Organic silicon slurry and slag separation device
By designing an organic silicone slurry separation device, the solid phase and liquid phase in the organic silicone slurry slurry are separated by stirring and heating, the problem of strong corrosiveness in the reaction of silicone monomers and silicon powder with water in the slurry is solved, and the effect of efficient separation and anti-blocking of equipment is achieved.
Patent Information
- Application Number
- CN202421422636.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-06-21
AI Technical Summary
During the silicone production process, the silicone monomer and silicon powder in the slurry are prone to react with water to produce highly corrosive hydrochloric acid, and the solid phase metal silicon has a high hardness, resulting in easy wear and frequent leakage in the sealing area of the equipment.
An organic silicone slurry separation device is designed, including a slurry conveying pump, a slurry separator, a condenser and a solid phase buffer tank. The solid phase and liquid phase in the organic silicone slurry are separated by stirring and heating, and the gas-phase substance is condensed by the condenser, and the liquid phase and solid phase are separated, and buffered and transported through the solid phase buffer tank and the liquid phase buffer tank.
It has achieved efficient separation of the solid phase and liquid phase in the organic silicone slurry slag. The separated solid phase liquid content is less than 10%, has good dischargeability, does not easily clog the equipment, and the solid phase liquid content is low and there is almost no odor, laying a solid foundation for the integrated utilization of solid phase.
Smart Images
Figure CN222943111U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an organosilicon slurry-residue separation device, belonging to the technical field of chemical equipment. Background Art
[0002] During the production of organosilicon, crude monomer products are produced at the same time as slurry residues. Organosilicon slurry residues contain organosilicon monomers and silicon powder, of which the liquid phase is mainly disilane and high-boiling mixture, and the solid phase is mainly silicon powder.
[0003] Since silicone monomers react with water to produce hydrogen chloride, hydrogen chloride combines with water in the air to form hydrochloric acid, which is very corrosive. At the same time, the monomers also react with water to produce hydrolyzates and alternations, which have low flash points, are highly corrosive, and can easily clog equipment.
[0004] In the solid phase, the Mohs hardness of metallic silicon is 9.5 (the Mohs hardness of diamond is 10), which means that in industrial production, where metallic silicon exists, the seals of equipment are prone to wear and leakage.
[0005] Therefore, it is urgent to develop an organosilicon slurry separation device to solve the above technical problems. Utility Model Content
[0006] The utility model aims to provide an organosilicon slurry-residue separation device, which solves at least one of the above-mentioned technical problems.
[0007] The utility model solves the technical problem by adopting the following technical solution: an organosilicon slurry-residue separation device, comprising:
[0008] A slurry conveying pump, wherein the slurry conveying pump is used to convey the organosilicon slurry;
[0009] A slurry separator, the slurry separator is used to receive the organosilicon slurry delivered by the slurry delivery pump and separate the organosilicon slurry into solid phase matter and gas phase matter;
[0010] A condenser, which is connected to the pulp-slag separator and is used to condense gas phase substances and generate liquid phase substances;
[0011] A solid phase buffer tank is connected to the pulp-slag separator and is used to receive the solid phase material separated by the pulp-slag separator.
[0012] Optionally, the condenser is connected to a liquid phase buffer tank.
[0013] Optionally, the liquid phase buffer tank is connected to a liquid phase delivery pump, and the liquid phase delivery pump transports the liquid phase material outward. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1It is a schematic structural diagram of the organosilicon slurry-residue separation device of the utility model.
[0015] The markings in the figure are as follows: 1-slurry-residue conveying pump; 2-slurry-residue separator; 3-condenser; 4-solid phase buffer tank; 5-liquid phase conveying pump; 6-liquid phase buffer tank. DETAILED DESCRIPTION
[0016] The technical solution of the utility model is further described below in conjunction with the embodiments and drawings.
[0017] Example 1
[0018] Figure 1 It is a schematic structural diagram of the organosilicon slurry-residue separation device of the utility model.
[0019] like Figure 1 As shown, the organosilicon slurry separation device of the present invention may include a slurry conveying pump 1, a slurry separator 2, a condenser 3 and a solid phase buffer tank 4. Accordingly, the organosilicon slurry separation device of the present invention can separate the organosilicon slurry into liquid phase matter and solid phase matter.
[0020] Specifically, the slurry conveying pump 1 is used to convey silicone slurry. In this embodiment, the interior of the slurry conveying pump 1 is made of acid-resistant and wear-resistant materials, so that the slurry will not corrode and damage the slurry conveying pump during conveying. In a preferred embodiment, the slurry conveying pump 1 can be equipped with an automatic flushing system, so that the slurry conveying pump can be cleaned in time after the slurry is conveyed.
[0021] The slurry separator 2 is used to receive the organic silicon slurry delivered by the slurry delivery pump 1 and separate the organic silicon slurry into solid phase matter and gas phase matter.
[0022] Specifically, each time the organosilicon slurry is separated, about 1 ton of the organosilicon slurry can be transported to the slurry separator 2 through the slurry transport pump 1, and after the transport of the organosilicon slurry is completed, the slurry transport pump 1 stops working.
[0023] The slurry separator 2 is provided with a stirring device inside, and the stirring device can stir the organosilicon slurry, so that when the organosilicon slurry is heated, the organosilicon slurry can be kept in motion to prevent dead corners and agglomeration.
[0024] In this embodiment, the slurry separator 2 may include a jacket heat exchanger with heat transfer oil flowing inside the jacket heat exchanger. Accordingly, the silicone slurry can be heated by the heat transfer oil to a temperature of about 200-280°C, thereby utilizing the different boiling points of each liquid phase substance to evaporate the liquid phase in the silicone slurry at different temperatures to achieve solid phase separation in the slurry.
[0025] As the temperature gradually increases, the organosilicon slurry in the slurry separator 2 is gradually evaporated from the slurry separator 2 and then sent to the condenser 3. That is, the liquid phase material in the organosilicon slurry can be gasified and formed into a gas phase material, which is sent to the condenser 3.
[0026] The condenser 3 is used to condense the gas phase material discharged from the pulp-slag separator 2 and condense it into liquid phase material;
[0027] Specifically, a gas outlet is provided at the top of the pulp-residue separator 2, and the gas outlet is connected to the condenser 3. The liquid phase material condensed by the condenser 3 will be transported to the liquid phase buffer tank 6, and the non-condensable gas will be discharged to the atmosphere through the condenser 3. Preferably, the temperature of the non-condensable gas discharged to the atmosphere is controlled below 30° C. to prevent material (liquid phase material) loss.
[0028] The liquid phase buffer tank 6 is connected to a liquid phase delivery pump 5 , and the liquid phase delivery pump 5 delivers the liquid phase material to the outside, for example, to a liquid phase storage tank.
[0029] The solid phase buffer tank 4 is connected to the pulp-slag separator 2 and is used to receive the solid phase material separated by the pulp-slag separator 2 .
[0030] Specifically, when the temperature of the material in the slurry separator 2 reaches 280°C, and at the same time, the temperature of the pipeline from the top of the slurry separator 2 to the condenser 3 is less than 50°C, it indicates that the drying has been completed and the heating of the organosilicon slurry can be stopped. When the temperature of the material in the slurry separator 2 is less than 50°C, the solid phase discharge valve at the bottom of the slurry separator 2 is opened to discharge the solid phase material into the solid phase buffer tank 4.
[0031] When the solid phase material in the solid phase buffer tank 4 no longer increases, for example, the total weight of the solid phase buffer tank 4 no longer increases, the solid phase discharge valve is closed, and then nitrogen is applied to the solid phase buffer tank 4 and the pressure is increased to 0.2 MPa, and the nitrogen inlet valve is closed.
[0032] Specifically, the connecting pipeline between the slurry separator 2 and the solid phase buffer tank 4 is connected to the first nitrogen inlet pipeline, a switch valve is provided on the first nitrogen inlet pipeline, and the connection between the first nitrogen inlet pipeline and the connecting pipeline is located on the downstream side of the solid phase discharge valve of the slurry separator 2.
[0033] By circulating in this way, the solid phase and liquid phase in the organosilicon slurry can be separated continuously.
[0034] The organosilicon slurry separation rate of the organosilicon slurry separation device of the utility model is higher than that of the traditional flash separation process, and the liquid content in the solid phase after separation is less than 10%; the solid phase after separation has good discharge performance and is not easy to clog the equipment; and the solid phase has low liquid content and almost no odor, laying a solid foundation for the comprehensive utilization of the solid phase.
[0035] The order of the above embodiments is only for the convenience of description and does not represent the advantages or disadvantages of the embodiments.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. An organosilicon slurry-residue separation device, characterized in that: include: A slurry conveying pump, wherein the slurry conveying pump is used to convey the organosilicon slurry; A slurry separator, the slurry separator is used to receive the organic silicon slurry conveyed by the slurry conveying pump and separate the organic silicon slurry into solid phase matter and gas phase matter; a stirring device is provided inside the slurry separator, the stirring device is used to stir the organic silicon slurry so that when the organic silicon slurry is heated, the organic silicon slurry is always in a moving state; A condenser, which is connected to the pulp-slag separator and is used to condense gas phase substances and generate liquid phase substances; The condenser is connected to a liquid phase buffer tank, and the liquid phase buffer tank is connected to a liquid phase delivery pump, and the liquid phase delivery pump delivers the liquid phase material outward; as well as A solid phase buffer tank, which is connected to the pulp-slag separator and is used to receive the solid phase material separated by the pulp-slag separator; The slurry separator includes a jacket heat exchanger, and heat transfer oil flows inside the jacket heat exchanger; the organic silicon slurry can be heated to a temperature of about 200-280°C by the heat transfer oil; the liquid phase in the organic silicon slurry is evaporated at different temperatures to generate gas phase substances, thereby realizing the solid phase separation in the organic silicon slurry; Among them, the connecting pipeline between the pulp-slag separator and the solid phase buffer tank is connected to the first nitrogen inlet pipeline, and a switch valve is provided on the first nitrogen inlet pipeline. The connection between the first nitrogen inlet pipeline and the connecting pipeline is located on the downstream side of the solid phase discharge valve of the pulp-slag separator.