A three-in-one synthesis furnace and process for byproduct steam hydrochloric acid

Abstract

This invention belongs to the field of industrial hydrochloric acid preparation technology, specifically a three-in-one synthesis furnace and process for byproduct steam hydrochloric acid. Addressing the problem of energy and process waste caused by the cumbersome drying process required for chlorine gas after electrolysis during hydrochloric acid synthesis in existing technologies, the present invention proposes the following solution: a main tank structure with a uniform diameter at both ends and an overall cylindrical shape. The main tank structure includes a sealed base, with a downward-opening combustion tank fixed to the upper surface of the sealed base. A gas-gathering hood is embedded in the center of the top of the combustion tank, and a burner is fixed in the center of the combustion tank. An intermediate cylinder is fixed to the top of the combustion tank, and an annular baffle is pre-reserved on the inner circumference of the intermediate cylinder near the bottom. This invention allows chlorine gas dried with dilute sulfuric acid to be pressurized and then passed into a sulfuric acid drying tank for final drying, before being passed into the burner at the bottom to obtain dry and pure chlorine gas, thus improving reaction efficiency.

Description

Technical Field

[0001] This invention relates to the field of industrial hydrochloric acid preparation technology, and in particular to a three-in-one synthesis furnace and process for byproduct steam hydrochloric acid. Background Technology

[0002] Hydrochloric acid, commonly known as an aqueous solution of hydrogen chloride, is a monoprotic inorganic strong acid and an extremely important industrial raw material. In the synthesis of industrial hydrochloric acid, hydrogen gas and chlorine gas generated from electrolysis are first passed through a quartz burner in a hydrochloric acid synthesis furnace for combustion, producing hydrogen chloride gas. After cooling, the hydrogen chloride gas is absorbed by water to become hydrochloric acid. During the hydrochloric acid synthesis process, the chlorine gas after electrolysis often contains a certain amount of moisture. If this moisture is directly introduced into the mixture for combustion, it will not only lead to incomplete combustion but also pose certain safety hazards.

[0003] According to existing technologies, a separate drying tower is usually required to dry the chlorine gas before it enters the combustion chamber. However, moisture in the air is ubiquitous, and there is still a distance between the chlorine gas coming out of the drying tower and the combustion chamber. Therefore, we propose a new type of industrial hydrochloric acid synthesis furnace that integrates drying, generation, cooling, and absorption functions to improve synthesis efficiency and reduce energy consumption. Summary of the Invention

[0004] To address the technical problem in existing technologies where the chlorine gas produced by electrolysis during hydrochloric acid synthesis requires a complex drying process, resulting in energy and process waste, this invention adopts the following technical solution:

[0005] A three-in-one synthesis furnace for by-product steam hydrochloric acid includes a main tank structure with a uniform diameter at both ends and an integral cylindrical shape. The main tank structure includes a sealed base, with a combustion bottom tank opening downwards fixed to the upper surface of the sealed base. A gas-gathering hood is embedded in the center of the top of the combustion bottom tank, and a burner is fixed in the center of the combustion bottom tank. An intermediate cylinder is fixed to the top of the combustion bottom tank, and an annular baffle strip is pre-reserved on the inner circumference of the intermediate cylinder near the bottom. A fixing plate is sealed and fixed to the upper surface of the annular baffle strip, and a sulfuric acid drying tank is fixed to the upper surface of the fixing plate. A piston gas tank extending above the gas-gathering hood is located on the right side of the intermediate cylinder, below the annular baffle strip. A three-way inlet valve pipe 2203 is fixed to the outer circumference of the piston gas tank near the bottom of the tank, and two spiral gas pipes wound together are fixed to the two inlets of the three-way inlet valve pipe 2203. The spiral gas pipe is connected to the side wall of the gas-gathering hood at one end away from the piston gas cylinder; the top of the combustion bottom cylinder and the lower surface of the fixed support plate form a sealed cooling water chamber; a three-way gas outlet valve pipe 2202 is fixed at the bottom of the piston gas cylinder, and both gas outlet holes of the three-way gas outlet valve pipe 2202 are fixed with connecting pipes that are inserted into the bottom of the hydrochloric acid synthesis tank and communicate with the inside of the hydrochloric acid synthesis tank; a semi-circular support plate is fixed at one-third of the circumference of the inner wall of the intermediate cylinder near the top, and a sulfuric acid drying tank is fixed on the upper surface of the semi-circular support plate. The sulfuric acid drying tank is filled with concentrated sulfuric acid, and a second conveying pipe and a gas conveying pipe are respectively inserted at the upper and lower ends of the sulfuric acid drying tank; a top cylinder is fixed at the top of the intermediate cylinder, and a dilute sulfuric acid drying mechanism is set inside the top cylinder. An L-shaped gas filling mechanism is embedded at the bottom of the top cylinder, and a raw material chlorine gas inlet pipe is inserted into the side of the top cylinder near the top.

[0006] Preferably, the outer wall of the burner is fixed with spokes, and the end of the spokes away from the burner is fixed to the inner circumference of the combustion bottom barrel; a hydrogen pipe is provided on the side of the burner near the second delivery pipe; the hydrogen pipe has the same diameter as the second delivery pipe, and the end of the second delivery pipe away from the sulfuric acid drying barrel is inserted into the combustion bottom barrel and connected to the input end of the burner; by setting the burner at the bottom, the situation of no load in the second delivery pipe is avoided, ensuring that there is a continuous supply of dried chlorine gas in the second delivery pipe, and ensuring that the reaction continues.

[0007] Preferably, the intermediate cylinder has a circular hole with a diameter matching the outer diameter of the piston cylinder below the annular partition bar, and a piston disc is slidably connected in the piston cylinder. A reciprocating push rod is fixed on the middle side of the piston disc away from the bottom of the cylinder. A reciprocating pushing mechanism is provided on the outer wall of the intermediate cylinder near the opening of the piston cylinder, and a water pipe hole is opened near the rear bottom of the intermediate cylinder for inserting a cooling water circulation pipe.

[0008] Preferably, the top of the hydrochloric acid synthesis tank is provided with a cover, and a sliding bearing is embedded in the middle of the cover. A long rotating shaft extending vertically towards the bottom of the hydrochloric acid synthesis tank is rotatably connected to the sliding bearing, and a sealing rotating partition is fixed to the outer wall of the long rotating shaft. The sealing rotating partition divides the interior of the hydrochloric acid synthesis tank into two parts, and a finished hydrochloric acid discharge pipe is provided at the bottom of the hydrochloric acid synthesis tank away from the two connecting pipes. The two connecting pipes and the finished hydrochloric acid discharge pipe are not in the same semicircle, and a water supply pipe is provided on the same side of the hydrochloric acid synthesis tank directly above the finished hydrochloric acid discharge pipe.

[0009] Preferably, an angle indicator is fixed to the outer circumference of the long rotating shaft near its top, and the direction of the angle indicator is consistent with the direction of the sealed rotating partition. A driven pulley is fixed to the top of the long rotating shaft, and a double belt through hole of the same height as the driven pulley is opened on the rear side of the intermediate cylinder near the middle. A heat-insulating motor base is fixed to the outer wall of the intermediate cylinder near the upper part of the double belt through hole, and a servo motor is fixed to the surface of the heat-insulating motor base. A drive pulley is fixed to the top of the output shaft of the servo motor, and the same drive belt is wound between the drive pulley and the driven pulley. The solution replacement can be remotely controlled by the drive belt.

[0010] Preferably, an observation window is provided on the front of the intermediate cylinder near the center, and the position of the observation window is between the semi-circular support plate and the cover, so as to more clearly confirm the position of the angle indicator, and then determine the rotation angle of the sealing rotating partition, so as to ensure that the discharge and filling of hydrochloric acid are more accurate.

[0011] Preferably, the dilute sulfuric acid drying mechanism further includes a top cover fixed to the top of the top tank, with a sealed bearing embedded in the middle of the top cover. A vertical transmission pipe is rotatably connected to the sealed bearing, and the top of the transmission pipe is connected to a dilute sulfuric acid inlet pipe. A swing sprayer extending horizontally towards the circumference of the top tank is fixedly connected to the bottom of the transmission pipe, and a connecting drive plate is fixed to the end of the swing sprayer near the center of rotation. A spray pipe is fixed to the bottom of the connecting drive plate, and a connecting hose is connected between the spray pipe and the inlet of the raw material chlorine inlet pipe. A swing gear is fixedly sleeved to the top of the transmission pipe, and a swing drive box adapted to the swing gear is provided on the upper surface of the top cover. An external threaded pipe connected to the bottom of the top tank and communicating with the sulfuric acid drying tank below is screwed to the bottom of the top tank. Multiple support rods are provided at the top of the external threaded pipe, and the same cap is fixed to the top of the support rods. A filler layer is provided at the top of the cap, which allows the dilute sulfuric acid to be swing-sprayed into the top tank for full contact during use, improving the initial drying efficiency of the chlorine.

[0012] Preferably, the bottom of the top cylinder has a second round hole away from the external threaded pipe, and the right side of the middle cylinder near the top has a secondary through hole that matches the second round hole. A rubber retainer is engaged in the secondary through hole. An L-shaped curved cylinder is inserted between the rubber retainer and the second round hole. The opening of the L-shaped curved cylinder faces downward. The L-shaped inflation mechanism also includes an annular cap fitted onto the top of the L-shaped curved cylinder. Multiple one-way air inlet valves are embedded on the outer circumference of the L-shaped curved cylinder near the top. Each one-way air inlet valve includes an inclined outer tube. A spring stop is fixed in the middle of the inner side of the outer tube. A return spring is fixed at the top of the spring stop. A sealing cap that seals the top opening of the outer tube is fixed at the top of the return spring. The inner wall of the straight tube at the top of the L-shaped bend is slidably connected to an anti-torsion piston disc, and the bottom end of the anti-torsion piston disc is fixed with a push spring for pushing and pulling. The bottom end of the push spring is fixed with a push rod two, and the outer wall of the push rod two is fixed with two symmetrically arranged anti-slip protrusions. The inner wall of the straight tube at the bottom of the L-shaped bend is fixed with a guide rail that matches the anti-slip protrusions. A buffer block is provided on the inner wall at the corner of the L-shaped bend to assist the push spring in pushing. A steel wire is also provided between the lower surface of the anti-torsion piston disc and the push rod two. The top of the L-shaped bend is provided with a one-way vent valve one, and the end of the gas supply pipe one away from the sulfuric acid drying tank is inserted into the top of the one-way vent valve one.

[0013] Preferably, the interior of the sulfuric acid drying tank is provided with zigzag partitions with interlocking distribution points. The end of the gas supply pipe away from the L-shaped bend is inserted above the bottom zigzag partition. The side wall of the intermediate cylinder near the rear has a sulfuric acid replenishment pipe insertion hole, and a sulfuric acid replenishment pipe extending to the bottom of the sulfuric acid drying tank is inserted into the sulfuric acid replenishment pipe insertion hole. The reciprocating propulsion mechanism also includes a conveyor frame fixed to the outer wall of the intermediate cylinder between the L-shaped bend and the piston gas tank. The conveyor frame is in the shape of an "I" and a conveyor wheel is provided at each of the four corners of the conveyor frame. The same toothed conveyor belt is wound around the four conveyor wheels. The toothed conveyor belt is fixedly connected to the reciprocating push rod one and the push rod two, and moves in opposite directions. A connecting rod and a reduction motor are provided on the side of the toothed conveyor belt away from the intermediate cylinder, and a propulsion wheel that is rotatably connected to the connecting rod is fixed at the top of the output shaft of the reduction motor.

[0014] A three-in-one synthesis process for byproduct steam hydrochloric acid includes the following steps:

[0015] S1: When in use, the chlorine gas obtained by electrolysis is introduced into the top tank through the raw material chlorine gas inlet pipe at the top for preliminary dilute sulfuric acid spray drying. The top tank is filled with packing material. At this time, the raw material chlorine gas is spread out under the action of the moving swing sprayer and comes into contact with a large amount of dilute sulfuric acid for drying.

[0016] At this point, the geared motor in the reciprocating propulsion mechanism is started again, and the L-shaped gas charging mechanism forms a power pump and pressurize the chlorine gas that has been dried for the first time. The chlorine gas that has been dried by spraying with dilute sulfuric acid is then introduced into the sulfuric acid drying tank through the gas transmission pipe for thorough drying. After that, it enters the burner at the bottom through the second transmission pipe connected at the top and mixes with the hydrogen gas that enters at the same time for combustion.

[0017] S2: The HCl gas generated after combustion is temporarily stored in the gas collection hood, and under the rapid extraction of the piston gas tank, the HCl gas is drawn into the spiral gas pipe, and then cooled to the optimal temperature through the cooling water area before being introduced into the hydrochloric acid synthesis tank.

[0018] Before synthesis, the sealing rotating partition is rotated in a front-to-back direction to ensure that the outlets of the two connecting pipes are on the same side of the sealing rotating partition.

[0019] S3: When the hydrochloric acid concentration reaches the set value, start the servo motor on the back to rotate the pure water to the position above the two connecting pipes. At this time, the hydrochloric acid that has reached the standard concentration can be easily pushed to the finished hydrochloric acid discharge pipe. Then open the valve to discharge it. After discharge, fill it with pure water for the next use. The whole process can release the finished product and add pure water without stopping the machine.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. By using the L-shaped gas filling mechanism, the chlorine gas dried by dilute sulfuric acid can be pressurized and then introduced into the sulfuric acid drying tank for final drying. After that, it can be introduced into the burner at the bottom to obtain dry and pure chlorine gas, thereby improving the reaction efficiency.

[0022] 2. With the set sealed rotating baffle, when the hydrochloric acid reaches the required concentration, the pure water can be rotated to the position above the two connecting pipes. At this time, the hydrochloric acid that has reached the standard concentration can be easily pushed to the finished hydrochloric acid discharge pipe. Then, the valve can be opened to discharge it. After discharge, the pure water can be filled in for the next use. The entire process can release the finished product and add pure water without stopping the machine.

[0023] 3. By controlling the reciprocating advance of the push rod two, the chlorine gas drawn into the anti-torsion piston disc can be continuously pressurized, thereby continuously introducing chlorine gas into the inside of the sulfuric acid drying tank; in conjunction with the toothed conveyor belt, the L-shaped gas filling mechanism and piston gas tank can be driven to run synchronously, thereby providing power output for the operation of chlorine gas and HCl gas inside. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a three-in-one synthesis furnace for by-product steam hydrochloric acid proposed in this invention;

[0025] Figure 2This is a side view of a three-in-one synthesis furnace for by-product steam hydrochloric acid proposed in this invention;

[0026] Figure 3 This invention proposes a three-in-one synthesis furnace for by-product steam hydrochloric acid. Figure 2 Schematic diagram of the cross-sectional structure along line AA;

[0027] Figure 4 This is a schematic diagram of the internal structure of the hydrochloric acid synthesis tank and the sulfuric acid drying tank of a three-in-one hydrochloric acid by-product steam synthesis furnace proposed in this invention.

[0028] Figure 5 This is a cross-sectional view of a one-way inlet valve in a three-in-one synthesis furnace for by-product steam hydrochloric acid proposed in this invention.

[0029] Figure 6 This is a half-section three-dimensional structural diagram of the main tank structure of a three-in-one synthesis furnace for by-product steam hydrochloric acid proposed in this invention.

[0030] Figure 7 This is a cross-sectional structural schematic diagram of a sulfuric acid drying tank for a three-in-one synthesis furnace for by-product steam hydrochloric acid proposed in this invention.

[0031] Figure 8 This is a cross-sectional schematic diagram of the L-shaped gas filling mechanism in a three-in-one synthesis furnace for by-product steam hydrochloric acid proposed in this invention.

[0032] Figure 9 This is a top view schematic diagram of the hydrochloric acid synthesis mechanism in a three-in-one hydrochloric acid synthesis furnace with by-product steam proposed in this invention;

[0033] Figure 10 This invention proposes a three-in-one hydrochloric acid synthesis furnace mechanism for by-product steam hydrochloric acid synthesis. Figure 9 A schematic diagram of the cross-sectional structure along line BB.

[0034] In the diagram: 1. Sealed chassis; 2. Combustion base; 3. Hydrogen pipe; 4. Intermediate cylinder; 401. Secondary perforation; 402. Double belt perforation; 403. Round hole one; 404. Water pipe hole; 405. Annular baffle strip; 406. Sulfuric acid replenishment pipe insertion hole; 5. Second delivery pipe; 6. Observation window; 7. Gas delivery pipe one; 8. Swing gear; 9. Dilute sulfuric acid inlet pipe; 10. Top cover; 11. Raw material chlorine inlet pipe; 12. Top tank; 1201. Round hole two; 13. Rubber retaining ring; 14. L-shaped inflation mechanism; 141. Annular cap; 142. One-way air inlet valve one; 143. Spring stop; 144. Reset tension spring; 145. Sealing cover; 146. Top rod two; 147. Buffer block; 148. Advancing spring; 149. Anti-torsion piston disc; 15. Guide rail; 16. Gear transmission. 17. Conveyor frame; 18. Connecting rod; 19. Propulsion wheel; 20. Gear motor; 21. Reciprocating push rod; 22. Piston gas tank; 2201. Connecting pipe; 2202. Three-way exhaust valve pipe; 2203. Three-way intake valve pipe; 23. Cooling water circulation pipe; 24. Finished hydrochloric acid discharge pipe; 25. Swing drive box; 26. Servo motor; 27. Drive belt; 28. Gas gathering hood; 29. ​​Spiral gas pipe; 30. Fixed support plate; 31. Connecting hose; 32. Swing sprayer; 33. Cap; 34. External threaded pipe; 35. Semi-circular support plate; 36. Sulfuric acid drying tank; 361. Sulfuric acid replenishment pipe; 362. Zigzag partition; 37. Sealed rotating partition; 38. Long rotating shaft; 3801. Angle indicator; 39. Burner; 40. Hydrochloric acid synthesis tank; 41. Cover. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] In this invention, reference is made to Figure 1-10A three-in-one synthesis furnace for by-product steam hydrochloric acid includes a main tank structure with a uniform diameter and an overall cylindrical structure. The main tank structure includes a sealed base plate 1, horizontally fixed to the ground and forming a disc shape. A combustion bottom tank 2 with its opening facing downwards is sealed and fixed to the upper surface of the sealed base plate 1. A gas-gathering hood 28 with its opening facing downwards is embedded in the middle of the top of the combustion bottom tank 2. A burner 39 is fixed in the middle of the combustion bottom tank 2 for burning the mixed hydrogen and chlorine. An intermediate cylinder 4 is fixed to the top of the combustion bottom tank 2, and an annular baffle 405 is reserved on the inner circumference of the intermediate cylinder 4 at about one-third of its height from the bottom. The upper surface of the annular baffle 405 is sealed and fixed. A fixed support plate 30 is provided, and a sulfuric acid drying tank 36 is fixed on the upper surface of the fixed support plate 30. A piston gas tank 22, extending horizontally above the gas-gathering hood 28, is located on the right side of the intermediate cylinder 4, below the annular partition bar 405. A three-way inlet valve pipe 2203 is fixed to the outer circumference of the piston gas tank 22 near the bottom of the tank. Two spiral gas pipes 29, wound together, are fixed to the two inlets of the three-way inlet valve pipe 2203. The end of the spiral gas pipe 29 away from the piston gas tank 22 is inserted into and connected to the side wall of the gas-gathering hood 28. The top of the combustion bottom tank 2 and the lower surface of the fixed support plate 30 form a sealed cooling water chamber, used to cool the combustion gases for a long time. To achieve sufficient cooling before re-integration into water at the optimal temperature, thus improving synthesis efficiency, a three-way vent valve 2202 is fixed at the bottom of the piston gas tank 22, and both vent holes of the three-way vent valve 2202 are fixed with connecting pipes 2201 that are inserted into the bottom of the hydrochloric acid synthesis tank 40 and communicate with the inside of the hydrochloric acid synthesis tank 40. Controlling the operation of the piston gas tank 22 can accelerate the delivery of the gas generated in the gas gathering hood 28 into the hydrochloric acid synthesis tank 40, thereby accelerating the dissolution of hydrochloric acid gas and water and improving fusion efficiency. A semi-circular support plate 35 is fixed on the inner circumference of the intermediate cylinder 4 near the top third, and the upper surface of the semi-circular support plate 35 is fixed. A sulfuric acid drying tank 36 is provided, which is filled with concentrated sulfuric acid. A second conveying pipe 5 and a gas conveying pipe 7 are respectively inserted into the upper and lower ends of the sulfuric acid drying tank 36. A top tank 12 is fixed at the top of the intermediate cylinder 4. A dilute sulfuric acid drying mechanism is provided inside the top tank 12, and an L-shaped gas filling mechanism 14 is embedded at the bottom of the top tank 12. A raw material chlorine gas inlet pipe 11 is inserted into the side of the top tank 12 near the top. Through the L-shaped gas filling mechanism 14, the chlorine gas dried by dilute sulfuric acid can be pressurized and then introduced into the sulfuric acid drying tank 36 for final drying. After that, it is introduced into the burner 39 at the bottom to obtain dry and pure chlorine gas, thereby improving the reaction efficiency.

[0037] Reference Figure 3A spoke rod is fixed to the outer wall of the burner 39, and the end of the spoke rod away from the burner 39 is fixed to the inner circumference of the combustion bottom barrel 2. A hydrogen pipe 3 is provided on the side of the burner 39 near the second conveying pipe 5. The hydrogen pipe 3 has the same diameter as the second conveying pipe 5. The end of the second conveying pipe 5 away from the sulfuric acid drying barrel 36 is inserted into the combustion bottom barrel 2 and connected to the input end of the burner 39. By setting the burner 39 at the bottom, the situation of no load in the second conveying pipe 5 is avoided, and the dried chlorine gas can be continuously input into the second conveying pipe 5 to ensure that the reaction continues.

[0038] Reference Figure 3 and Figure 6 The intermediate cylinder 4 has a circular hole 403 with a diameter matching the outer diameter of the piston cylinder 22 below the annular partition bar 405. A piston disc is slidably connected in the piston cylinder 22. A reciprocating push rod 21 is fixed on the middle side of the piston disc away from the bottom of the cylinder. A reciprocating pushing mechanism is provided on the outer wall of the intermediate cylinder 4 near the opening of the piston cylinder 22. A water pipe hole 404 is opened near the bottom rear side of the intermediate cylinder 4 for inserting the cooling water circulation pipe 23.

[0039] Reference Figure 3 , Figure 4 and Figure 10 The top of the hydrochloric acid synthesis tank 40 is equipped with a cover 41, and a sliding bearing is embedded in the middle of the cover 41. A long rotating shaft 38 extending vertically towards the bottom of the hydrochloric acid synthesis tank 40 is rotatably connected to the sliding bearing, and a sealing rotating partition 37 is fixed to the outer wall of the long rotating shaft 38. The sealing rotating partition 37 divides the interior of the hydrochloric acid synthesis tank 40 into two parts, and a finished hydrochloric acid discharge pipe 24 is provided at the bottom of the hydrochloric acid synthesis tank 40 away from the two connecting pipes 2201; the two connecting pipes 2201 and the finished hydrochloric acid discharge pipe 24 are not in the same location. Within a semicircle, a water supply pipe is installed directly above the hydrochloric acid synthesis tank 40 on the same side as the finished hydrochloric acid discharge pipe 24. Through the installed sealing rotating baffle 37, when the hydrochloric acid reaches the required concentration, pure water can be rotated to the position above the two connecting pipes 2201. At this time, the hydrochloric acid that has reached the standard concentration can be easily pushed to the finished hydrochloric acid discharge pipe 24, and then the valve can be opened to discharge it. After discharge, pure water can be refilled for the next use. The entire process can release the finished product and add pure water without stopping the machine.

[0040] Reference Figure 4 , Figure 9 and Figure 10An angle indicator 3801 is fixed near the top of the circumferential outer wall of the long rotating shaft 38, and the direction of the angle indicator 3801 is consistent with the direction of the sealed rotating partition 37. A driven pulley is fixed at the top of the long rotating shaft 38, and a double belt through hole 402 with the same height as the driven pulley is opened near the middle of the rear side of the intermediate cylinder 4. A heat-insulating motor base is fixed above the double belt through hole 402 on the outer wall of the intermediate cylinder 4, and a servo motor 26 is fixed on the surface of the heat-insulating motor base. A drive pulley is fixed at the top of the output shaft of the servo motor 26, and the same drive belt 27 is wound between the drive pulley and the driven pulley. The solution replacement can be remotely controlled by the drive belt 27.

[0041] Reference Figure 1 and Figure 3 and Figure 4 An observation window 6 is provided on the front of the intermediate cylinder 4 near the center, and the position of the observation window 6 is between the semi-circular support plate 35 and the cover 41, so as to more clearly confirm the position of the angle indicator 3801, and then determine the rotation angle of the sealing rotating partition 37, so as to ensure that the discharge and filling of hydrochloric acid are more accurate.

[0042] Reference Figure 2 and Figure 3 The dilute sulfuric acid drying mechanism also includes a top cover 10 fixed to the top of the top tank 12, and a sealed bearing is embedded in the middle of the top cover 10. A vertical transmission pipe is rotatably connected to the sealed bearing, and the top of the transmission pipe is connected to a dilute sulfuric acid inlet pipe 9. The bottom end of the transmission pipe is fixedly connected to a swing sprayer 32 extending horizontally to the circumference of the top tank 12. A connecting drive plate is fixed to one end of the swing sprayer 32 near the center of rotation, and a spray pipe is fixed to the bottom end of the connecting drive plate. A connecting pipe is connected to the inlet of the raw material chlorine gas inlet pipe 11. The top of the hose 31 is fixedly fitted with a swing gear 8, and the upper surface of the top cover 10 is provided with a swing drive box 25 that is compatible with the swing gear 8; the bottom of the top tank 12 is screwed with an external threaded pipe 34 that communicates with the sulfuric acid drying tank 36 below, and the top of the external threaded pipe 34 is provided with multiple support rods, the top of the support rods is fixed with the same cap 33, and the top of the cap 33 is provided with a packing layer, so that dilute sulfuric acid can be swing-sprayed into the top tank 12 for full contact during use, thereby improving the initial drying efficiency of chlorine.

[0043] Reference Figure 5-6 and Figure 8The bottom of the top cylinder 12 has a second round hole 1201 located away from the external threaded pipe 34. The right side of the intermediate cylinder 4, near the top, has a secondary perforation 401 that matches the second round hole 1201. A rubber retainer 13 is engaged in the secondary perforation 401. An L-shaped bend is inserted between the rubber retainer 13 and the second round hole 1201. The opening of the L-shaped bend faces downwards. The L-shaped inflation mechanism 14 also includes an annular cap 141 fitted onto the top of the L-shaped bend. Multiple one-way air inlet valves 142 are embedded near the top of the circumference of the L-shaped bend. Each one-way air inlet valve 142 includes an inclined outer tube. A spring stop 143 is fixed inside the outer tube. A return spring 144 is fixed to the top of the spring stop 143. A sealing cap 145, which seals the top opening of the outer tube, is fixed to the top of the return spring 144. An anti-torsion piston disc 1 is slidably connected to the inner wall of the straight section at the top of the L-shaped bend. 49. The bottom end of the anti-torsion piston disc 149 is fixed with a push spring 148 for pushing and pulling. The bottom end of the push spring 148 is fixed with a push rod 146. The outer wall of the push rod 146 is fixed with two symmetrically arranged anti-slip protrusions. The inner wall of the straight pipe at the bottom of the L-shaped bend is fixed with a guide rail 15 that matches the anti-slip protrusions. The inner wall of the corner of the L-shaped bend is provided with a buffer block 147 to assist the push spring 148 in pushing. A steel wire is also provided between the lower surface of the anti-torsion piston disc 149 and the push rod 146. The top of the L-shaped bend is provided with a one-way gas valve. The end of the gas pipe 7 away from the sulfuric acid drying tank 36 is inserted into the top of the one-way gas valve. By controlling the reciprocating push of the push rod 146, the chlorine gas drawn into the anti-torsion piston disc 149 can be continuously pressurized, and then chlorine gas is continuously introduced into the interior of the sulfuric acid drying tank 36.

[0044] Reference Figure 1 , Figure 3 and Figure 7The sulfuric acid drying tank 36 has a zigzag baffle 362 with interlocking points inside. The end of the gas supply pipe 7 away from the L-shaped bend is inserted above the bottommost zigzag baffle 362. The side wall of the intermediate cylinder 4 has a sulfuric acid replenishment pipe insertion hole 406 near the rear, and a sulfuric acid replenishment pipe 361 extending to the bottom of the sulfuric acid drying tank 36 is inserted into the sulfuric acid replenishment pipe insertion hole 406. The reciprocating propulsion mechanism also includes a conveyor frame 17 fixed to the outer wall of the intermediate cylinder 4 between the L-shaped bend and the piston gas tank 22. The conveyor frame 17 has an overall "I" shaped structure. Each of the four corners is equipped with a conveyor wheel, and the same toothed conveyor belt 16 is wound around the four conveyor wheels. The toothed conveyor belt 16 is fixedly connected to the reciprocating push rod 1 21 and the push rod 2 146, and moves in opposite directions. A connecting rod 18 and a reduction motor 20 are provided on the side of the toothed conveyor belt 16 away from the intermediate cylinder 4, and a propulsion wheel 19 that is rotatably connected to the connecting rod 18 is fixed at the top of the output shaft of the reduction motor 20. The toothed conveyor belt 16 can synchronously drive the L-shaped inflation mechanism 14 and the piston gas tank 22 to run, thereby providing power output for the operation of chlorine and HCl gas inside.

[0045] A three-in-one synthesis process for byproduct steam hydrochloric acid includes the following steps:

[0046] S1: When in use, the chlorine gas obtained by electrolysis is introduced into the top tank 12 through the raw material chlorine gas inlet pipe 11 at the top for preliminary dilute sulfuric acid spray drying. The top tank 12 is filled with packing material. At this time, the raw material chlorine gas is spread out under the action of the moving swing sprayer 32 and comes into contact with a large amount of dilute sulfuric acid for drying.

[0047] At this time, the reduction motor 20 in the reciprocating propulsion mechanism is started again, and the L-shaped gas charging mechanism 14 forms a power pump and pressurize the chlorine gas after the first drying. The chlorine gas dried by the dilute sulfuric acid spray is then introduced into the sulfuric acid drying tank 36 through the gas supply pipe 7 for full drying. After that, it enters the burner 39 at the bottom through the second conveying pipe 5 connected at the top, and mixes and burns with the hydrogen gas that enters at the same time.

[0048] S2: The HCl gas generated after combustion is temporarily stored in the gas collection hood 28, and under the rapid extraction of the piston gas tank 22, the HCl gas is drawn into the spiral gas pipe 29, and then cooled to the optimal temperature through the cooling water area before being introduced into the hydrochloric acid synthesis tank 40.

[0049] Before synthesis, the sealing rotating partition 37 is rotated to a front-to-back orientation to ensure that the outlets of the two connecting pipes 2201 are on the same side of the sealing rotating partition 37.

[0050] S3: When the concentration of hydrochloric acid reaches the set value, start the servo motor 26 on the rear side to rotate the pure water to the position above the two connecting pipes 2201. At this time, the hydrochloric acid that has reached the standard concentration can be easily pushed to the finished hydrochloric acid discharge pipe 24. Then open the valve to discharge it. After discharge, fill it with pure water for the next use. The whole process can release the finished product and add pure water without stopping the machine.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A three-in-one synthesis furnace for by-product steam hydrochloric acid, comprising a main tank structure with a uniform upper and lower diameter and an overall cylindrical structure, the main tank structure including a sealed base plate (1), a combustion bottom tank (2) with an opening facing downwards fixed on the upper surface of the sealed base plate (1), a gas-gathering hood (28) embedded in the middle of the top of the combustion bottom tank (2), and a burner (39) fixed in the middle of the combustion bottom tank (2); characterized in that, The top of the combustion bottom barrel (2) is fixed with an intermediate cylinder (4), and the inner circumference of the intermediate cylinder (4) is reserved with an annular partition strip (405) near the bottom. The upper surface of the annular partition strip (405) is sealed with a fixed support plate (30). The upper surface of the fixed support plate (30) is fixed with a sulfuric acid drying barrel (36). The right side of the intermediate cylinder (4) is located below the annular partition strip (405) and a piston gas barrel (22) extending into the gas gathering hood (28) is provided. The outer circumference of the piston gas barrel (22) is fixed with a three-way air inlet valve pipe (2203) near the bottom of the barrel. The two inlets of the three-way air inlet valve pipe (2203) are fixed with two spiral gas pipes (29) twisted together. The end of the spiral gas pipe (29) away from the piston gas barrel (22) is inserted and connected to the side wall of the gas gathering hood (28). The top of the combustion bottom barrel (2) and the lower surface of the fixed support plate (30) form a closed cooling water chamber. The piston gas cylinder (22) has a three-way gas outlet valve pipe (2202) fixed at the bottom of the cylinder, and the two gas outlet holes of the three-way gas outlet valve pipe (2202) are fixed with a connecting pipe (2201) that is inserted into the bottom of the hydrochloric acid synthesis tank (40) and communicates with the inside of the hydrochloric acid synthesis tank (40); the inner circumference of the intermediate cylinder (4) is fixed with a semi-circular support plate (35) near the top third, and the upper surface of the semi-circular support plate (35) is fixed with a sulfuric acid drying tank (36), which is filled with concentrated sulfuric acid, and the upper and lower ends of the sulfuric acid drying tank (36) are respectively connected with a second conveying pipe (5) and a gas conveying pipe (7); the top of the intermediate cylinder (4) is fixed with a top cylinder (12), the top cylinder (12) is equipped with a dilute sulfuric acid drying mechanism, and the bottom of the top cylinder (12) is fitted with an L-shaped gas filling mechanism (14), and the side of the top cylinder (12) is connected with a raw material chlorine gas inlet pipe (11) near the top. The top of the hydrochloric acid synthesis tank (40) is provided with a cover (41), and a sliding bearing is embedded in the middle of the cover (41). A long rotating shaft (38) extending vertically to the bottom of the hydrochloric acid synthesis tank (40) is rotatably connected in the sliding bearing. A sealing rotating partition (37) is fixed on the outer wall of the long rotating shaft (38). The sealing rotating partition (37) divides the interior of the hydrochloric acid synthesis tank (40) into two parts. A finished hydrochloric acid discharge pipe (24) is provided at the bottom of the hydrochloric acid synthesis tank (40) away from the two connecting pipes (2201). The two connecting pipes (2201) and the finished hydrochloric acid discharge pipe (24) are not in the same semicircle. A water supply pipe is provided directly above the same side of the hydrochloric acid synthesis tank (40) above the finished hydrochloric acid discharge pipe (24).

2. The by-product steam hydrochloric acid three-in-one synthesis furnace according to claim 1, characterized in that, The burner (39) has a spoke rod fixed to its outer wall, and the end of the spoke rod away from the burner (39) is fixed to the inner circumference of the combustion bottom barrel (2); a hydrogen pipe (3) is provided on the side of the burner (39) near the second conveying pipe (5); and the hydrogen pipe (3) has the same diameter as the second conveying pipe (5), and the end of the second conveying pipe (5) away from the sulfuric acid drying barrel (36) is inserted into the combustion bottom barrel (2) and connected to the input end of the burner (39).

3. The by-product steam hydrochloric acid three-in-one synthesis furnace according to claim 2, characterized in that, The intermediate cylinder (4) has a circular hole (403) with a diameter matching the outer diameter of the piston cylinder (22) below the annular partition bar (405). A piston disc is slidably connected in the piston cylinder (22), and a reciprocating push rod (21) is fixed on the side of the piston disc away from the bottom of the cylinder. A reciprocating pushing mechanism is provided on the outer wall of the intermediate cylinder (4) near the opening of the piston cylinder (22). A water pipe hole (404) is opened near the bottom of the rear side of the intermediate cylinder (4) for inserting a cooling water circulation pipe (23).

4. The by-product steam hydrochloric acid three-in-one synthesis furnace according to claim 3, characterized in that, An angle indicator (3801) is fixed near the top of the circumferential outer wall of the long rotating shaft (38), and the direction of the angle indicator (3801) is consistent with the direction of the sealed rotating partition (37). A driven pulley is fixed at the top of the long rotating shaft (38), and a double belt through hole (402) at the same height as the driven pulley is opened near the middle of the rear side of the intermediate cylinder (4). A heat-insulating motor base is fixed above the double belt through hole (402) on the outer wall of the intermediate cylinder (4), and a servo motor (26) is fixed on the surface of the heat-insulating motor base. A drive pulley is fixed at the top of the output shaft of the servo motor (26), and the same drive belt (27) is wound between the drive pulley and the driven pulley.

5. The by-product steam hydrochloric acid three-in-one synthesis furnace according to claim 4, characterized in that, An observation window (6) is provided on the front of the intermediate cylinder (4) near the center, and the position of the observation window (6) is between the semi-circular support plate (35) and the cover (41).

6. The by-product steam hydrochloric acid three-in-one synthesis furnace according to claim 5, characterized in that, The dilute sulfuric acid drying mechanism also includes a top cover (10) fixed to the top of the top tank (12), and a sealed bearing is embedded in the middle of the top cover (10). A vertical transmission pipe is rotatably connected to the sealed bearing, and the top of the transmission pipe is connected to a dilute sulfuric acid inlet pipe (9). The bottom end of the transmission pipe is fixedly connected to a swing sprayer (32) extending horizontally to the circumferential edge of the top tank (12), and a connecting drive plate is fixed at one end of the swing sprayer (32) near the rotation center. A spray pipe is fixed at the bottom end of the connecting drive plate, and the spray pipe is connected to... A connecting hose (31) is connected between the inlets of the raw material chlorine gas inlet pipe (11); a swing gear (8) is fixedly sleeved at the top of the transmission pipe, and a swing drive box (25) adapted to the swing gear (8) is provided on the upper surface of the top cover (10); an external threaded pipe (34) connected to the sulfuric acid drying tank (36) below is screwed to the bottom of the top bucket (12), and multiple support rods are provided at the top of the external threaded pipe (34), and the same cap (33) is fixed at the top of the support rods, and a packing layer is provided at the top of the cap (33).

7. The by-product steam hydrochloric acid three-in-one synthesis furnace according to claim 6, characterized in that, The bottom of the top cylinder (12) is provided with a second circular hole (1201) away from the external threaded pipe (34), and the right side of the middle cylinder (4) is provided with a secondary perforation (401) that matches the second circular hole (1201) near the top. A rubber retainer (13) is engaged in the secondary perforation (401). The same L-shaped bend is inserted between the rubber retainer (13) and the second circular hole (1201). The opening of the L-shaped bend faces downward. The L-shaped inflation mechanism (14) also includes an annular cap (141) fitted onto the top of the L-shaped bend. Multiple one-way air inlet valves (142) are embedded in the outer circumference of the L-shaped bend near the top. Each one-way air inlet valve (142) includes an inclined outer tube with a spring stop fixed in the middle of the inner side of the outer tube. (143) A return spring (144) is fixed at the top of the spring stop (143), and a sealing cover (145) is fixed at the top of the return spring (144) to seal the top of the outer tube opening; an anti-torsion piston disc (149) is slidably connected to the inner wall of the straight tube part at the top of the L-shaped bend, and a push spring (148) for pushing and pulling is fixed at the bottom of the anti-torsion piston disc (149), and a push rod (146) is fixed at the bottom of the push spring (148), and two anti-slip protrusions are fixed on the outer wall of the push rod (146), and a guide rail (15) adapted to the anti-slip protrusions is fixed on the inner wall of the straight tube at the bottom of the L-shaped bend, and a buffer block (147) is provided on the inner wall of the corner of the L-shaped bend. A steel wire is also provided between the lower surface of the anti-torsion piston disc (149) and the push rod (146); and a one-way gas valve is provided at the top of the L-shaped bend, and the end of the gas pipe (7) away from the sulfuric acid drying barrel (36) is inserted into the top of the one-way gas valve.

8. The by-product steam hydrochloric acid three-in-one synthesis furnace according to claim 7, characterized in that, The sulfuric acid drying barrel (36) is provided with a zigzag baffle (362) with interlocking distribution points inside. The end of the gas supply pipe (7) away from the L-shaped bend is inserted above the bottom zigzag baffle (362). The side wall of the intermediate cylinder (4) has a sulfuric acid replenishment pipe insertion hole (406) near the rear side, and a sulfuric acid replenishment pipe (361) extending to the bottom of the sulfuric acid drying barrel (36) is inserted into the sulfuric acid replenishment pipe insertion hole (406). The reciprocating propulsion mechanism also includes a conveyor frame fixed on the outer wall of the intermediate cylinder (4) between the L-shaped bend and the piston gas barrel (22). (17), and the conveyor frame (17) is in the shape of an "I" shape. Conveyor wheels are provided at the four corners of the conveyor frame (17). The same toothed conveyor belt (16) is wound around the four conveyor wheels. The toothed conveyor belt (16) is fixedly connected to the reciprocating top rod one (21) and the top rod two (146) and forms opposite directions of movement. A connecting rod (18) and a reduction motor (20) are provided on the side of the toothed conveyor belt (16) away from the intermediate cylinder (4). The top of the output shaft of the reduction motor (20) is fixed with a propulsion wheel (19) that is rotatably connected to the connecting rod (18).

9. A three-in-one synthesis process for by-product steam hydrochloric acid, comprising a three-in-one synthesis furnace for by-product steam hydrochloric acid as described in claim 8, characterized in that, Includes the following steps: S1: When in use, the chlorine gas obtained by electrolysis is introduced into the top tank (12) through the raw material chlorine gas inlet pipe (11) at the top for preliminary dilute sulfuric acid spray drying. The top tank (12) is filled with packing material. At this time, the raw material chlorine gas is spread out under the action of the moving swing sprayer (32) and comes into contact with a large amount of dilute sulfuric acid for drying. At this time, the geared motor (20) in the reciprocating propulsion mechanism is started again, and the L-shaped gas filling mechanism (14) forms a power pump and pressurize the chlorine gas after the first drying. At this time, the chlorine gas dried by the dilute sulfuric acid spray is introduced into the sulfuric acid drying tank (36) through the gas transmission pipe (7) for full drying. Then, it enters the burner (39) at the bottom end through the second transmission pipe (5) connected at the top, and mixes and burns with the hydrogen gas that enters at the same time. S2: The HCl gas generated after combustion is temporarily stored in the gas collection hood (28), and under the rapid extraction of the piston gas tank (22), the HCl gas is drawn into the spiral gas pipe (29), and after passing through the cooling water area, it is cooled to the optimal temperature, and then introduced into the hydrochloric acid synthesis tank (40). Before synthesis, the sealing rotating partition (37) is rotated in a front-to-back direction to ensure that the outlets of the two connecting pipes (2201) are on the same side of the sealing rotating partition (37); S3: When the concentration of hydrochloric acid reaches the set value, start the servo motor (26) on the rear side and rotate the pure water to the position above the two connecting pipes (2201). At this time, the hydrochloric acid that has reached the standard concentration can be easily pushed to the finished hydrochloric acid discharge pipe (24). Then open the valve to discharge it. After discharge, fill it with pure water for the next use. The whole process can release the finished product and add pure water without stopping the machine.

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