A system for prolonging the service life of a dry-process acetylene generator

Abstract

The utility model discloses a system of prolonging the service life of dry process acetylene generator relates to dry process acetylene production process technical field, especially relates to dry process acetylene water recycling system, the service life of dry process acetylene generator can be prolonged. Including washing tower, thickener, plate and frame filter press, clear liquid pool, clear liquid jar and acetylene generator, the utility model will the existing thick slurry concentration, and the clear water recycling, and the thick slurry after concentration is transported to the inside and outside of the box -type car after plate and frame filter press, and the clear liquid enters the clear water pool, and then enters acetylene generator use through water injection pump, and the service life of the existing generator 2~3 months can be prolonged to 7~8 months.

Description

Technical Field

[0001] This utility model relates to the field of dry acetylene production technology, and in particular to a system for extending the service life of a dry acetylene generator. Background Technology

[0002] A dry acetylene generator is a device that produces acetylene gas by controlling the reaction between water and calcium carbide. Its working principle involves spraying a small amount of water in mist into the generator to react with the calcium carbide, thereby generating acetylene. Dry acetylene generators are widely used in chemical, welding, and other fields, especially in applications requiring high purity and yield of acetylene. By optimizing reaction conditions and equipment design, dry acetylene generators can effectively improve acetylene production efficiency and purity while ensuring the safety of the production process.

[0003] Currently, during the operation of dry acetylene generators in China, the generator's stand-alone operating cycle is only 2-3 months. Research has found that this cycle is consistently characterized by slurry water from the bottom of the scrubbing tower. High solids content in the generator's reaction water and blockage in the scrubbing tower's heat exchanger negatively impact the generator's lifespan, preventing the unit from operating stably and efficiently for extended periods. Each generator overhaul wastes significant manpower and resources and is extremely inefficient. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a system for extending the service life of dry acetylene generators, thereby solving problems such as short operating cycles and increased production costs of existing generators.

[0005] This utility model is achieved through the following technical solution:

[0006] A system for extending the service life of a dry acetylene generator includes a scrubbing tower, a thickener, a plate and frame filter press, a clear liquid tank, a clear liquid reservoir, and an acetylene generator. The slurry outlet at the bottom of the scrubbing tower is connected to the central cylinder of the thickener via a slurry delivery pump and a slurry delivery pipeline. The liquid outlet at the bottom of the thickener is connected to the plate and frame filter press via a slurry filter press pump and a filter press pipeline. The clear liquid outlet at the bottom of the plate and frame filter press is connected to the clear liquid tank via a clear liquid pipeline. The clear liquid tank is connected to the clear liquid reservoir via a clear liquid pump. A water injection pump and a gas phase pipe scrubbing pump are connected to the bottom of the clear liquid reservoir. The water injection pump is connected to the inlet of the acetylene generator via a water injection pipeline. The gas phase pipe scrubbing pump is connected to the spray inlet at the top of the scrubbing tower and the gas phase pipe of the acetylene generator via spray pipelines. The gas phase pipe of the acetylene generator is also connected to the inlet at the bottom of the scrubbing tower.

[0007] The thickener's central cylinder is equipped with a variable frequency stirrer, which rotates 2-4 revolutions per minute.

[0008] The top of the clear liquid tank is equipped with a clear liquid overflow pipeline, which is connected to the clear liquid pool.

[0009] The thickener is equipped with an overflow pipeline at the bottom, which is connected to the clear liquid tank.

[0010] A DN25 spray water device is provided on both sides of the gas phase pipe of the acetylene generator.

[0011] The slurry conveying pipeline, filter press pipeline, overflow pipeline, gas phase pipeline, water injection pipeline, and spray pipeline bends are all equipped with removable and flushable four-way blind covers.

[0012] Control valves are installed on the pipelines connecting the washing tower, slurry conveying pump, slurry conveying pipeline, thickener, frequency converter, slurry filter press pump, filter press pipeline, plate and frame filter press, overflow pipeline, clear liquid tank, gas phase pipe washing pump, generator, gas phase pipe, water injection pump, water injection pipeline, spray pipeline, clear liquid tank, clear liquid pump, and clear liquid overflow pipeline.

[0013] The slurry conveying pipeline, filter press pipeline, overflow pipeline, gas phase pipeline, water injection pipeline, and spray pipeline are equipped with regulating valves to adjust the water volume.

[0014] The slurry conveying pipeline, filter press pipeline, overflow pipeline, clear liquid pipeline, water injection pipeline, spray pipeline, and clear liquid overflow pipeline are equipped with inspection ports for maintenance and flushing.

[0015] The advantages of this utility model are:

[0016] This invention concentrates the slurry water used in the existing dry acetylene process, recycles the clean water, and transports the concentrated slurry to a box truck for internal and external transport after plate and frame filtration. The wastewater is ultimately used as spray water inside the generator, which allows the calcium carbide and the clean liquid inside the generator to react fully, reducing dust content from the source and improving the service life of the generator.

[0017] This invention utilizes the complete reaction of clean water and calcium carbide to achieve the recycling of slurry water, reduce wastewater discharge, solve the problem of limiting the generator's operating cycle, improve automation control, reduce the number of workers, improve the on-site working environment, reduce dust pollution, and eliminate safety hazards.

[0018] This invention uses a slurry filter pump to filter the concentrated slurry through a plate and frame filter press before discharging it. The clear liquid is then recycled back into the clear liquid tank for reuse, which can ensure the long-term continuous operation of the dry acetylene production system, reduce labor intensity, and increase work efficiency. Attached Figure Description

[0019] Figure 1 This is a block diagram of the system structure of this utility model. Detailed Implementation

[0020] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] like Figure 1 As shown, a system for extending the service life of a dry acetylene generator includes a scrubbing tower 1. The bottom of the scrubbing tower 1 is fed into the central cylinder 5 of a thickener 4 via a slurry conveying pump 2 and a slurry conveying pipeline 3. A variable frequency agitator 6 is installed inside the central cylinder 5 of the thickener 4, operating at 2-4 revolutions per minute. A slurry filter press pump 7 is connected to the lower part of the thickener 4, conveying the slurry to a plate and frame filter press 9 via a filter press pipeline 8. The clarified liquid from the plate and frame filter press 9 returns to the clarified liquid tank 19 via a clarified liquid pipeline 16. A clarified liquid pump 20 is installed next to the clarified liquid tank 19 to deliver the clarified liquid to a clarified liquid tank 11. A clarified liquid overflow pipeline 21 is installed at the top of the clarified liquid tank, leading to the clarified liquid tank 19. The thickener 4 is equipped with an overflow pipeline 10 at its top, which is connected to the top of the clarified liquid tank 11. The bottom of the clarified liquid tank 11 is pumped by a vapor phase pipe scrubbing pump 12 to the outlet vapor phase pipe DN400 14 of the generator 13. Ten sets of DN25 spray water devices 15 are added to both sides of the vapor phase pipe DN400 14. The vapor phase pipe DN400 14 is connected to the scrubbing tower 1. The bottom of the clarified liquid tank 11 is connected to the top of the acetylene generator 13 via a water injection pump 22 and a water injection pipeline 17 for reaction water supply. It is also connected to the scrubbing tower 1 via a spray pipeline 18 for top spray water supply.

[0022] Control valves are installed on the pipelines connecting the washing tower 1, slurry conveying pump 2, slurry conveying pipeline 3, thickener 4, slurry filter press pump 7, filter press pipeline 8, plate and frame filter press 9, overflow pipeline 10, clear liquid tank 11, gas phase pipe washing pump 12, acetylene generator 13, gas phase pipe DN400 14, DN25 spray water device 15, water injection pump 22, water injection pipeline 17, spray pipeline 18, clear liquid tank 19, clear liquid pump 20, and clear liquid overflow pipeline 21.

[0023] A regulating valve for adjusting the water volume is installed between the slurry conveying pipeline 3, the filter press pipeline 8, the overflow pipeline 10, the gas phase pipe DN400 14, the water injection pipeline 17, and the spray pipeline 18.

[0024] The slurry conveying pipeline 3, filter press pipeline 8, overflow pipeline 10, gas phase pipe, water injection pipeline 17, and spray pipeline 18 are all equipped with removable and flushable four-way blind covers at the bends.

[0025] Working principle:

[0026] Slurry treatment and thickening process

[0027] Slurry conveying: The slurry at the bottom of the washing tower 1 is conveyed by the slurry conveying pump 2 and enters the internal central cylinder 5 of the thickener 4 through the slurry conveying pipeline 3.

[0028] Thickening and mixing: A variable frequency agitator 6 is added to the central cylinder 5 inside the thickener 4. The speed is 2 to 4 revolutions per minute. The agitation causes the solid particles in the slurry to settle and increases the concentration of the slurry.

[0029] Slurry filtration and clear liquid recovery

[0030] Filtration process: The thickener 4 is connected to the slurry filter pump 7 at the bottom, and the thickened slurry is transported to the plate and frame filter press 9 through the filter pipeline 8.

[0031] Clarified liquid recovery: The clarified liquid filtered by the plate and frame filter press 9 returns to the clarified liquid tank 19 via the clarified liquid pipeline 16. A clarified liquid pump 20 is installed next to the clarified liquid tank 19 to transport the clarified liquid to the clarified liquid tank 11. A clarified liquid overflow pipeline 21 is installed on the top of the clarified liquid tank 11 to return excess clarified liquid to the clarified liquid tank 19.

[0032] Clear liquid circulation and spraying system

[0033] Clarified liquid circulation: The bottom of the clarified liquid tank 11 is fed by the vapor phase pipe washing pump 12 to the outlet vapor phase pipe DN400 of the acetylene generator 13. Ten sets of DN25 spray water are added on both sides of the vapor phase pipe DN400 to spray and cool the acetylene gas in the vapor phase pipe.

[0034] Spraying and washing: The DN400 gas phase pipe is connected to the washing tower. The clear liquid after spraying is recycled back into the system through the washing tower.

[0035] Water for injection and reaction

[0036] Water injection system: The bottom of the clear liquid tank 11 is connected to the top of the acetylene generator 13 via a water injection pump 22 and a water injection pipeline, serving as the reaction water for the generator. At the same time, the clear liquid is connected to the top of the scrubbing tower 1 via a spray pipeline for top spraying water.

[0037] advantage

[0038] Extend equipment lifespan

[0039] Reduced clogging: The slurry is treated by thickener 4 and plate and frame filter press 9, which reduces the amount of solid particles in the slurry entering the subsequent system and lowers the risk of clogging in pipelines and equipment.

[0040] Reduced corrosion: The clear liquid circulation system reduces the corrosion of equipment by carbide slag powder, thus extending the service life of the equipment.

[0041] Improve system stability

[0042] Optimized slurry treatment: The use of variable frequency agitator 6 ensures uniform sedimentation of slurry and improves the processing efficiency of thickener.

[0043] Stable supply of cleaning solution: The installation of cleaning solution tank 11 and cleaning solution pool 19 ensures a stable supply of cleaning solution in the system, avoiding system instability caused by insufficient cleaning solution.

[0044] Reduce operating costs

[0045] Clear liquid recycling: Clear liquid is reused multiple times through a recycling system, reducing water consumption.

[0046] Reduced maintenance frequency: Reduces blockage and corrosion in pipelines and equipment, lowering the frequency of equipment maintenance and repair costs.

[0047] Improve production efficiency

[0048] Optimize the spray system: The spray water on both sides of the DN400 gas phase pipe can effectively cool the acetylene gas and improve the operating efficiency of the acetylene generator.

[0049] Stable water supply for the reaction: The water injection pump ensures a stable supply of water for the reaction at the top of the generator, thus improving the stability of the reaction.

[0050] This invention optimizes the slurry treatment, clear liquid circulation, and spraying system, effectively reducing the clogging and corrosion of equipment by solid particles in the slurry, improving system stability and operating efficiency, reducing operating costs, and thus significantly extending the service life of the dry acetylene generator.

Claims

1. A system for extending the service life of a dry acetylene generator, characterized in that: The system includes a washing tower, a thickener, a plate and frame filter press, a clear liquid tank, a clear liquid reservoir, and an acetylene generator. The slurry outlet at the bottom of the washing tower is connected to the central cylinder of the thickener via a slurry delivery pump and a slurry delivery pipeline. The liquid outlet at the bottom of the thickener is connected to the plate and frame filter press via a slurry filter press pump and a filter press pipeline. The clear liquid outlet at the bottom of the plate and frame filter press is connected to the clear liquid tank via a clear liquid pipeline. The clear liquid tank is connected to the clear liquid reservoir via a clear liquid pump. The bottom of the clear liquid reservoir is connected to a water injection pump and a gas phase pipe washing pump. The water injection pump is connected to the inlet of the acetylene generator via a water injection pipeline. The gas phase pipe washing pump is connected to the spray inlet at the top of the washing tower and the gas phase pipe of the acetylene generator via spray pipelines. The gas phase pipe of the acetylene generator is also connected to the inlet at the bottom of the washing tower.

2. The system for extending the service life of a dry acetylene generator according to claim 1, characterized in that: The thickener's central cylinder is equipped with a variable frequency stirrer, which rotates 2-4 revolutions per minute.

3. The system for extending the service life of a dry acetylene generator according to claim 1, characterized in that: The top of the clear liquid tank is equipped with a clear liquid overflow pipeline, which is connected to the clear liquid pool.

4. The system for extending the service life of a dry acetylene generator according to claim 1, characterized in that: The thickener is equipped with an overflow pipeline at the bottom, which is connected to the clear liquid tank.

5. The system for extending the service life of a dry acetylene generator according to claim 1, characterized in that: A DN25 spray water device is provided on both sides of the gas phase pipe of the acetylene generator.

6. The system for extending the service life of a dry acetylene generator according to claim 4, characterized in that: The slurry conveying pipeline, filter press pipeline, overflow pipeline, gas phase pipeline, water injection pipeline, and spray pipeline bends are all equipped with removable and flushable four-way blind covers.

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