Automatic continuous deslagging device for organic silicon production

Abstract

The utility model discloses an automatic continuous deslagging device for organic silicon production, which comprises a reboiler, a flash tank, a deslagging tank and a movable slurry slag tank, the discharge port of the reboiler is connected with the feed port of the flash tank, the discharge port of the flash tank is connected with the feed port of the deslagging tank, the discharge port of the deslagging tank is connected with the movable slurry slag tank, and the discharge port of the movable slurry slag tank is connected with the flash tank. The movable slurry slag tank is connected with the emptying buffer tank; and the at least two movable slurry and slag tanks are arranged in parallel and are respectively connected with the slag discharging tank and the emptying buffer tank. Compared with the prior art, the continuous slag discharge production mode of the reboiler, the flash tank, the slag discharge tank and the movable slurry slag tanks is realized by compiling a sequence control program, and at least two movable slurry slag tanks are arranged in parallel, so that the troubleshooting process can be ensured not to be interrupted, and the labor intensity of staff and the safety risk are reduced. The slag discharge tank is provided with a density on-line monitor which is in linkage control with the temperature of the flash tank, that is, the flash temperature of the flash tank is automatically adjusted according to the pulp slag density, and the flash effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of organosilicon production, in particular to an automatic continuous slag discharge device for organosilicon production. Background Art

[0002] At present, the treatment method for sludge produced by wet dust removal in the monomer synthesis process of the silicone industry is generally intermittent, and is completed by three independent operations: reboiler slag discharge, flash tank flashing, and flash tank slag discharge. This operation requires the cooperation of the main control room personnel and on-site personnel. In order to ensure the smooth flow of the entire process, multiple valves need to be checked and confirmed, and multiple pressure charging and pressure relief operations are involved. This method of discharging sludge is cumbersome, labor-intensive, and involves the discharge of high-temperature sludge. There is a hidden danger of safety accidents such as leakage, and there are certain safety risks.

[0003] Patent CN110314400B discloses a slurry discharge device and a discharge method for silicone production. Automatic discharge of slurry is achieved by coordinating the control of various valves by a control mechanism, but continuous discharge of slurry is not achieved, and the degree of automation is still insufficient. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an automated continuous slag discharge device for organosilicon production.

[0005] In order to achieve this technical purpose, the utility model adopts the following scheme:

[0006] An automated continuous slag discharge device for organosilicon production comprises a reboiler, a flash tank, a slag discharge tank and a movable slag tank. The discharge port of the reboiler is connected to the feed port of the flash tank, the discharge port of the flash tank is connected to the feed port of the slag discharge tank, the discharge port of the slag discharge tank is connected to the movable slag tank, and the movable slag tank is connected to a venting buffer tank. At least two movable slag tanks are provided, and the movable slag tanks are arranged in parallel and respectively connected to the slag discharge tank and the venting buffer tank.

[0007] Compared with the prior art, the beneficial effects of the present invention are:

[0008] This utility model implements a continuous slag discharge production mode from reboiler to flash tank to slag discharge tank to movable slag tank by programming a sequential control program. At least two movable slag tanks are arranged in parallel, ensuring uninterrupted inspections and reducing labor intensity and safety risks. The slag discharge tank is equipped with an online density monitor, which is linked to the flash tank temperature. This means that the flash tank flash temperature is automatically adjusted based on the slag density to ensure effective flash evaporation.

[0009] Furthermore, both the reboiler and the flash tank are provided with a stirring assembly, and a feed flow meter and a feed regulating valve are provided between the reboiler and the flash tank.

[0010] Furthermore, a heating device is provided outside the flash tank, and the heating device is connected to an oil inlet pipeline and an oil return pipeline.

[0011] Furthermore, a connecting pipeline is provided between the flash tank and the slag discharge tank, a feed valve is provided on the connecting pipeline, and a purge nitrogen pipeline is connected to the connecting pipeline.

[0012] Furthermore, a pressure equalizing pipeline is provided between the flash tank and the slag discharge tank, a pressure equalizing valve is provided on the pressure equalizing pipeline, the pressure equalizing pipeline is connected to a pressurized nitrogen pipeline, and a pressurized nitrogen valve is provided on the pressurized nitrogen pipeline.

[0013] Furthermore, a density online monitor is provided in the slag discharge tank, and the density online monitor is linked to the temperature of the flash tank for control; a discharge valve is provided between the slag discharge tank and the movable slurry tank.

[0014] Furthermore, both the slag discharge tank and the movable slurry tank are provided with weight monitoring meters.

[0015] Furthermore, a venting pipeline is connected to the venting buffer tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of an automated continuous slag discharge device for organosilicon production according to an embodiment of the present utility model;

[0017] Marked in the figure: 1. Reboiler; 2. Feed flow meter; 3. Feed regulating valve; 4. Flash tank; 501. Return oil pipeline; 502. Oil feed pipeline; 6. Pressure equalizing valve; 7. Nitrogen purge pipeline; 8. Feed valve; 9. Pressurized nitrogen valve; 10. Slag discharge tank; 11. Density online monitor; 12. Discharge valve; 13. Movable slurry tank; 1301. First movable slurry tank; 1302. Second movable slurry tank; 14. Vent buffer tank. DETAILED DESCRIPTION

[0018] In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific implementation methods, but the present invention is not limited thereto.

[0019] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” or “laid on” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0020] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0022] See also Figure 1 The utility model provides an automated continuous slag discharge device for organosilicon production, comprising a reboiler 1, a flash tank 4, a slag discharge tank 10, a movable slurry tank 13 and an emptying buffer tank 14 connected in sequence.

[0023] Both reboiler 1 and flash tank 4 are equipped with stirring assemblies: reboiler 1 uses a paddle stirrer, while flash tank 4 uses an anchor stirrer. The discharge port of reboiler 1 is connected to the feed port of flash tank 4. A feed flowmeter 2 and a feed regulating valve 3 are installed between reboiler 1 and flash tank 4. Logical control is implemented between feed flowmeter 2 and feed regulating valve 3, setting the feed flow rate to flash tank 4 and automatically adjusting it via feed regulating valve 3 to achieve continuous feeding of flash tank 4. A heating device is installed on the outside of flash tank 4, connected to the oil inlet line 502 and the oil return line 501. The discharge port of the flash tank 4 is connected to the feed port of the slag discharge tank 10 via a connecting pipeline, which is provided with a feed valve 8 and a purge nitrogen pipeline 7. A pressure equalizing pipeline is also provided between the flash tank 4 and the slag discharge tank 10, which is provided with a pressure equalizing valve 6, which is connected to a pressurized nitrogen pipeline, which is provided with a pressurized nitrogen valve 9. An online density monitor 11 is provided in the slag discharge tank 10, and the online density monitor 11 is interlocked with the temperature of the flash tank 4. The discharge port of the slag discharge tank 10 is connected to a movable slag tank 13, and a discharge valve 12 is provided between the slag discharge tank 10 and the movable slag tank 13. Both the slag discharge tank 10 and the movable slag tank 13 are provided with weight monitoring meters. At least two movable slurry tanks 13 are provided, and the movable slurry tanks 13 are connected to the venting buffer tank 14, and the venting buffer tank 14 is connected to the large system through a venting pipeline. The large system is a process specifically for collecting and processing vented gas. The vented gas from the venting buffer tank 14 is discharged into the large system, and no environmental hazards will be generated.

[0024] In this embodiment, the movable slurry tank 13 includes a first movable slurry tank 1301 and a second movable slurry tank 1302 arranged in parallel. The first movable slurry tank 1301 and the second movable slurry tank 1302 are connected to the slag discharge tank 10 and the emptying buffer tank 14 respectively.

[0025] The production method implemented by the utility model of the automated continuous slag discharge device for organosilicon production is as follows:

[0026] 1. The dust-laden liquid discharged from the bottom of the reboiler 1 is measured by the feed flowmeter 2 and logically controlled by the feed regulating valve 3 to enter the flash tank 4, thereby ensuring the continuity of the feed to the flash tank 4. The flash tank 4 is heated by thermal oil, and the flash temperature is adjusted by controlling the flow of the oil inlet pipeline 502 and the oil return pipeline 501. The flash temperature of the flash tank 4 is linked to the density online monitor 11 in cascade control, that is, the flash temperature of the flash tank 4 is automatically adjusted by the pulp residue density.

[0027] 2. When the flash tank 4 discharges slag into the slag discharge tank 10, the nitrogen charging valve 9 is closed, the pressure equalizing valve 6 and the feed valve 8 are open. When the preset weight of the slag discharge tank 10 is reached, the feed valve 8 is automatically closed. The preset weight range of the slag discharge tank 10 is 300~800Kg.

[0028] 3. After the feed valve 8 is automatically closed, the pressure equalizing valve 6 is closed synchronously, and the nitrogen charging valve 9 is opened to pressurize the slag discharge tank 10 to ≥0.6MPa and then automatically close. At this time, the slag discharge tank 10 is ready for slag discharge;

[0029] Fourth, the discharge valve 12 automatically opens and discharges the slag into the first movable slurry tank 1301 set in the program. When one of the following conditions occurs: the pressure of the slag tank 10 is ≤ 0.01 MPa, the weight of the slag tank 10 is ≤ 50 kg, or the first movable slurry tank 1301 reaches the preset weight, the slag discharge operation of the slag tank 10 stops, and the discharge valve 12 is automatically closed;

[0030] 5. If the pressure of the slag discharge tank 10 is ≤ 0.01 MPa, but the weight of the slag discharge tank 10 is > 50 kg and the first movable slurry tank 1301 has not reached the preset weight, repeat step 4;

[0031] 6. When the weight of the slag discharge tank 10 is ≤50Kg and the discharge valve 12 is automatically closed, repeat step 3;

[0032] 7. When the first movable slurry tank 1301 reaches a preset weight and automatically closes the discharge valve 12, the program alarm prompts the operator to switch the movable slurry tank 13 to the second movable slurry tank 1302;

[0033] 8. The movable slurry tank 13 is connected to the emptying buffer tank 14, which will not cause environmental hazards.

[0034] The valve of the nitrogen purge pipeline 7 in the utility model is normally open, and the flow rate is controlled at 5~30Nm 3 When the feed valve 8 is opened, it is helpful for normal slag discharge; when the feed valve 8 is closed, it can avoid clogging of the slag discharge pipe.

[0035] Finally, it should be noted that the above-listed examples are only preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and modifications fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. An automated continuous slag discharge device for organosilicon production, comprising a reboiler (1), a flash tank (4), a slag discharge tank (10) and a movable slag tank (13), characterized in that: The discharge port of the reboiler (1) is connected to the feed port of the flash tank (4), the discharge port of the flash tank (4) is connected to the feed port of the slag discharge tank (10), the discharge port of the slag discharge tank (10) is connected to the movable slag tank (13), and the movable slag tank (13) is connected to the emptying buffer tank (14); at least two movable slag tanks (13) are provided, and the movable slag tanks (13) are provided in parallel and are respectively connected to the slag discharge tank (10) and the emptying buffer tank (14).

2. The automated continuous slag discharge device for organosilicon production according to claim 1, characterized in that: The reboiler (1) and the flash tank (4) are both provided with a stirring assembly, and a feed flow meter (2) and a feed regulating valve (3) are provided between the reboiler (1) and the flash tank (4).

3. The automated continuous slag discharge device for organosilicon production according to claim 1, characterized in that: A heating device is provided outside the flash tank (4), and the heating device is connected to an oil inlet pipeline (502) and an oil return pipeline (501).

4. The automated continuous slag discharge device for organosilicon production according to claim 1, characterized in that: A connecting pipeline is provided between the flash tank (4) and the slag discharge tank (10), a feed valve (8) is provided on the connecting pipeline, and a purge nitrogen pipeline (7) is connected to the connecting pipeline.

5. The automated continuous slag discharge device for organosilicon production according to claim 1, characterized in that: A pressure equalizing pipeline is provided between the flash tank (4) and the slag discharge tank (10), a pressure equalizing valve (6) is provided on the pressure equalizing pipeline, and a pressurized nitrogen pipeline is connected to the pressure equalizing pipeline, and a pressurized nitrogen valve (9) is provided on the pressurized nitrogen pipeline.

6. The automated continuous slag discharge device for organosilicon production according to claim 1, characterized in that: A density online monitor (11) is provided in the slag discharge tank (10), and the density online monitor (11) is interlocked with the temperature of the flash tank (4); a discharge valve (12) is provided between the slag discharge tank (10) and the movable slurry tank (13).

7. The automated continuous slag discharge device for organosilicon production according to claim 1, characterized in that: The slag discharge tank (10) and the movable slurry tank (13) are both provided with weight monitoring meters.

8. The automated continuous slag discharge device for organosilicon production according to claim 1, characterized in that: The venting buffer tank (14) is connected to a venting pipeline.

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