Rinsing device for a fluidized bed of silicone u-tube bed cores

Abstract

The utility model provides a kind of flushing device of organic silicon U-shaped tube fluidized bed core, including fluidized bed shell, fluidized bed core, high-pressure cleaning device and circulating water system;The outlet of high-pressure cleaning device is connected to the temperature measuring point pipe orifice of fluidized bed shell by flange, for from temperature measuring point pipe orifice to fluidized bed core jet high-pressure water flow and flush;Circulating water system includes water washing sedimentation tank, pump inlet filter, water washing circulating pump and circulating water heater connected in turn, the shell side outlet of circulating water heater is connected with the import of high-pressure cleaning device, and water washing sedimentation tank is used to provide flushing water;Avoid the security risk and the problem of great labor intensity of traditional manual cleaning, also recycling flushing water is realized through circulating water system, greatly reduce sewage discharge, meet environmental protection requirement, with significant economic benefit and environmental benefit.

Description

Technical Field

[0001] This utility model belongs to the field of fluidized bed technology for organosilicon monomer synthesis, specifically relating to a flushing device for the core of an organosilicon U-shaped tube fluidized bed. Background Technology

[0002] Organosilicon materials have significant applications in automotive manufacturing, defense technology, and industrial engineering due to their unique thermal stability, low surface tension, and excellent insulation properties. Industrially, methylchlorosilanes are mainly synthesized via direct methods, with fluidized bed processes being widely adopted due to their advantages such as high chloromethane conversion and low energy consumption.

[0003] Compared to traditional finger-shaped fluidized beds, U-shaped tube fluidized beds have a denser tube bundle structure, which improves production efficiency but also brings many technical challenges. Due to the dense tube bundle distribution, the gas-solid phase fluid in the reaction zone is prone to uneven distribution, leading to localized overheating and causing severe scaling and sintering problems within the bed core. Traditional manual cleaning methods not only require operators to handle high-pressure equipment, posing significant safety risks, but are also labor-intensive and have long cleaning cycles. Furthermore, existing cleaning methods generate large amounts of rinsing wastewater, failing to meet increasingly stringent environmental protection requirements. Although patents disclose related cleaning devices, they are only suitable for small fluidized beds and cannot meet the cleaning needs of large-scale organosilicon U-shaped tube fluidized beds, and still rely on manual operation.

[0004] These technological bottlenecks severely restrict the equipment operating efficiency and economic benefits of organosilicon production enterprises, and there is an urgent need to develop a new U-shaped tube fluidized bed core cleaning technology solution that is efficient, safe and environmentally friendly. Utility Model Content

[0005] This invention provides a flushing device for the core of an organosilicon U-tube fluidized bed, which solves the problems of excessive flushing wastewater, high labor intensity, and long cleaning cycle in the prior art when cleaning large organosilicon U-tube fluidized beds.

[0006] This utility model provides a flushing device for the core of an organosilicon U-shaped tube fluidized bed, including a fluidized bed shell, a fluidized bed core, a high-pressure cleaning device, and a circulating water system;

[0007] The outlet of the high-pressure cleaning device is connected to the temperature measuring point port of the fluidized bed shell via a flange, which is used to spray high-pressure water jets from the temperature measuring point port into the fluidized bed core for rinsing.

[0008] The circulating water system includes a water washing sedimentation tank, a pump inlet filter, a water washing circulating pump, and a circulating water heater connected in sequence. The shell-side outlet of the circulating water heater is connected to the inlet of the high-pressure cleaning device. The water washing sedimentation tank is used to provide rinsing water.

[0009] Compared with existing technologies, the advantages of this invention are as follows: By connecting the high-pressure cleaning device to the existing temperature measuring point port of the fluidized bed shell, efficient cleaning is achieved by cleverly utilizing the existing structure of the equipment, solving the cleaning problem caused by the dense tube bundles in the U-shaped tube fluidized bed core; this design not only avoids the safety hazards and high labor intensity of traditional manual cleaning, but also realizes the recycling of flushing water through the circulating water system, significantly reducing wastewater discharge; combined with hot water flushing provided by the circulating water heater, it can effectively dissolve the sintered materials in the bed core, significantly improving cleaning efficiency; the entire device has a reasonable structure, is easy to operate, can significantly shorten the fluidized bed shutdown cleaning time, improve production efficiency, and meet environmental protection requirements, thus having significant economic and environmental benefits.

[0010] Furthermore, the outlet of the high-pressure cleaning device is connected to an insert nozzle, with the water outlet direction being horizontal and downward at an angle.

[0011] Furthermore, the connecting pipeline between the outlet of the high-pressure cleaning device and the temperature measuring point port of the fluidized bed shell is a flanged, temperature- and pressure-resistant metal flexible hose.

[0012] Furthermore, the tube inlet of the circulating water heater is connected to the steam pipeline for heating the circulating water.

[0013] Furthermore, the circulating water heater is equipped with a steam regulating valve and a bypass manual valve at the tube inlet, and a steam trap at the tube outlet.

[0014] Furthermore, a remote thermometer is installed at the shell-side outlet of the circulating water heater, and the remote thermometer is linked with the steam regulating valve to control the water temperature.

[0015] Furthermore, the pump inlet filter is a detachable basket filter with a filter screen, and the inlet of the pump inlet filter is a polypropylene insert tube structure.

[0016] Furthermore, the upper part of the fluidized bed shell is connected to the upper end cap of the fluidized bed via a flange, and the lower part is connected to the lower end cap of the fluidized bed via a flange. The fluidized bed core is fixedly connected to the upper end cap of the fluidized bed.

[0017] Furthermore, it also includes overhead cranes for hoisting and rotating the fluidized bed heads and fluidized bed cores.

[0018] Furthermore, the overhead crane is a rotatable and lifting crane that can be controlled remotely. Attached Figure Description

[0019] Figure 1 This is a flushing device for the core of an organosilicon U-shaped tube fluidized bed in one embodiment of the present invention;

[0020] Figure 2 This is the water outlet direction of the insert nozzle in one embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Overhead crane; 2. Fluidized bed head; 3. Fluidized bed core; 4. Fluidized bed shell; 5. Fluidized bed bottom head; 6. High-pressure cleaning device; 7. Circulating water heater; 8. Water washing circulation pump; 9. Pump inlet filter; 10. Water washing settling tank. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Please see Figures 1-2 In one embodiment, the flushing device for the silicone U-tube fluidized bed core 3 includes a crane 1, a fluidized bed head 2, a fluidized bed core 3, a fluidized bed shell 4, a fluidized bed lower head 5, a high-pressure cleaning device 6, a circulating water heater 7, a water washing circulating pump 8, a pump inlet filter 9, and a water washing settling tank 10.

[0025] The upper part of the fluidized bed shell 4 is connected to the upper end cap 2 via a flange, and the lower part is connected to the lower end cap 5 via a flange. The U-shaped tube fluidized bed core 3 is fixedly connected to the upper end cap 2 as an integral structure. It is also equipped with a rotatable and lifting crane 1, which can be remotely controlled.

[0026] During use, after the fluidized bed cycle shutdown process replacement in the monomer synthesis step is qualified, remove the flange bolts of the fluidized bed upper end cap 2, the fluidized bed lower end cap 5, and the fluidized bed shell 4. Move the fluidized bed lower end cap 5 to an empty position, and connect the overhead crane 1 to the fluidized bed upper end cap 2. Remove the temperature measuring instrument from the fluidized bed shell 4, and connect the outlet of the high-pressure cleaning device 6 to the temperature measuring point port of the fluidized bed shell 4 through a flanged temperature-resistant and pressure-resistant metal hose. An insert nozzle is provided at the connection, and the nozzle water outlet direction is set to horizontal and obliquely downward. The layout of the circulating water system includes: inserting the polypropylene insert pipe of the pump inlet filter 9 into the water washing sedimentation tank 10 to a depth of 60-80cm. This filter adopts a detachable basket structure with a filter screen; connect the water washing circulating pump 8 and the circulating water heater 7 to the high-pressure cleaning device 6 in sequence. The inlet of the circulating water heater 7 is connected to the steam pipeline and equipped with a steam regulating valve, a bypass manual valve, and a steam trap.

[0027] First, check the sealing of all flange connections to ensure the system is airtight. Then, start the water washing circulation pump 8 and control the outlet pressure of the high-pressure cleaning device 6 to maintain it within the range of 50-60 MPa. Precisely control the outlet water temperature of the circulating water heater 7 shell side to be between 65-75℃ using a steam regulating valve. This temperature is monitored in real-time by a remote thermometer at the shell side outlet and is linked to the steam regulating valve for adjustment. Simultaneously, start the remote control system of the overhead crane 1, driving the head 2 and the U-shaped fluidized bed core 3 on the fluidized bed to rotate slowly. This allows high-pressure hot water to form a mesh-like flushing flow through the insertion nozzles, continuously flushing for 10-12 hours.

[0028] During system operation, clean the filter screen of pump inlet filter 9 every 2 hours to maintain system patency. After flushing, shut down the system following the procedure of first closing the steam valve, then allowing the system to cool down before stopping the pump. Finally, disconnect the connecting pipelines and restore the original instruments at the temperature measuring points.

[0029] The flushing device of the organosilicon U-tube fluidized bed core of this utility model was used for flushing, and the waste contact material after flushing was collected, weighed, recorded, and calculated. The efficiency was compared with that of traditional manual flushing. The statistical results are shown in Table 1.

[0030] Table 1

[0031]

[0032] This method, through innovative temperature measurement point connection design and intelligent temperature control system, combined with fully enclosed circulating water treatment, not only solves the cleaning problem of dense U-shaped tube bundles, but also achieves efficient, safe and environmentally friendly cleaning results, reducing wastewater discharge by more than 85%, increasing cleaning efficiency by 3 times, and controlling fluidized bed shutdown cleaning time to within 12 hours.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. If these modifications and variations fall within the scope of the claims of this utility model and their equivalents, they should be considered to be within the protection scope of this utility model.

Claims

1. A flushing device for the core of an organosilicon U-shaped tube fluidized bed, characterized in that, Includes fluidized bed shell, fluidized bed core, high-pressure cleaning device and circulating water system; The outlet of the high-pressure cleaning device is connected to the temperature measuring point port of the fluidized bed shell via a flange, which is used to spray high-pressure water jets from the temperature measuring point port into the fluidized bed core for rinsing. The circulating water system includes a water washing sedimentation tank, a pump inlet filter, a water washing circulating pump, and a circulating water heater connected in sequence. The shell-side outlet of the circulating water heater is connected to the inlet of the high-pressure cleaning device. The water washing sedimentation tank is used to provide rinsing water.

2. The flushing device for the core of the organosilicon U-shaped tube fluidized bed according to claim 1, characterized in that, The outlet of the high-pressure cleaning device is connected to an insert nozzle, and the water outlet direction of the nozzle is horizontal and downward at an angle.

3. The flushing device for the core of the organosilicon U-shaped tube fluidized bed according to claim 1, characterized in that, The connecting pipeline between the outlet of the high-pressure cleaning device and the temperature measuring point port of the fluidized bed shell is a flanged, temperature- and pressure-resistant metal flexible hose.

4. The flushing device for the core of the organosilicon U-shaped tube fluidized bed according to claim 1, characterized in that, The tube inlet of the circulating water heater is connected to the steam pipeline to heat the circulating water.

5. The flushing device for the core of the organosilicon U-shaped tube fluidized bed according to claim 4, characterized in that, The circulating water heater is equipped with a steam regulating valve and a bypass manual valve at the inlet of the tube side, and a steam trap at the outlet of the tube side.

6. The flushing device for the core of the organosilicon U-shaped tube fluidized bed according to claim 5, characterized in that, The shell-side outlet of the circulating water heater is equipped with a remote thermometer, which is linked with the steam regulating valve to control the water temperature.

7. The flushing device for the core of the organosilicon U-shaped tube fluidized bed according to claim 1, characterized in that, The pump inlet filter is a detachable basket filter with a filter screen, and the inlet of the pump inlet filter is a polypropylene insert tube structure.

8. The flushing device for the organosilicon U-shaped tube fluidized bed core according to any one of claims 1-7, characterized in that, The upper part of the fluidized bed shell is connected to the upper end cap of the fluidized bed via a flange, and the lower end cap of the fluidized bed is connected to the lower end cap of the fluidized bed via a flange. The fluidized bed core is fixedly connected to the upper end cap of the fluidized bed.

9. The flushing device for the core of the organosilicon U-shaped tube fluidized bed according to claim 8, characterized in that, It also includes overhead cranes for hoisting and rotating the fluidized bed heads and fluidized bed cores.

10. The flushing device for the core of the organosilicon U-shaped tube fluidized bed according to claim 9, characterized in that, The overhead crane is a rotatable and lifting crane that can be controlled remotely.

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