied gas deacidification, and in particular to a C4 liquefied gas filtering and deacidification device for C4 deep processing. Background Art

[0002] C4 hydrocarbons are an indispensable component of the oil and gas industry. They are naturally generated in the associated gas of crude oil, natural gas rich in heavy hydrocarbons, and petrochemical cracking and oil refining processes. The C4 hydrocarbons produced by the catalytic cracking unit of the oil refinery account for about 6% of the unit's processing capacity. C4 can be obtained after separation. C4 liquefied gas will be produced in the main production process of C4. The separated C4 liquefied gas contains a large amount of acidic gases (such as hydrogen sulfide, etc.), so the C4 liquefied gas needs to be directly deacidified after it is produced. In the prior art, alkaline solution is often used for spraying to remove the acidic gas in the C4 liquefied gas. In the process of removing the acidic gas in the C4 liquefied gas, the alkaline solution is used in excess, and in order to ensure the treatment of the acidic gas Effect: In the existing process of removing acidic gas from C4 liquefied gas, heating treatment is usually carried out. Some enterprises adopt PID control system to regulate the deacidification treatment of C4 liquefied gas, while a small number of enterprises still adopt the most primitive temperature measurement and control method. During the deacidification treatment of C4 liquefied gas, due to the uneven distribution of impurities in the raw materials, the content of acidic gas in the C4 liquefied gas will fluctuate in the whole process. If the content of acidic gas increases, the acidic gas in the liquefied gas will react violently with the sprayed alkali solution, and the neutralization reaction is an exothermic reaction. If some enterprises that adopt the primitive temperature measurement and control method do not handle it in time during production and processing, it will cause a sudden increase in temperature in the deacidification equipment, posing a threat to the safe operation of the entire device. Summary of the invention

[0003] In order to overcome the disadvantage that the sudden increase in acid gas concentration of C4 liquefied gas will cause violent reactions and affect the safety of the overall operation of the device, the present invention provides a temperature-controllable C4 liquefied gas filtering and deacidification equipment for C4 deep processing.

[0004] The technical scheme is as follows: A carbon four liquefied gas filtering and deacidification equipment for carbon four deep processing, comprising a frame, the frame is fixedly connected with an acid removal tower, the acid removal tower is connected with an air inlet pipe, the upper side of the acid removal tower is provided with an air outlet pipe, the inner side wall of the acid removal tower is provided with a heating plate, the lower side of the acid removal tower is provided with a slag discharge pipe and a material injection pipe, the air inlet pipe is located above the slag discharge pipe on the acid removal tower, a baffle plate and a diverter plate are fixedly connected in the acid removal tower, the diverter plate is located above the baffle plate, and the baffle plate and the diverter plate are both located at the air inlet pipe At the top, the upper sides of the baffle plate and the diverter plate are both provided with evenly distributed fillers, the lower side of the diverter plate is provided with evenly distributed nozzles, the acid removal tower is fixedly connected with a temperature measuring rod, the temperature measuring rod is located between the baffle plate and the diverter plate, an expansion strip is provided in the temperature measuring rod, a feed regulating mechanism for regulating the liquefied gas feed amount is provided on the air inlet pipe, a monitoring mechanism for monitoring the expansion degree of the expansion strip is provided on the temperature measuring rod, and a filtering reflux mechanism for filtering the precipitate in the refluxed alkali solution is provided on the acid removal tower.

[0005] More preferably, the feed regulating mechanism includes an air blocking plate, which is rotatably connected to the air intake pipe, and the air blocking plate is fixed with a first fixing rod, which is located outside the air intake pipe, and a spline seat is fixed on the side of the first fixing rod away from the air blocking plate.

[0006] More preferably, the intake pipe is fixedly connected to a second fixed rod, the intake pipe is rotatably connected to a threaded rod, the second fixed rod is slidably connected to a sliding frame, the sliding frame is threadedly connected to the threaded rod, the sliding frame is rotatably connected to a sleeve, and the sleeve is transmission-matched with the spline seat.

[0007] More preferably, the monitoring mechanism includes a monitoring rod, the monitoring rod is slidably connected to the temperature measuring rod, a spring is provided between the monitoring rod and the temperature measuring rod, the monitoring rod is in contact with the expansion strip, and the monitoring rod is fixedly connected to a first transmission rod.

[0008] More preferably, the temperature measuring rod is fixedly connected to the first fixed shell through a mounting frame, the monitoring rod and the first transmission rod are both slidably connected to the first fixed shell, the first transmission rod is slidably connected to a piston plate, the piston plate is slidably connected to the first fixed shell, the intake pipe is fixedly connected to the second fixed shell through a mounting frame, the second fixed shell is connected to the first fixed shell through a pipeline, the second fixed shell is slidably connected to the first piston rod, the first piston rod is provided with a rack, the rack on the first piston rod is located outside the second fixed shell, the sleeve is provided with a gear, and the gear on the sleeve is meshed with the rack on the first piston rod.

[0009] More preferably, a limiting plate is fixedly connected to a side of the first fixed shell away from the temperature measuring rod, the limiting plate is slidably connected to the first transmission rod, two groups of through holes are provided on the limiting plate, and a one-way valve is provided in one group of the through holes, and a tension spring is provided between the piston plate and the first transmission rod.

[0010] More preferably, a casing is fixedly connected to the outer side of the temperature measuring rod, the casing is located outside the acid removal tower, the casing is fixedly connected to the acid removal tower, and the casing is a heat-insulating material for preventing temperature loss.

[0011] More preferably, the filtering reflux mechanism includes a fixing ring, which is fixedly connected in the acid-removing tower, and the fixing ring is fixedly connected to an overflow shell, the overflow shell is provided with through holes distributed in a circumferential array, and the through holes distributed in the circumferential array on the overflow shell are provided with filter membranes, the fixing ring and the overflow shell are both located below the air inlet pipe, the fixing ring is located on the lower side of the slag discharge pipe on the acid-removing tower, the acid-removing tower is fixedly connected to a reflux pump through a mounting frame, the input end of the reflux pump is connected to the lower side of the acid-removing tower through a pipeline, the output end of the reflux pump is connected to a reflux pipe, the acid-removing tower and the diverter plate are both fixedly connected to the reflux pipe, the evenly distributed nozzles are all connected to the reflux pipe, and the reflux pipe is connected to a feed pipe.

[0012] More preferably, the acid removal tower is fixedly connected to a motor via a mounting frame, the output shaft of the motor is fixedly connected to a second transmission rod, the acid removal tower and the overflow shell are both rotatably connected to the second transmission rod, the second transmission rod is fixedly connected to a cleaning plate distributed in a mirror image, and the cleaning plate is in contact and cooperation with the overflow shell and the filter membrane distributed in a circumferential array thereon.

[0013] More preferably, it also includes a feeding adjustment mechanism for adjusting the amount of alkali solution feeding, wherein the feeding adjustment mechanism is arranged on the air intake pipe, and the feeding adjustment mechanism includes a third fixed shell, the third fixed shell is fixedly connected to the air intake pipe, the third fixed shell is slidably connected to the second piston rod, the second piston rod is fixedly connected to a sliding plate, the air intake pipe is slidably connected to the sliding plate through a mounting frame, a rack is arranged on the sliding plate, a gear is arranged on the first fixed rod, the rack on the sliding plate is meshed with the gear on the first fixed rod, the feeding pipe is fixedly connected to a fourth fixed shell through the mounting frame, the fourth fixed shell is connected to the third fixed shell through a pipeline, the fourth fixed shell is slidably connected to the third piston rod, the third piston rod is fixedly connected to the fixed plate, a rack is arranged on the fixed plate, the feeding pipe is rotatably connected to an adjusting plate, a gear is arranged on the adjusting plate, and the gear on the adjusting plate is meshed with the rack on the fixed plate.

[0014] Compared with the prior art, the present invention has the following advantages: the present invention monitors the temperature of the deacidification tower by cooperating with the temperature measuring rod and the expansion strip, so that the amount of liquefied gas entering the deacidification tower is immediately reduced after a violent reaction occurs in the deacidification tower, thereby reducing additional heat generation at the source, maintaining the stability of the temperature environment in the deacidification tower, preventing violent reactions from occurring in the deacidification tower, and improving the safety of the device operation; the intake of liquefied gas is delayed by cooperating with the piston plate and the flow limiting plate, so that the intake of liquefied gas is gradually restored after the temperature reaches a stable state, preventing the rapid recovery of the intake of liquefied gas from causing a secondary increase in temperature, thereby improving the practicality of the present device; The alkali residue in the remaining alkali solution is settled through the overflow shell, and the alkali residue is filtered together with the filter membrane thereon, so that the alkali residue will not clog the nozzle during subsequent reuse, thereby ensuring the atomization effect of the nozzle; the alkali residue attached to the filter membrane on the overflow shell is scraped off by the continuous rotation of the cleaning plate to prevent the filter membrane on the overflow shell from being clogged; the air intake of the air inlet pipe is monitored in real time by the sliding plate, and the feed amount of the feed pipe is synchronously adjusted according to the monitoring value, thereby ensuring that the neutralization consumption of hydrogen sulfide in the liquefied gas and the amount of alkali solution added are always stable, so that the concentration of the circulating alkali solution in the acid removal tower is within a stable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the internal structure of the acid removal tower of the present invention;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the matching relationship between the temperature measuring rod and the expansion strip of the present invention;

[0018] Figure 4 It is a three-dimensional structural cross-sectional view of the monitoring mechanism of the present invention;

[0019] Figure 5 A three-dimensional cross-sectional view of the internal structure of the air intake pipe of the present invention;

[0020] Figure 6 It is a three-dimensional structural cross-sectional view of the feed adjustment mechanism of the present invention;

[0021] Figure 7 It is a three-dimensional structural schematic diagram of the matching relationship between the sleeve and the first piston rod of the present invention;

[0022] Figure 8 It is a three-dimensional structural cross-sectional view of the matching relationship between the first transmission rod and the piston plate of the present invention;

[0023] Fig. 9 It is a three-dimensional structural cross-sectional view of the filtering and reflux mechanism of the present invention;

[0024] Fig.10It is a three-dimensional structural schematic diagram of the matching relationship between the overflow shell and the cleaning plate of the present invention;

[0025] Fig.11 It is a three-dimensional structural cross-sectional view of the feeding adjustment mechanism of the present invention;

[0026] Fig.12 It is a three-dimensional structural schematic diagram of the matching relationship between the fixing plate and the adjusting plate of the present invention.

[0027] The markings of the components in the accompanying drawings are as follows: 1. frame, 2. acid removal tower, 3. air inlet pipe, 4. baffle plate, 5. diverter plate, 6. nozzle, 7. temperature measuring rod, 8. expansion strip, 9. feed adjustment mechanism, 901. air baffle plate, 902. first fixed rod, 903. spline seat, 904. second fixed rod, 905. threaded rod, 906. sliding frame, 907. sleeve, 10. monitoring mechanism, 1001. monitoring rod, 1002. first transmission rod, 1003. first fixed shell, 1004. piston plate, 1005. second fixed shell, 100 6. First piston rod, 1007. Limiting plate, 1008. Sleeve shell, 11. Filter reflux mechanism, 1101. Fixed ring, 1102. Overflow shell, 1103. Reflux pump, 1104. Reflux pipe, 1105. Feed pipe, 1106. Motor, 1107. Second transmission rod, 1108. Cleaning plate, 12. Feed adjustment mechanism, 1201. Third fixed shell, 1202. Second piston rod, 1203. Sliding plate, 1204. Fourth fixed shell, 1205. Third piston rod, 1206. Fixed plate, 1207. Adjustment plate. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments 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.

[0029] Research has shown that in the prior art, alkaline solutions are often used for spraying to remove acidic gases in C4 liquefied gas. In order to ensure the treatment effect of the acidic gases, heating treatment is usually performed. Due to the uneven distribution of impurities in the raw materials, the content of acidic gases in the C4 liquefied gas will fluctuate during the entire process. If the acidic gas content increases, the acidic gases in the liquefied gas will react violently with the sprayed alkaline solution. The neutralization reaction is an exothermic reaction. If it is not handled in time, it will cause a sudden increase in temperature in the deacidification equipment, posing a threat to the safe operation of the entire device.

[0030] Embodiment 1: A C4 liquefied gas filtration and deacidification device for C4 deep processing, such as Figure 1-Figure 3As shown, it includes a frame 1, the frame 1 is fixedly connected with an acid removal tower 2, the lower part of the left side of the acid removal tower 2 is connected with an air inlet pipe 3, the upper side of the acid removal tower 2 is provided with an air outlet pipe for discharging liquefied gas without acid gas, the inner wall of the acid removal tower 2 is provided with a heating plate, the heating plate is a prior art, and is used to provide temperature conditions for alkali liquid to neutralize acid gas, which is not drawn in the figure, the lower part of the left side of the acid removal tower 2 is provided with a slag discharge pipe for discharging alkali slag, and the initial state of the slag discharge pipe is a closed state, and the lower part of the right side of the acid removal tower 2 is provided with a The inlet pipe 3 is used for injecting alkali solution into the deacidification tower 2. The air inlet pipe 3 is located above the slag discharge pipe on the deacidification tower 2. The inner side of the deacidification tower 2 is fixedly connected with a baffle plate 4 and a diverter plate 5. The diverter plate 5 is located above the baffle plate 4. The baffle plate 4 and the diverter plate 5 are both located above the air inlet pipe 3. The baffle plate 4 and the diverter plate 5 are both provided with evenly distributed through holes for dispersing and passing the liquefied gas. The upper sides of the baffle plate 4 and the diverter plate 5 are both provided with evenly distributed fillers. The fillers on the baffle plate 4 are used to disperse the alkali solution and increase the alkali. The contact area between the liquid and the acidic gas in the liquefied gas is increased to promote the neutralization reaction of the acidic gas. The filler on the upper side of the diverter plate 5 is a wreath filler. The wreath filler can provide a large contact area and is helpful to capture the moisture in the liquefied gas, thereby reducing the risk of corrosion to facilities and equipment. The lower side of the diverter plate 5 is provided with uniformly distributed nozzles 6. The nozzle 6 is an existing atomizing nozzle, which is used to atomize the alkali liquid to improve the removal efficiency of the acidic gas in the liquefied gas. The acid removal tower 2 is fixedly connected with a temperature measuring rod 7, and the temperature measuring rod 7 is located at the barrier Between the baffle plate 4 and the diverter plate 5, there is a large area of ​​contact between the alkali solution spray and the liquefied gas, so that the temperature detection of the reaction position is more accurate. An expansion strip 8 is arranged in the temperature measuring rod 7, and the expansion strip 8 is a heat-expanding material. A feed regulating mechanism 9 for adjusting the liquefied gas feed amount is arranged on the air inlet pipe 3, a monitoring mechanism 10 for monitoring the expansion degree of the expansion strip 8 is arranged on the temperature measuring rod 7, and a filtering reflux mechanism 11 for filtering the precipitate in the reflux alkali solution is arranged on the acid removal tower 2.

[0031] like Figure 4-Figure 7As shown, the feed regulating mechanism 9 includes an air blocking plate 901, which is rotatably connected to the air inlet pipe 3, and the air blocking plate 901 is sealed and matched with the air inlet pipe 3. The upper side of the air blocking plate 901 is fixedly connected to a first fixing rod 902 located on the outer side of the air inlet pipe 3, and a rubber sleeve is installed on the outer side of the first fixing rod 902 for convenient control of the first fixing rod 902. The upper side of the first fixing rod 902 is fixedly connected to a spline seat 903, and the spline seat 903 is provided with splines. The upper side of the air inlet pipe 3 is fixedly connected to a second fixing rod 904, and the upper side of the air inlet pipe 3 is rotatably connected to a threaded rod 905, and the second fixing rod 904 slides A sliding frame 906 is connected to the threaded rod 905, and the sliding frame 906 is rotatably connected to a sleeve 907. A spline groove is provided on the lower side of the sleeve 907, and the shape of the spline groove is the same as the spline part on the spline seat 903. The sleeve 907 and the spline seat 903 are matched in transmission. When the spline groove on the lower side of the sleeve 907 is engaged with the spline part of the spline seat 903, the air blocking plate 901 is in a self-adjusting state (the deflection angle is automatically adjusted according to the temperature). When the spline groove on the lower side of the sleeve 907 is not engaged with the spline part of the spline seat 903, the air blocking plate 901 is in a manually adjusted state.

[0032] like Figure 1 , Figure 4 , Figure 5 and Figure 7 As shown, the monitoring mechanism 10 includes a monitoring rod 1001, which is slidably connected to the temperature measuring rod 7, and a spring is arranged between the two. The right side of the monitoring rod 1001 contacts and cooperates with the expansion strip 8, and the left side of the monitoring rod 1001 is fixedly connected to the first transmission rod 1002. The left side of the temperature measuring rod 7 is fixedly connected to the first fixed shell 1003 through the mounting frame. The monitoring rod 1001 is slidably connected to the first fixed shell 1003, and the first transmission rod 1002 is sealed and slidably connected to the first fixed shell 1003. The first transmission rod 1002 is sealed and slidably connected to the piston plate 1004, and the piston plate 1004 is fixed to the first fixed shell 1003. The shell 1003 is sealed and slidably connected, the part between the inner side of the first fixed shell 1003 and the left side of the piston plate 1004 is filled with hydraulic oil, the upper side of the intake pipe 3 is fixedly connected with the second fixed shell 1005 through a mounting frame, the second fixed shell 1005 is filled with hydraulic oil, the second fixed shell 1005 is connected with the first fixed shell 1003 through a pipeline, the second fixed shell 1005 is sealed and slidably connected with the first piston rod 1006, the left side of the first piston rod 1006 is provided with a rack located on the outside of the second fixed shell 1005, and the sleeve 907 is provided with a gear meshing with the rack on the first piston rod 1006.

[0033] like Figure 5 and Figure 8As shown, the left part of the inner side of the first fixed shell 1003 is fixedly connected with a limiting plate 1007, the limiting plate 1007 is located on the right side of the connection between the first fixed shell 1003 and the second fixed shell 1005, the limiting plate 1007 is sealingly and slidably connected with the first transmission rod 1002, and two groups of through holes are arranged on the limiting plate 1007, each group of through holes is composed of two through holes, the average area of ​​one group of through holes is larger than the average area of ​​the other group of through holes, and a one-way valve is arranged in the one group of through holes with a larger average area, and the flow direction of the one-way valve is from right to left, a tension spring is arranged between the piston plate 1004 and the first transmission rod 1002, and the temperature measuring rod 7 is located on the outer side of the outer part of the acid-removing tower 2 and is fixedly connected with a casing 1008 fixed to the acid-removing tower 2, and the casing 1008 is a heat-insulating material for preventing temperature loss.

[0034] like Figure 2 , Fig. 9 and Fig.10 As shown, the filtering reflux mechanism 11 includes a fixed ring 1101, which is fixedly connected to the lower part of the inner side of the acid removal tower 2. The fixed ring 1101 is fixedly connected to an overflow shell 1102. The overflow shell 1102 is a conical shell for guiding the alkali slag (precipitate generated by the reaction of acidic gas and alkali solution) to move downward. The upper side of the overflow shell 1102 is provided with four through holes distributed in a circumferential array, and each through hole thereon is provided with a filter membrane for intercepting the alkali slag. The fixed ring 1101 and the overflow shell 1102 are both located below the air inlet pipe 3 to prevent the liquefied gas feed from being affected. The fixed ring 1101 is located on the lower side of the slag discharge pipe and the injection pipe on the acid removal tower 2 to ensure the smooth discharge of the alkali slag. A reflux pump 1103 is fixedly connected to the right side of the acid removal tower 2 through a mounting frame. The input end of the reflux pump 1103 is connected through a pipe The channel is connected to the lower side of the acid-removing tower 2, the output end of the reflux pump 1103 is connected to the reflux pipe 1104, the acid-removing tower 2 and the diverter plate 5 are both fixedly connected to the reflux pipe 1104, the evenly distributed nozzles 6 are all connected to the reflux pipe 1104, the right side of the reflux pipe 1104 is connected to a feed pipe 1105 for providing high-concentration alkali solution, the lower side of the acid-removing tower 2 is fixedly connected to a motor 1106 through a mounting frame, the output shaft of the motor 1106 is fixedly connected to a second transmission rod 1107, the acid-removing tower 2 and the overflow shell 1102 are both sealed and rotatably connected to the second transmission rod 1107, the part of the second transmission rod 1107 located on the upper side of the overflow shell 1102 is fixedly connected to two cleaning plates 1108 distributed in left and right mirror images, the cleaning plates 1108 are in contact and cooperation with the outer side surface of the overflow shell 1102 and the filter membranes distributed in a circumferential array thereon.

[0035] When it is necessary to use the device to deacidify C4 liquefied gas (hereinafter referred to as liquefied gas), the user first controls the heating plate in the deacidification tower 2 to heat the air temperature therein to the optimal temperature range (i.e. the optimal temperature for the neutralization reaction between the acid gas in the liquefied gas and the alkali solution). During this process, the expansion strip 8 expands due to the heat and contacts the monitoring rod 1001. The user injects alkali solution into the deacidification tower 2 through the injection pipe on the right side of the deacidification tower 2. The alkali solution accumulates on the fixed ring 1101 and flows downward through the through hole on the overflow shell 1102 to the lower side of the overflow shell 1102 until the alkali solution level on the lower side of the overflow shell 1102 is level with the lower end of the through hole above it. The user stops. Alkali solution is injected into the acid removal tower 2, and then the user rotates the air blocking plate 901 counterclockwise by 90° through the first fixed rod 902, so as to adjust the amount of liquefied gas entering the acid removal tower 2 per unit time. At the same time, the user adjusts the amount of alkali solution sprayed from the nozzle 6 evenly distributed on the diverter plate 5 through the feed pipe 1105 and the reflux pipe 1104. After the adjustment is completed, the user rotates the threaded rod 905, and the threaded rod 905 drives the sliding frame 906 to move downward with the thread, and the sliding frame 906 drives the sleeve 907 to move downward until the spline seat 903 is embedded in the spline groove of the sleeve 907. The user stops rotating the threaded rod 905, and the preparation work is completed at this time.

[0036] After the preparation work is completed, the user starts to inject liquefied gas into the deacidification tower 2 through the air inlet pipe 3, and at the same time, the user starts the reflux pump 1103. The reflux pump 1103 transports the alkali solution on the lower side of the deacidification tower 2 to the reflux pipe 1104 through the pipeline. The alkali solution flows to the evenly distributed nozzles 6 through the reflux pipe 1104. The user starts the nozzles 6 to atomize the alkali solution and spray it downward. The liquefied gas moves upward through the baffle plate 4 and the filler thereon. The atomized alkali solution neutralizes the acidic gases such as hydrogen sulfide in the liquefied gas that moves to the upper side of the baffle plate 4. The unconsumed alkali solution and the generated precipitate fall to the baffle plate. 4, and when the liquefied gas moves upward through the upper filler of the baffle plate 4, the liquefied gas and the unconsumed alkali solution are dispersed and contacted in the filler layer. The presence of the filler can increase the surface area of ​​gas-liquid contact, thereby effectively improving the contact efficiency between the gas and the alkali solution, and promoting the neutralization reaction of acidic gases such as hydrogen sulfide. The liquefied gas after deacidification continues to move upward to the upper filler layer of the diverter plate 5, and the upper filler layer of the diverter plate 5 dries the liquefied gas after deacidification. The dried liquefied gas flows to the next step through the upper pipeline of the deacidification tower 2. At this time, the deacidification of the liquefied gas is completed.

[0037] After the alkali liquid deacidifies the liquefied gas, the remaining unreacted alkali liquid (diluted alkali liquid) and the alkali residue (i.e., the precipitate generated by the reaction) move downward to the upper side of the fixed ring 1101 and the overflow shell 1102 under the action of gravity. As the processing steps are continuously performed, the liquid level heights on the upper sides of the fixed ring 1101 and the overflow shell 1102 continue to increase. During this process, the alkali residue gradually settles to the upper side of the fixed ring 1101 until the liquid level reaches the four through holes on the overflow shell 1102. The remaining alkali liquid flows out through the overflow shell 1102. 2 flows downward to the lower side of the fixed ring 1101, and the alkali residue is intercepted by the filter membrane on the overflow shell 1102. At this time, the filtered alkali liquid continues to move to the evenly distributed nozzle 6 through the reflux pump 1103 and the reflux pipe 1104 with the remaining alkali liquid on the lower side of the fixed ring 1101 and neutralizes the hydrogen sulfide in the liquefied gas again. In this process, the user supplements the high-concentration alkali liquid into the reflux pipe 1104 through the feeding pipe 1105, thereby maintaining the stability of the circulating alkali liquid concentration in the acid removal tower 2.

[0038] In the above-mentioned recycling process of alkali liquid, the user regularly opens the slag discharge pipe on the acid removal tower 2 to discharge the generated alkali slag to prevent excessive alkali slag from affecting the sedimentation efficiency. At the same time, the user starts the motor 1106, and the output shaft of the motor 1106 drives the second transmission rod 1107 and the two cleaning plates 1108 to rotate, and cleans the overflow shell 1102 and the filter membrane thereon. The alkali slag in the remaining alkali liquid is settled through the overflow shell 1102, and the alkali slag is filtered in conjunction with the filter membrane thereon, so that the alkali slag will not clog the nozzle 6 during subsequent reuse, thereby ensuring the atomization effect of the nozzle. The cleaning plate 1108 is continuously rotated to scrape off the alkali slag attached to the filter membrane on the overflow shell 1102 to prevent the filter membrane on the overflow shell 1102 from being clogged.

[0039] In the above deacidification process, due to the difference in the impurity content in the raw material for producing liquefied gas, the content of acid gas in the liquefied gas will fluctuate during the whole process. If the hydrogen sulfide content in the liquefied gas suddenly increases, resulting in an overly intense reaction in the deacidification tower 2, the following operations need to be performed to ensure the safety of the operation of the device:

[0040] If the reaction in the acid removal tower 2 is too intense, since the neutralization reaction is exothermic, the excessive reaction will cause the temperature in the acid removal tower 2 to rise, and the expansion strip 8 will continue to expand and squeeze the monitoring rod 1001 to move to the left, and squeeze the spring between the monitoring rod 1001 and the temperature measuring rod 7, and the monitoring rod 1001 drives the first transmission rod 1002 and the piston plate 1004 to move to the left synchronously, and the hydraulic oil in the first fixed shell 1003 is squeezed through the two one-way valves and two through holes on the flow limiting plate 1007 to move to its left side, and flows through the pipeline to the second fixed shell 1005, and the hydraulic oil squeezes and drives the first piston rod 1006 to move to the right, and the gear on the first piston rod 1006 moves to the right and drives the sleeve The cylinder 907 rotates clockwise, and the sleeve 907 drives the spline seat 903 to rotate clockwise, and the spline seat 903 drives the first fixed rod 902 and the air blocking plate 901 to rotate clockwise, thereby reducing the gap between the air blocking plate 901 and the air inlet pipe 3, so as to achieve the purpose of reducing the intake amount of liquefied gas, reduce the reaction raw materials, thereby reducing the reaction rate, and reducing the heat generation per unit time. The temperature of the acid removal tower 2 is monitored by the temperature measuring rod 7 and the expansion strip 8. After a violent reaction occurs in the acid removal tower 2, the amount of liquefied gas entering is immediately reduced, thereby reducing additional heat generation at the source, maintaining the stability of the temperature environment in the acid removal tower 2, preventing the occurrence of violent reactions in the acid removal tower 2, and improving the safety of the operation of the device.

[0041] As the above-mentioned heat generation gradually decreases, the temperature in the acid removal tower 2 gradually decreases, the expansion strip 8 gradually shrinks, and the spring between the monitoring rod 1001 and the temperature measuring rod 7 drives the monitoring rod 1001 to move to the right and reset. Due to the two one-way valves on the limiting plate 1007, the flow area is reduced when the oil circuit refluxes, and the monitoring rod 1001 drives the first transmission rod 1002 to move to the right and stretches the tension spring between the first transmission rod 1002 and the piston plate 1004 until the first transmission rod 1002 is reset. The tension spring between the first transmission rod 1002 and the piston plate 1004 gradually drives the piston Plate 1004 moves to the right and resets, and the oil circuit reflux drives the air blocking plate 901 to gradually reset to the state after the preparation work is completed. When the air blocking plate 901 is reset (that is, the liquefied gas feed rate is restored), the temperature in the acid removal tower 2 is maintained at the current temperature for a period of time (that is, the temperature in the acid removal tower 2 is now stable). The piston plate 1004 and the current limiting plate 1007 cooperate to delay the recovery of the liquefied gas intake. After the temperature reaches a stable state, the liquefied gas intake is gradually restored to prevent the rapid recovery of the liquefied gas intake from causing a secondary temperature increase, thereby improving the practicability of the device.

[0042] The user repeats the above steps to continuously deacidify the liquefied gas until all the liquefied gas is processed. The user stops the motor 1106, the reflux pump 1103 and the heating plate of the deacidification tower 2. At the same time, the user discharges the alkaline slag on the upper side of the fixed ring 1101 through the slag discharge pipe on the deacidification tower 2. At this time, the use of the device is completed.

[0043] Embodiment 2: Based on embodiment 1, Figure 1 , Fig.11 and Fig.12 As shown, it also includes a feeding adjustment mechanism 12 for adjusting the amount of alkali solution feeding, the feeding adjustment mechanism 12 is arranged on the air intake pipe 3, the feeding adjustment mechanism 12 includes a third fixed shell 1201, the third fixed shell 1201 is fixedly connected to the upper side of the air intake pipe 3, the third fixed shell 1201 is filled with hydraulic oil, the third fixed shell 1201 is sealingly and slidably connected with a second piston rod 1202, the left side of the second piston rod 1202 is fixedly connected with a sliding plate 1203, the air intake pipe 3 is slidably connected with the sliding plate 1203 through a mounting frame, a rack is arranged on the left side of the sliding plate 1203, and a first fixed rod 902 is arranged The front side of the feeding pipe 1105 is fixedly connected to the fourth fixed shell 1204 through a mounting frame, the fourth fixed shell 1204 is filled with hydraulic oil, the fourth fixed shell 1204 is connected to the third fixed shell 1201 through a pipeline, the fourth fixed shell 1204 is sealingly and slidingly connected to the third piston rod 1205, the left side of the third piston rod 1205 is fixedly connected to a fixed plate 1206 with a rack on the rear side, the feeding pipe 1105 is rotatably connected to the adjusting plate 1207, and the two are sealed and matched, and the adjusting plate 1207 is provided with a gear meshing with the rack on the fixed plate 1206.

[0044] When initially adjusting the air intake volume of the air intake pipe 3, the user drives the first fixed rod 902 to rotate counterclockwise by 90°, the gear on the first fixed rod 902 meshes with the rack on the sliding plate 1203 and drives the sliding plate 1203 to move to the left, the sliding plate 1203 drives the second piston rod 1202 to move to the left, and squeezes the hydraulic oil into the fourth fixed shell 1204 through the pipeline, the hydraulic oil squeezes and drives the third piston rod 1205 to move to the left, the third piston rod 1205 drives the fixed plate 1206 to move to the left, the rack on the fixed plate 1206 meshes with the gear on the adjusting plate 1207 and drives the adjusting plate 1207 rotates 90° clockwise to increase the gap between the feed pipe 1105 and the adjustment plate 1207 (i.e., the amount of high-concentration alkali solution added is increased synchronously). In the process of adjusting the air intake of the air intake pipe 3, the air intake of the air intake pipe 3 is always proportional to the feed amount of the feed pipe 1105. The air intake of the air intake pipe 3 is monitored in real time through the sliding plate 1203, and the feed amount of the feed pipe 1105 is synchronously adjusted according to the monitoring value, thereby ensuring that the neutralization consumption of hydrogen sulfide in the liquefied gas and the amount of alkali solution added are always stable, so that the concentration of the circulating alkali solution in the acid removal tower 2 is within a stable range.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A carbon four liquefied gas filtering and deacidification device for carbon four deep processing, comprising a frame (1), the frame (1) is fixedly connected with a deacidification tower (2), the deacidification tower (2) is connected with an air inlet pipe (3), the upper side of the deacidification tower (2) is provided with an air outlet pipe, the inner side wall of the deacidification tower (2) is provided with a heating plate, the lower side of the deacidification tower (2) is provided with a slag discharge pipe and a material injection pipe, the air inlet pipe (3) is located on the upper slag discharge pipe of the deacidification tower (2) Above, a baffle plate (4) and a diverter plate (5) are fixedly connected in the acid removal tower (2), the diverter plate (5) is located above the baffle plate (4), the baffle plate (4) and the diverter plate (5) are both located above the air inlet pipe (3), the upper sides of the baffle plate (4) and the diverter plate (5) are both provided with uniformly distributed fillers, and the lower side of the diverter plate (5) is provided with uniformly distributed nozzles (6), characterized in that: The invention also comprises a temperature measuring rod (7), the temperature measuring rod (7) being fixedly connected to the deacidification tower (2), the temperature measuring rod (7) being located between the blocking plate (4) and the diverter plate (5), an expansion strip (8) being arranged inside the temperature measuring rod (7), a feed regulating mechanism (9) for regulating the feed amount of liquefied gas being arranged on the air inlet pipe (3), a monitoring mechanism (10) for monitoring the expansion degree of the expansion strip (8) being arranged on the temperature measuring rod (7), and a filtering reflux mechanism (11) for filtering the sediment in the refluxed alkali solution being arranged on the deacidification tower (2); The feed regulating mechanism (9) comprises an air blocking plate (901), the air blocking plate (901) is rotatably connected to the air inlet pipe (3), the air blocking plate (901) is fixedly connected to a first fixing rod (902), the first fixing rod (902) is located outside the air inlet pipe (3), and a spline seat (903) is fixedly connected to a side of the first fixing rod (902) away from the air blocking plate (901); The monitoring mechanism (10) comprises a monitoring rod (1001), the monitoring rod (1001) is slidably connected to the temperature measuring rod (7), a spring is arranged between the monitoring rod (1001) and the temperature measuring rod (7), the monitoring rod (1001) is in contact with the expansion strip (8), and the monitoring rod (1001) is fixedly connected to a first transmission rod (1002); The filtering reflux mechanism (11) comprises a fixing ring (1101), the fixing ring (1101) is fixedly connected to the inside of the acid removal tower (2), the fixing ring (1101) is fixedly connected to an overflow shell (1102), the overflow shell (1102) is provided with through holes distributed in a circumferential array, and the through holes distributed in the circumferential array on the overflow shell (1102) are all provided with filtering membranes, the fixing ring (1101) and the overflow shell (1102) are both located below the air inlet pipe (3), and the fixing ring (1101) is located above the acid removal tower (2). On the lower side of the slag discharge pipe on the tower (2), the deacidification tower (2) is fixedly connected to a reflux pump (1103) through a mounting frame, the input end of the reflux pump (1103) is connected to the lower side of the deacidification tower (2) through a pipeline, the output end of the reflux pump (1103) is connected to a reflux pipe (1104), the deacidification tower (2) and the diverter plate (5) are both fixedly connected to the reflux pipe (1104), the evenly distributed nozzles (6) are all connected to the reflux pipe (1104), and the reflux pipe (1104) is connected to a feed pipe (1105).

2. The C4 liquefied gas filtration and deacidification equipment for C4 deep processing according to claim 1 is characterized in that: The air intake pipe (3) is fixedly connected to a second fixed rod (904), the air intake pipe (3) is rotatably connected to a threaded rod (905), the second fixed rod (904) is slidably connected to a sliding frame (906), the sliding frame (906) is threadedly connected to the threaded rod (905), the sliding frame (906) is rotatably connected to a sleeve (907), and the sleeve (907) is transmission-matched with the spline seat (903).

3. The C4 liquefied gas filtration and deacidification equipment for C4 deep processing according to claim 1 is characterized in that: The temperature measuring rod (7) is fixedly connected to a first fixed shell (1003) through a mounting frame, the monitoring rod (1001) and the first transmission rod (1002) are both slidably connected to the first fixed shell (1003), the first transmission rod (1002) is slidably connected to a piston plate (1004), the piston plate (1004) is slidably connected to the first fixed shell (1003), the intake pipe (3) is fixedly connected to a second fixed shell (1005) through a mounting frame, the second fixed shell (1005) is connected to the first fixed shell (1003) through a pipeline, the second fixed shell (1005) is slidably connected to a first piston rod (1006), the first piston rod (1006) is provided with a rack, the rack on the first piston rod (1006) is located outside the second fixed shell (1005), the sleeve (907) is provided with a gear, the gear on the sleeve (907) is meshed with the rack on the first piston rod (1006).

4. The C4 liquefied gas filtration and deacidification equipment for C4 deep processing according to claim 3 is characterized in that: A limiting plate (1007) is fixedly connected to a side of the first fixed shell (1003) away from the temperature measuring rod (7), and the limiting plate (1007) is slidably connected to the first transmission rod (1002). Two groups of through holes are provided on the limiting plate (1007), and a one-way valve is provided in one group of the through holes. A tension spring is provided between the piston plate (1004) and the first transmission rod (1002).

5. The C4 liquefied gas filtration and deacidification equipment for C4 deep processing according to claim 4, characterized in that: A casing (1008) is fixedly connected to the outer side of the temperature measuring rod (7). The casing (1008) is located outside the acid removal tower (2). The casing (1008) is fixedly connected to the acid removal tower (2). The casing (1008) is a heat-insulating material used to prevent temperature loss.

6. The C4 liquefied gas filtration and deacidification equipment for C4 deep processing according to claim 5, characterized in that: The acid removal tower (2) is fixedly connected to a motor (1106) via a mounting frame, and the output shaft of the motor (1106) is fixedly connected to a second transmission rod (1107). The acid removal tower (2) and the overflow shell (1102) are both rotationally connected to the second transmission rod (1107), and the second transmission rod (1107) is fixedly connected to a cleaning plate (1108) distributed in a mirror image, and the cleaning plate (1108) is in contact with and cooperates with the overflow shell (1102) and the filter membranes distributed in a circumferential array thereon.

7. The C4 liquefied gas filtration and deacidification equipment for C4 deep processing according to claim 1 is characterized in that: The invention also comprises a feeding adjustment mechanism (12) for adjusting the amount of alkali solution feeding, wherein the feeding adjustment mechanism (12) is arranged on the air intake pipe (3), and the feeding adjustment mechanism (12) comprises a third fixed shell (1201), wherein the third fixed shell (1201) is fixedly connected to the air intake pipe (3), wherein the third fixed shell (1201) is slidably connected to a second piston rod (1202), wherein the second piston rod (1202) is fixedly connected to a sliding plate (1203), wherein the air intake pipe (3) is slidably connected to the sliding plate (1203) via a mounting frame, wherein a rack is arranged on the sliding plate (1203), wherein a gear is arranged on the first fixed rod (902), and wherein the sliding plate (1203) is provided with a plurality of gears. The upper rack is meshed with the gear on the first fixed rod (902); the feeding tube (1105) is fixedly connected to the fourth fixed shell (1204) through a mounting frame; the fourth fixed shell (1204) is connected to the third fixed shell (1201) through a pipeline; the fourth fixed shell (1204) is slidably connected to the third piston rod (1205); the third piston rod (1205) is fixedly connected to a fixed plate (1206); a rack is provided on the fixed plate (1206); the feeding tube (1105) is rotatably connected to an adjusting plate (1207); a gear is provided on the adjusting plate (1207); the gear on the adjusting plate (1207) is meshed with the rack on the fixed plate (1206).

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