A process system and a process method for quick dissolution of bagged industrial solid materials

Abstract

This invention belongs to the field of energy-saving and environmental protection technology, specifically relating to a process system and method for the rapid dissolution of bagged industrial solid materials. It includes an elevator, a bag-opening machine, a crusher, a dissolving tank, a temporary storage tank, a drum washer, and a washing tower. The system's solvent inlet is divided into two paths: one connected to the upper solvent inlet of the dissolving tank, and the other connected to pipeline I and a premixer. The system's steam inlet is also divided into two paths: one connected to the upper steam inlet of the dissolving tank, and the other connected to the upper steam inlet of the temporary storage tank. An alarm sounds when the solution temperature in the dissolving tank reaches the set first-level temperature, and the sixth control valve closes when the solution temperature reaches the set second-level temperature. Similarly, an alarm sounds when the solution temperature in the temporary storage tank reaches the set first-level temperature, and the seventh control valve closes when the solution temperature reaches the set second-level temperature. Therefore, this invention allows workers to operate without contact with the packaging bags, achieving full automation. After washing and rinsing, the solid raw materials from the waste packaging bags enter the dissolving tank along with the washing solvent.

Description

Technical Field

[0001] This invention belongs to the field of energy conservation and environmental protection technology, specifically relating to a process system and method for the rapid dissolution of bagged industrial solid materials. Background Technology

[0002] Currently, with the rapid development of modern industry and the widespread adoption of automation globally, industrial machinery has replaced most of the heavy manual labor. However, many jobs still require significant human assistance, and some industrial operating environments are harsh, posing a great threat to human physical and mental health. The dissolution of industrial solid raw materials is a common method in environmental protection, coal chemical, textile, pharmaceutical, and new energy fields. Traditional dissolution of bagged solid materials requires considerable manual intervention, including manual or mechanical handling, manual bag opening, and large-scale crushing, consuming significant human resources. The working environment is often open or semi-open, with harsh conditions. The process of unpacking and unloading industrial materials is usually accompanied by toxic gases and dust pollution, and some materials pose a potential explosion threat, affecting the physical and mental health of workers and posing significant safety hazards. Furthermore, traditional physical dissolution of solid materials after unpacking is slow, inefficient, requires personnel on duty, consumes a large amount of manpower, involves high labor intensity, and demands a high level of operational experience. Summary of the Invention

[0003] To address the problems in the background art, the present invention provides the following technical solution:

[0004] A process system for the rapid dissolution of bagged industrial solid materials.

[0005] It includes a hoist 2, a bag opener 4, a crusher 5, a dissolving tank 8, a temporary storage tank 12, a drum washer-extractor 14, and a washing tower 9;

[0006] The drum washer-extractor 14 is arranged at an angle. Both the dissolving tank 8 and the temporary storage tank 12 are equipped with double-layer differential speed stirring paddles. The upper end of each double-layer stirring paddle is equipped with a stirring motor corresponding to the upper end of the tank body.

[0007] The lower inlet of the elevator 2 is equipped with a conveyor 1, and the upper outlet of the elevator 2 is equipped with a roller conveyor 3.

[0008] The bag-opening machine 4 has a rotating grid drum 401 horizontally arranged at the top and a discharge hopper 402 at the bottom. The discharge port of the drum conveyor 3 is connected to one end of the rotating grid drum 401. The other end of the rotating grid drum 401 is connected to the upper inlet pipe of the drum washer 14 through a chute 403. A first pneumatic valve 141 is provided on the chute 403. The drum washer 141 is connected to the upper inlet pipe of the drum washer 14 through the first pneumatic valve 141. The bottom outlet of the drum washer 14 is connected to the drum washing liquid inlet pipe at the top of the dissolving tank 8. A first control valve 191 and a first filter 192 are provided on the connecting pipe. The first control valve 191 controls the washing time of the drum washer 14.

[0009] The lower outlet of the drum washer-extractor 14 leads to the packaging safety treatment via the second pneumatic valve 142 pipe;

[0010] The discharge hopper 402 is connected to the upper feed port of the crusher 5, the lower outlet chute 501 of the crusher 5 is connected to the upper inlet chute 701 of the premixer 7 through the screw conveyor 6, and the lower outlet of the premixer 7 is connected to the upper solid feed port of the dissolving tank 8.

[0011] The upper end of the dissolving tank 8 is connected to the lower end of the washing tower 9. The upper and lower spray heads of the washing tower 9 are connected in parallel through pipes and then connected to the upper part of the drum washer-extractor 14 through pipe I. The parallel pipes are respectively equipped with a first shut-off valve 157 and a second control valve 152. When the pressure difference of the washing tower 9 is greater than the set value, the second control valve 152 is opened to flush the demister of the washing tower 9. When the pressure difference of the washing tower 9 is less than the set value, the second control valve 152 is closed.

[0012] Pipeline I is equipped with a third control valve 153, which closes when the solvent in the drum washer-extractor 14 reaches the high liquid level.

[0013] The lower outlet of the dissolving tank 8 is connected sequentially through the second shut-off valve 183, the second filter 181, and the inlet pipe of the cutter 10. The outlet of the cutter 10 is connected to the inlet pipe of the conveying pump 11. The outlet of the conveying pump 11 is divided into two paths after passing through the first termination valve and the third shut-off valve. One path is connected to the return port at the top of the dissolving tank 8, and a fourth shut-off valve 184 and a first flow meter 186 are installed on the connecting path. The other path is connected to the upper inlet of the temporary storage tank 12, and a fifth cutter valve 186 is installed on the connecting path. The lower outlet of the temporary storage tank 12 is connected to the inlet of the external pump 13 through the sixth shut-off valve 201. The outlet of the external pump 13 is divided into two paths after passing through the second termination valve and the seventh shut-off valve in sequence. One path goes to the downstream process through the connecting pipeline, and the connecting pipeline is equipped with the eighth shut-off valve 203 and the third flow meter 205. The other path is connected to the return port at the top of the temporary storage tank 12, and the connecting pipeline is equipped with the ninth shut-off valve 202 and the fourth flow meter 204.

[0014] When the temporary storage tank 12 is at a high liquid level, the fourth control valve 182 is closed; when the liquid level is low, the stirring motor and the external pump 13 at the top of the temporary storage tank 12 are interlocked and shut down.

[0015] The upper outlet of the temporary storage tank 12 and the upper outlet of the scrubbing tower 9 are connected in parallel through pipelines to the negative pressure exhaust gas treatment system, and a tenth shut-off valve is provided on each of the parallel pipelines.

[0016] The lower outlets of the temporary storage tank 12 and the dissolving tank 8 are respectively connected to the condensate outlet through the eleventh shut-off valve 172 and the twelfth shut-off valve 171;

[0017] The solvent inlet of the system is divided into two paths. One path is connected to the solvent inlet pipe at the top of the dissolving tank 8 through the thirteenth shut-off valve 154, the fifth control valve 151, and the other path is connected to the pipe I and the premixer 7 through the fourteenth shut-off valve 155. The pipe connected to the premixer 7 is equipped with the fifteenth shut-off valve 156. When the dissolving tank 8 is at the preset liquid level, the fifth control valve 151 is closed. When the dissolving tank 8 is at a low liquid level, the stirring motor, the cutter 10 and the transfer pump 11 at the top of the dissolving tank 8 are interlocked and shut down.

[0018] The system's steam inlet is split into two paths after passing through the sixteenth shut-off valve. One path connects to the upper steam inlet pipe of the dissolving tank 8 via the seventeenth shut-off valve 163, the sixth control valve 161, and the other path connects to the upper steam inlet pipe of the temporary storage tank 12 via the eighteenth shut-off valve 164, the seventh control valve 162, and the upper steam inlet pipe of the temporary storage tank 12. An alarm is triggered when the solution temperature in the dissolving tank 8 reaches the set first-level temperature, and the sixth control valve 161 is closed when the solution temperature reaches the set second-level temperature. Similarly, an alarm is triggered when the solution temperature in the temporary storage tank 12 reaches the set first-level temperature, and the seventh control valve 162 is closed when the solution temperature reaches the set second-level temperature.

[0019] Furthermore, three solvent inlets 702 are uniformly provided on the same circumference of the inner wall of the premixer 7. The solvent enters tangentially along the inner wall of the premixer 7, so that a laminar flow interface is formed on the inner wall of the premixer 7, and the solid material does not directly contact the inner wall of the premixer 7, thereby reducing the corrosion of the material by the solvent.

[0020] The inner wall of the premixer 7 below the solvent inlet 702 is provided with a three-layer solvent spray nozzle 703, and the pitch angle between adjacent solvent spray nozzles 703 is 120°.

[0021] Each solvent inlet 702 and each layer of solvent spray nozzle 703 are connected to the solvent inlet pipeline via the fourteenth shut-off valve 155, the fifteenth shut-off valve 156, and the solvent inlet pipeline.

[0022] Furthermore, both the dissolving tank 8 and the temporary storage tank 12 are equipped with steam jackets.

[0023] The present invention also includes a process method for the above-mentioned process system, specifically comprising the following operational steps:

[0024] Step 1):

[0025] Close the fifteenth shut-off valve 156, the second shut-off valve 183, the fourth shut-off valve 184, and the sixth shut-off valve 201, and open the thirteenth shut-off valve 154, the fourteenth shut-off valve 155, and the first shut-off valve 157; close the first pneumatic valve 141 and the second pneumatic valve 142; close the first control valve 191; all other valves are open; continuously add solvent to the dissolving tank 8; the solvent addition rate is 60 m / s. 3 / h~90m 3 / h;

[0026] Step 2):

[0027] When the liquid level in the dissolving tank 8 submerges the upper blade of the double-layer differential speed stirring paddle and reaches 1 / 3 to 1 / 2 of the tank volume, the fifth control valve 151 is closed to stop adding solvent; the corresponding stirring motor is started, and the double-layer differential speed stirring paddle continues to stir; the rotation speed of the stirring shaft is 50 to 100 r / min, and the speed difference between the upper and lower stirring paddles is 5 to 20 r / min.

[0028] Step 3):

[0029] Start the washing tower 9, screw conveyor 6, crusher 5, bag remover 4, roller conveyor 3, elevator 2 and roller conveyor 1 in sequence; open the fifteenth shut-off valve 156 and the first shut-off valve 157, and the solvent begins to flow into the premixer 7, washing tower 9 and roller washer 14.

[0030] Step 4):

[0031] The ton bag is placed on the roller conveyor 1 by a forklift, robotic arm or lifting equipment. The conveyor sends the ton bag to the inlet of the elevator 2. When it approaches the inlet, the sixth shut-off valve 201 is opened and the ton bag enters the elevator 2. After being lifted to the height of the roller conveyor 3, the ninth shut-off valve 202 is opened and the material is sent into the bag unpacking machine 4 through the roller conveyor 3.

[0032] Step 5):

[0033] The inner blades of the rotating grid drum 401 cut through the packaging bag. Solid materials smaller than 100-150mm pass through the grid and enter the crusher 5. Larger, cohesive materials are crushed after multiple impacts with the inner blades and enter the crusher 5. The packaging bag of the material enters the chute 403 after being torn open by the blades.

[0034] Step 6):

[0035] After the crusher 5 crushes the material to 4-8mm, the material is sent to the premixer by the screw conveyor 6. After premixing with the solvent in the premixer 7, the material enters the dissolving tank 8. The feeding speed of the ton bag is 20t / h-50t / h; the mixed liquid, i.e., slurry, is obtained.

[0036] Step 7):

[0037] When the solvent in the drum washer-extractor 14 reaches a high level, the third control valve 153 is closed; when the broken packaging bags in the chute 403 of the bag unpacker 4 accumulate for a certain period of time, the first pneumatic valve 141 is opened, the packaging bags enter the drum washer-extractor 14, and the first pneumatic valve 141 is closed.

[0038] The drum washer-extractor 14 begins to rotate and clean. After approximately 5-10 minutes, the first control valve 191 opens, discharging the cleaning solution into the drum washer-extractor inlet of the dissolving tank 8. The drum then rotates at high speed to dehydrate. Once dehydration is complete, the first control valve 191 closes, and the third control valve 153 opens, allowing solvent to be added. The above steps are repeated, and the drum washer-extractor 14 performs one rinse and dehydration cycle. After rinsing and dehydration, the second pneumatic valve 142 opens, and the cleaned products are packaged and safely disposed of. One cycle takes approximately 10-20 minutes.

[0039] Step 8):

[0040] Solid feeding continues. After feeding is complete, the fifteenth shut-off valve 156 is closed, the second shut-off valve 183 and the fourth shut-off valve 184 are opened, and the cutting pump 10 and the conveying pump 11 are started to shear the mixture at high speed. Full reflux operation is performed. The washing tower 9, the drum washer 14 and the dissolving tank continue to operate in full reflux operation for 5 to 15 minutes. At this time, the drum washer is completed, all the washing liquid is returned to the dissolving tank 8, and the first shut-off valve 157 and the third control valve 153 are closed.

[0041] Step 9):

[0042] Open and adjust the fifth shut-off valve 185 to adjust the flow rate of the solution to the return port at the top of the dissolving tank 8 and the inlet at the top of the temporary storage tank 12. The flow rate ratio measured by the first flow meter 186 and the second flow meter 187 is 1:1 to 1:4.

[0043] Step 10):

[0044] When the solution reaches 1 / 2 of the volume of the temporary storage tank 12, the stirring motor at the top of the temporary storage tank 12 is started, and the corresponding double-layer differential speed stirring blades continue to stir. The speed of the upper blade is 50-100 r / min, and the speed difference between the lower and upper blades is 5-20 r / min.

[0045] Step 11):

[0046] Solution is continuously injected into the temporary storage tank 12. When the high liquid level is reached, the fourth control valve 182 closes, valve 201 opens, the valve openings of the ninth shut-off valve 202 and the eighth shut-off valve 203 are adjusted, and the external pump 13 is started. The flow rate of the solution to the return port of the temporary storage tank 12 and the external pump are adjusted. The flow ratio measured by the fourth flow meter 204 and the third flow meter 205 is 1:1-1:3. Qualified finished solution is then delivered to the downstream section, with a delivery volume of 10-20 m³. 3 / h.

[0047] This invention discloses a process system for the rapid dissolution of bagged industrial solid materials. During operation, workers do not need to come into contact with the packaging bags. The entire process is automated and will not harm the human body. After washing and rinsing, the solid raw materials enter the dissolution tank along with the washing solvent from the waste packaging bags. There are no residues on the packaging bags, resulting in high raw material utilization. After cleaning, the packaging bags can be mechanically packaged and transported. The working environment is friendly and pollution-free. Furthermore, the system adds premixing, high-speed cutting, and reflux operations to the existing process and heats the dissolved liquid, effectively solving the problems of long dissolution time and unstable properties in traditional processes.

[0048] 2. This invention provides a process method for the rapid dissolution of bagged industrial solid materials. Based on a process system for the rapid dissolution of bagged industrial solid materials, the entire process is a negative pressure closed operation, which solves the dust and toxic gas hazards brought about by bag opening from the source. After the exhaust gas and dust are washed, the washing liquid is returned to the system, and the insoluble exhaust gas is sent to the negative pressure exhaust gas treatment system. The operation is simple and convenient, and the environment is safe and reliable.

[0049] 3. The stirring paddle of the present invention adopts a double-layer differential speed stirring paddle. The different speeds of the upper and lower stirring paddles are conducive to the irregular mixing of the upper and lower liquids in the tank, which is conducive to the rapid diffusion and dissolution of solid materials. In addition, the material accumulation baffles on the inner wall of the dissolution tank and the temporary storage tank have the effect of reducing laminar flow and increasing turbulent mixing, which significantly improves the system dissolution efficiency. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of a process system for the rapid dissolution of bagged industrial solid materials according to the present invention.

[0051] The components include: 2 elevator, 4 bag opener, 5 crusher, 8 dissolving tank, 12 temporary storage tank, 14 drum washer-extractor, 9 washing tower, 1 conveyor, 3 drum conveyor, 401 rotating grid drum, 402 discharge hopper, 403 chute, 501 outlet chute, 6 screw conveyor, 7 premixer, 701 inlet chute, 10 cutter, 11 conveying pump, 13 external pump, 141 first pneumatic valve, 142 second pneumatic valve, 191 first control valve, 152 second control valve, 153 third control valve, 182 fourth control valve, 151 fifth control valve, 161 sixth control valve, and 7th control valve. Control valve 162, first filter 192, second filter 181, first shut-off valve 157, second shut-off valve 183, third shut-off valve, fourth shut-off valve 184, fifth shut-off valve 185, sixth shut-off valve 201, eighth shut-off valve 203, ninth shut-off valve 202, eleventh shut-off valve 172, twelfth shut-off valve 171, thirteenth shut-off valve 154, fourteenth shut-off valve 155, fifteenth shut-off valve 156, seventeenth shut-off valve 163, eighteenth shut-off valve 164, first flow meter 186, second flow meter 187, third flow meter 205, fourth flow meter 204. Implementation

[0052] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Example

[0053] See Figure 1 A process system for the rapid dissolution of bagged industrial solid materials.

[0054] It includes a hoist 2, a bag opener 4, a crusher 5, a dissolving tank 8, a temporary storage tank 12, a drum washer-extractor 14, and a washing tower 9;

[0055] The drum washer-extractor 14 is arranged at an angle. Both the dissolving tank 8 and the temporary storage tank 12 are equipped with double-layer differential speed stirring paddles. The upper end of each double-layer stirring paddle is equipped with a stirring motor corresponding to the upper end of the tank body.

[0056] The lower inlet of the elevator 2 is equipped with a conveyor 1, and the upper outlet of the elevator 2 is equipped with a roller conveyor 3.

[0057] The bag-opening machine 4 has a rotating grid drum 401 horizontally arranged at the top and a discharge hopper 402 at the bottom. The discharge port of the drum conveyor 3 is connected to one end of the rotating grid drum 401. The other end of the rotating grid drum 401 is connected to the upper inlet pipe of the drum washer 14 through a chute 403. A first pneumatic valve 141 is provided on the chute 403. The drum washer 141 is connected to the upper inlet pipe of the drum washer 14 through the first pneumatic valve 141. The bottom outlet of the drum washer 14 is connected to the drum washing liquid inlet pipe at the top of the dissolving tank 8. A first control valve 191 and a first filter 192 are provided on the connecting pipe. The first control valve 191 controls the washing time of the drum washer 14.

[0058] The lower outlet of the drum washer-extractor 14 leads to the packaging safety treatment via the second pneumatic valve 142 pipe;

[0059] The discharge hopper 402 is connected to the upper feed port of the crusher 5, the lower outlet chute 501 of the crusher 5 is connected to the upper inlet chute 701 of the premixer 7 through the screw conveyor 6, and the lower outlet of the premixer 7 is connected to the upper solid feed port of the dissolving tank 8.

[0060] The upper end of the dissolving tank 8 is connected to the lower end of the washing tower 9. The upper and lower spray heads of the washing tower 9 are connected in parallel through pipes and then connected to the upper part of the drum washer-extractor 14 through pipe I. The parallel pipes are respectively equipped with a first shut-off valve 157 and a second control valve 152. When the pressure difference of the washing tower 9 is greater than the set value, the second control valve 152 is opened to flush the demister of the washing tower 9. When the pressure difference of the washing tower 9 is less than the set value, the second control valve 152 is closed.

[0061] Pipeline I is equipped with a third control valve 153, which closes when the solvent in the drum washer-extractor 14 reaches the high liquid level.

[0062] The lower outlet of the dissolving tank 8 is connected sequentially through the second shut-off valve 183, the second filter 181, and the inlet pipe of the cutter 10. The outlet of the cutter 10 is connected to the inlet pipe of the conveying pump 11. The outlet of the conveying pump 11 is divided into two paths after passing through the first termination valve and the third shut-off valve. One path is connected to the return port at the top of the dissolving tank 8, and a fourth shut-off valve 184 and a first flow meter 186 are installed on the connecting path. The other path is connected to the upper inlet of the temporary storage tank 12, and a fifth cutter valve 186 is installed on the connecting path. The lower outlet of the temporary storage tank 12 is connected to the inlet of the external pump 13 through the sixth shut-off valve 201. The outlet of the external pump 13 is divided into two paths after passing through the second termination valve and the seventh shut-off valve in sequence. One path goes to the downstream process through the connecting pipeline, and the connecting pipeline is equipped with the eighth shut-off valve 203 and the third flow meter 205. The other path is connected to the return port at the top of the temporary storage tank 12, and the connecting pipeline is equipped with the ninth shut-off valve 202 and the fourth flow meter 204.

[0063] When the temporary storage tank 12 is at a high liquid level, the fourth control valve 182 is closed; when the liquid level is low, the stirring motor and external pump 13 at the top of the temporary storage tank 12 are interlocked and shut down.

[0064] The upper outlet of the temporary storage tank 12 and the upper outlet of the scrubbing tower 9 are connected in parallel through pipelines to the negative pressure exhaust gas treatment system, and a tenth shut-off valve is provided on each of the parallel pipelines.

[0065] The lower outlets of the temporary storage tank 12 and the dissolving tank 8 are respectively connected to the condensate outlet through the eleventh shut-off valve 172 and the twelfth shut-off valve 171;

[0066] The solvent inlet of the system is divided into two paths. One path is connected to the solvent inlet pipe at the top of the dissolving tank 8 through the thirteenth shut-off valve 154, the fifth control valve 151, and the other path is connected to the pipe I and the premixer 7 through the fourteenth shut-off valve 155. The pipe connected to the premixer 7 is equipped with the fifteenth shut-off valve 156. When the dissolving tank 8 is at the preset liquid level, the fifth control valve 151 is closed. When the dissolving tank 8 is at a low liquid level, the stirring motor, the cutter 10 and the transfer pump 11 at the top of the dissolving tank 8 are interlocked and shut down.

[0067] The system's steam inlet is split into two paths after passing through the sixteenth shut-off valve. One path connects to the upper steam inlet pipe of the dissolving tank 8 via the seventeenth shut-off valve 163, the sixth control valve 161, and the other path connects to the upper steam inlet pipe of the temporary storage tank 12 via the eighteenth shut-off valve 164, the seventh control valve 162, and the upper steam inlet pipe of the temporary storage tank 12. An alarm is triggered when the solution temperature in the dissolving tank 8 reaches the set first-level temperature, and the sixth control valve 161 is closed when the solution temperature reaches the set second-level temperature. Similarly, an alarm is triggered when the solution temperature in the temporary storage tank 12 reaches the set first-level temperature, and the seventh control valve 162 is closed when the solution temperature reaches the set second-level temperature.

[0068] Three solvent inlets 702 are uniformly provided on the same circumference of the inner wall of the premixer 7. The solvent enters tangentially along the inner wall of the premixer 7, so that the inner wall of the premixer 7 forms a laminar flow interface, and the solid material does not directly contact the inner wall of the premixer 7, thereby reducing the corrosion of the material by the solvent.

[0069] The inner wall of the premixer 7 below the solvent inlet 702 is provided with a three-layer solvent spray nozzle 703, and the pitch angle between adjacent solvent spray nozzles 703 is 120°.

[0070] Each solvent inlet 702 and each layer of solvent spray nozzle 703 are connected to the solvent inlet pipeline via the fourteenth shut-off valve 155, the fifteenth shut-off valve 156, and the solvent inlet pipeline.

[0071] Both the dissolving tank 8 and the temporary storage tank 12 are equipped with steam jackets. Example

[0072] An operating method for a process system for the rapid dissolution of bagged industrial solid materials:

[0073] Specifically, the following steps are included:

[0074] Step 1):

[0075] Close the fifteenth shut-off valve 156, the second shut-off valve 183, the fourth shut-off valve 184, and the sixth shut-off valve 201, and open the thirteenth shut-off valve 154, the fourteenth shut-off valve 155, and the first shut-off valve 157; close the first pneumatic valve 141 and the second pneumatic valve 142; close the first control valve 191; all other valves are open; continuously add solvent to the dissolving tank 8; the solvent addition rate is 60 m / s. 3 / h~90m 3 / h;

[0076] Step 2):

[0077] When the liquid level in the dissolving tank 8 submerges the upper blade of the double-layer differential speed stirring paddle and reaches 1 / 3 to 1 / 2 of the tank volume, the fifth control valve 151 is closed to stop adding solvent; the corresponding stirring motor is started, and the double-layer differential speed stirring paddle continues to stir; the rotation speed of the stirring shaft is 50 to 100 r / min, and the speed difference between the upper and lower stirring paddles is 5 to 20 r / min.

[0078] Step 3):

[0079] Start the washing tower 9, screw conveyor 6, crusher 5, bag remover 4, roller conveyor 3, elevator 2 and roller conveyor 1 in sequence; open the fifteenth shut-off valve 156 and the first shut-off valve 157, and the solvent begins to flow into the premixer 7, washing tower 9 and roller washer 14.

[0080] Step 4):

[0081] The ton bag is placed on the roller conveyor 1 by a forklift, robotic arm or lifting equipment. The conveyor sends the ton bag to the inlet of the elevator 2. When it approaches the inlet, the sixth shut-off valve 201 is opened and the ton bag enters the elevator 2. After being lifted to the height of the roller conveyor 3, the ninth shut-off valve 202 is opened and the material is sent into the bag unpacking machine 4 through the roller conveyor 3.

[0082] Step 5):

[0083] The inner blades of the rotating grid drum 401 cut through the packaging bag. Solid materials smaller than 100-150mm pass through the grid and enter the crusher 5. Larger, cohesive materials are crushed after multiple impacts with the inner blades and enter the crusher 5. The packaging bag of the material enters the chute 403 after being torn open by the blades.

[0084] Step 6):

[0085] After the crusher 5 crushes the material to 4-8mm, the material is sent to the premixer by the screw conveyor 6. After premixing with the solvent in the premixer 7, the material enters the dissolving tank 8. The feeding speed of the ton bag is 20t / h-50t / h; the mixed liquid, i.e., slurry, is obtained.

[0086] Step 7):

[0087] When the solvent in the drum washer-extractor 14 reaches a high level, the third control valve 153 is closed; when the broken packaging bags in the chute 403 of the bag unpacker 4 accumulate for a certain period of time, the first pneumatic valve 141 is opened, the packaging bags enter the drum washer-extractor 14, and the first pneumatic valve 141 is closed.

[0088] The drum washer-extractor 14 begins to rotate and clean. After approximately 5-10 minutes, the first control valve 191 opens, discharging the cleaning solution into the drum washer-extractor inlet of the dissolving tank 8. The drum then rotates at high speed to dehydrate. Once dehydration is complete, the first control valve 191 closes, and the third control valve 153 opens, allowing solvent to be added. The above steps are repeated, and the drum washer-extractor 14 performs one rinse and dehydration cycle. After rinsing and dehydration, the second pneumatic valve 142 opens, and the cleaned products are packaged and safely disposed of. One cycle takes approximately 10-20 minutes.

[0089] Step 8):

[0090] Solid feeding continues. After feeding is complete, the fifteenth shut-off valve 156 is closed, the second shut-off valve 183 and the fourth shut-off valve 184 are opened, and the cutting pump 10 and the conveying pump 11 are started to shear the mixture at high speed. Full reflux operation is performed. The washing tower 9, the drum washer 14 and the dissolving tank continue to operate in full reflux operation for 5 to 15 minutes. At this time, the drum washer is completed, all the washing liquid is returned to the dissolving tank 8, and the first shut-off valve 157 and the third control valve 153 are closed.

[0091] Step 9):

[0092] Open and adjust the fifth shut-off valve 185 to adjust the flow rate of the solution to the return port at the top of the dissolving tank 8 and the inlet at the top of the temporary storage tank 12. The flow rate ratio measured by the first flow meter 186 and the second flow meter 187 is 1:1 to 1:4.

[0093] Step 10:

[0094] When the solution reaches 1 / 2 of the volume of the temporary storage tank 12, the stirring motor at the top of the temporary storage tank 12 is started, and the corresponding double-layer differential speed stirring blades continue to stir. The speed of the upper blade is 50-100 r / min, and the speed difference between the lower and upper blades is 5-20 r / min.

[0095] Step 10):

[0096] Solution is continuously injected into the temporary storage tank 12. When the high liquid level is reached, the fourth control valve 182 closes, valve 201 opens, the valve openings of the ninth shut-off valve 202 and the eighth shut-off valve 203 are adjusted, and the external pump 13 is started. The flow rate of the solution to the return port of the temporary storage tank 12 and the external pump are adjusted. The flow ratio measured by the fourth flow meter 204 and the third flow meter 205 is 1:1-1:3. Qualified finished solution is then delivered to the downstream section, with a delivery volume of 10-20 m³. 3 / h.

[0097] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A process system for the rapid dissolution of bagged industrial solid materials, characterized in that: It includes a hoist (2), a bag opener (4), a crusher (5), a dissolving tank (8), a temporary storage tank (12), a drum washer-extractor (14), and a washing tower (9); The drum washer (14) is arranged at an angle. Both the dissolving tank (8) and the temporary storage tank (12) are equipped with double-layer differential speed stirring paddles. The upper end of each double-layer stirring paddle is equipped with a stirring motor corresponding to the upper end of the tank body. The lower feed inlet of the elevator (2) is equipped with a conveyor (1), and the upper discharge outlet of the elevator (2) is equipped with a roller conveyor (3). The bag-opening machine (4) has a rotating grid drum (401) arranged horizontally at the top and a discharge hopper (402) at the bottom. The discharge port of the drum conveyor (3) is connected to one end of the rotating grid drum (401). The other end of the rotating grid drum (401) is connected to the upper inlet pipe of the drum washer (14) through the chute (403). The chute (403) is equipped with a first pneumatic valve (141). The bottom outlet of the drum washer (14) is connected to the drum washing liquid inlet pipe at the top of the dissolving tank (8). The connecting pipe is equipped with a first control valve (191) and a first filter (192). The first control valve (191) controls the washing time of the drum washer (14). The lower outlet of the drum washer-extractor (14) goes to the packaging safety treatment via the second pneumatic valve (142) pipe; The discharge hopper (402) is connected to the upper feed port of the crusher (5), the lower outlet chute (501) of the crusher (5) is connected to the upper inlet chute (701) of the premixer (7) through the screw conveyor (6), and the lower outlet of the premixer (7) is connected to the upper solid feed port of the dissolving tank (8). The upper end of the dissolving tank (8) is connected to the lower end of the washing tower (9). The upper and lower spray heads of the washing tower (9) are connected in parallel through pipes and connected to the upper part of the drum washer (14) through pipe I. The parallel pipes are respectively equipped with a first shut-off valve (157) and a second control valve (152). When the pressure difference of the washing tower (9) is greater than the set value, the second control valve (152) is opened to flush the demister of the washing tower (9). When the pressure difference of the washing tower (9) is less than the set value, the second control valve (152) is closed. A third control valve (153) is installed on pipeline I. When the solvent in the drum washer (14) reaches the high liquid level, the third control valve (153) is closed. The lower outlet of the dissolving tank (8) is connected in sequence through the second shut-off valve (183), the second filter (181), and the inlet pipe of the cutter (10). The outlet of the cutter (10) is connected to the inlet pipe of the conveying pump (11). The outlet of the conveying pump (11) is divided into two paths after passing through the first termination valve and the third shut-off valve. One path is connected to the return port at the top of the dissolving tank (8), and a fourth shut-off valve (184) and a first flow meter (186) are provided on the connecting path. The other path is connected to the upper inlet of the temporary storage tank (12), and a fifth shut-off valve is provided on the connecting path. Valve (185), second flow meter (187) and fourth control valve (182), the lower outlet of the temporary storage tank (12) is connected to the inlet of the external pump (13) through the sixth shut-off valve (201), the outlet of the external pump (13) is divided into two paths after passing through the second termination valve and the seventh shut-off valve in sequence, one path goes to the downstream process through the connecting pipe, and the connecting pipe is equipped with the eighth shut-off valve (203) and the third flow meter (205), the other path is connected to the return port at the top of the temporary storage tank (12), and the connecting pipe is equipped with the ninth shut-off valve (202) and the fourth flow meter (204). When the temporary storage tank (12) is at a high liquid level, the fourth control valve (182) is closed; when the liquid level is low, the stirring motor and the external pump (13) at the top of the temporary storage tank (12) are interlocked and shut down. The upper outlet of the temporary storage tank (12) and the upper outlet of the scrubbing tower (9) are connected in parallel through pipelines to the negative pressure waste gas treatment system, and a tenth shut-off valve is provided on each of the parallel pipelines. The lower outlets of the temporary storage tank (12) and the dissolving tank (8) are respectively connected to the condensate outlet through the eleventh shut-off valve (172) and the twelfth shut-off valve (171); The solvent inlet of the system is divided into two paths. One path is connected to the solvent inlet pipe at the top of the dissolving tank (8) through the thirteenth shut-off valve (154), the fifth control valve (151), and the fourteenth shut-off valve (155). The other path is connected to the pipe I and the premixer (7) respectively, and the pipe connected to the premixer (7) is equipped with the fifteenth shut-off valve (156). When the dissolving tank (8) is at the preset liquid level, the fifth control valve (151) is closed. When the dissolving tank (8) is at a low liquid level, the stirring motor, the cutter (10) and the transfer pump (11) at the top of the dissolving tank (8) are interlocked and shut down. The system's steam inlet is divided into two paths after passing through the sixteenth shut-off valve. One path is connected to the upper steam inlet pipe of the dissolving tank (8) through the seventeenth shut-off valve (163), the sixth control valve (161), and the other path is connected to the upper steam inlet pipe of the temporary storage tank (12) through the eighteenth shut-off valve (164), the seventh control valve (162), and the upper steam inlet pipe of the temporary storage tank (12). When the solution temperature in the dissolving tank (8) reaches the set first-level temperature, an alarm is triggered. When the solution temperature reaches the set second-level temperature, the sixth control valve (161) is closed. When the solution temperature in the temporary storage tank (12) reaches the set first-level temperature, an alarm is triggered. When the solution temperature reaches the set second-level temperature, the seventh control valve (162) is closed.

2. The process system for rapid dissolution of bagged industrial solid materials according to claim 1, characterized in that: Three solvent inlets (702) are uniformly provided on the same circumference of the inner wall of the premixer (7). The solvent enters tangentially along the inner wall of the premixer (7), so that the inner wall of the premixer (7) forms a laminar flow interface, and the solid material does not directly contact the inner wall of the premixer (7), thereby reducing the corrosion of the material by the solvent. The inner wall of the premixer (7) below the solvent inlet (702) is provided with a 3-layer solvent spray nozzle (703), and the pitch angle between adjacent solvent spray nozzles (703) is 120°. Each solvent inlet (702) and each layer of solvent spray nozzle (703) is connected to the solvent inlet pipeline via the fourteenth shut-off valve (155), the fifteenth shut-off valve (156), and the solvent inlet pipeline.

3. The process system for rapid dissolution of bagged industrial solid materials according to claim 1, characterized in that: Both the dissolving tank (8) and the temporary storage tank (12) are equipped with steam jackets.

4. A process method for a process system for rapid dissolution of bagged industrial solid materials according to any one of claims 1 to 3, characterized in that: Specifically, the following steps are included: Step 1): Close the fifteenth shut-off valve (156), the second shut-off valve (183), the fourth shut-off valve (184), and the sixth shut-off valve (201), and open the thirteenth shut-off valve (154), the fourteenth shut-off valve (155), and the first shut-off valve (157); close the first pneumatic valve (141) and the second pneumatic valve (142); close the first control valve (191); all other valves are open; continuously add solvent to the dissolving tank (8); the solvent is added at a rate of 60 m / s. 3 / h~90m 3 / h; Step 2): When the liquid level in the dissolving tank (8) submerges the upper blade of the double-layer differential speed stirring paddle and reaches 1 / 3 to 1 / 2 of the tank volume, close the fifth control valve (151) and stop adding solvent; start the corresponding stirring motor and the double-layer differential speed stirring paddle continues to stir; the speed of the stirring shaft is 50 to 100 r / min and the speed difference between the upper and lower stirring paddles is 5 to 20 r / min. Step 3): Start the washing tower (9), screw conveyor (6), crusher (5), bag remover (4), drum conveyor (3), elevator (2) and conveyor (1) in sequence; open the fifteenth shut-off valve (156) and the first shut-off valve (157), and the solvent begins to flow into the premixer (7), washing tower (9) and drum washer-extractor (14). Step 4): The ton bag is placed on the conveyor (1) by a forklift, robotic arm or lifting equipment. The conveyor sends the ton bag to the inlet of the elevator (2). When it approaches the inlet, the sixth shut-off valve (201) is opened and the ton bag enters the elevator (2). After being lifted to the height of the roller conveyor (3), the ninth shut-off valve (202) is opened and the material is sent into the bag unpacking machine (4) through the roller conveyor (3). Step 5): The inner blades of the rotating grid drum (401) cut the packaging bag, and solid materials with a size of less than 150mm enter the crusher (5) through the grid. Large pieces of solid material are crushed after being impacted by the inner blades multiple times and enter the crusher (5). The packaging bag of the material enters the chute (403) after being torn open by the blades. Step 6): After the crusher (5) crushes the material to 4-8mm, the material is sent to the premixer by the screw conveyor (6). After being premixed with the solvent in the premixer (7), the material enters the dissolving tank (8). The feeding speed of the ton bag is 20t / h~50t / h; the mixed liquid, i.e. slurry, is obtained. Step 7): When the solvent in the drum washer (14) reaches a high level, the third control valve (153) is closed; when the broken packaging bags in the chute (403) of the bag unpacker (4) accumulate for a certain period of time, the first pneumatic valve (141) is opened, the packaging bags enter the drum washer (14), and the first pneumatic valve (141) is closed. The drum washer (14) starts to rotate and clean. After 5-10 minutes, the first control valve (191) is opened after cleaning, and the cleaning liquid is discharged into the drum washer liquid inlet of the dissolving tank (8). Then the drum rotates at high speed to dehydrate. After dehydration is completed, the first control valve (191) is closed and the third control valve (153) is opened. The solvent is added and the above steps are repeated. The drum washer (14) rinses and dehydrates once. After the drum washer (14) rinses and dehydrates, the second pneumatic valve (142) is opened and the cleaned packaging bags are packed and sent out for safe disposal. The above cycle process takes 10-20 minutes. Step 8): Solid feeding continues. After feeding is completed, the fifteenth shut-off valve (156) is closed, and the second shut-off valve (183) and the fourth shut-off valve (184) are opened. The cutter (10) and the conveying pump (11) are started to shear the mixture at high speed and operate in full reflux mode. The washing tower (9), the drum washer (14), and the dissolving tank continue to operate in full reflux mode for 5 to 15 minutes. At this time, the drum washer is completed, and all the washing liquid is returned to the dissolving tank (8). The first shut-off valve (157) and the third control valve (153) are closed. Step 9): Open and adjust the fifth shut-off valve (185) to adjust the flow rate of the solution to the return port at the top of the dissolving tank (8) and the inlet at the top of the temporary storage tank (12). The flow rate ratio measured by the first flow meter (186) and the second flow meter (187) is 1:1 to 1:

4. Step 10): When the solution reaches 1 / 2 of the volume of the temporary storage tank (12), the stirring motor at the top of the temporary storage tank (12) is started, and the corresponding double-layer differential speed stirring blade is continuously stirred. The speed of the upper blade is 50-100 r / min, and the speed difference between the lower and upper blades is 5-20 r / min. Step 11): Solution is continuously injected into the temporary storage tank (12). When the high liquid level is reached, the fourth control valve (182) is closed, the sixth shut-off valve (201) is opened, the valve openings of the ninth shut-off valve (202) and the eighth shut-off valve (203) are adjusted, and the external pump (13) is started. The flow rate of the solution to the return port of the temporary storage tank (12) and the external flow rate are adjusted. The flow ratio measured by the fourth flow meter (204) and the third flow meter (205) is 1:1-1:

3. The qualified finished solution is then delivered to the downstream section, with a delivery volume of 10-20m³. 3 / h.

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