Efficient closed hydrolysis and resource recycling system of silicone slurry

Abstract

The application discloses a kind of efficient closed hydrolysis and resource recycling system of organic silicon slurry residue, belong to organic silicon waste treatment field.System includes three-partition closed hydrolysis kettle, pre-separation bin, filter water device, acid water pool, heat exchanger, acid gas recovery device, online component analysis and control system.Reaction material is organic silicon slurry residue and hydrochloric acid aqueous solution, hydrolysis generates silicon dioxide solid residue, HCl gas and dilute hydrochloric acid;The application is by pre-reaction-main reaction-depth reaction three-partition gradient hydrolysis, so that organic silicon residual amount <0.5%;HCl recovery rate is ≥95%, acid water closed loop recovery rate 96%, energy consumption is reduced by more than 40% compared with traditional process, equipment life is extended to more than 8 years.The application solves the problems of existing process, such as incomplete hydrolysis, resource waste, high energy consumption, easy corrosion and other problems, realizes closed no leakage, efficient hydrolysis, full resource recovery, low energy consumption operation, environmental protection and economic benefits are remarkable.

Description

Technical Field

[0001] This invention relates to the field of organosilicon production waste treatment technology, and in particular to an efficient closed-loop hydrolysis and resource recycling system for organosilicon slurry residue. Background Technology

[0002] The production of organosilicon generates a large amount of organosilicon slurry waste. Improper handling of this waste not only wastes resources but also causes serious environmental pollution. Currently, some closed-loop hydrolysis equipment has emerged in the industry, but existing closed-loop hydrolysis processes still have many key drawbacks: First, hydrolysis reactors often use a single reaction zone design, resulting in incomplete hydrolysis of the slurry and high levels of residual organosilicon (typically 1.5-2%). Second, they only achieve leak-proof sealing of acidic gases, without resource recovery of HCl gas, leading to severe resource waste. Third, fixed reaction parameters cannot be adapted to different batches of slurry, resulting in poor production stability. Fourth, the inner walls of the equipment are susceptible to acid corrosion, resulting in a short service life (only 3-5 years). Fifth, the solid-liquid separation load is high, the acid water recovery rate is low, and the waste heat from the reaction is not utilized, leading to high energy consumption.

[0003] Based on the shortcomings of the existing technologies, there is an urgent need to develop a processing system that integrates "high-efficiency closed hydrolysis, acid gas resource utilization, intelligent adaptive control, and low-energy operation" to comprehensively solve the technical pain points of the existing closed hydrolysis process. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a highly efficient, closed-loop hydrolysis and resource recycling system for organosilicon slurry residue, achieving complete hydrolysis of the slurry residue, zero discharge of pollutants, full recovery of resources, and low-energy operation.

[0005] To achieve this technical objective, the present invention adopts the following solution: A high-efficiency, closed-loop hydrolysis and resource recycling system for organosilicon slurry residue includes a hydrolysis reactor, a pre-separation chamber, a filtration device, a closed belt conveyor, a transfer storage yard, an acid water tank, an acid water pump, a heat exchanger, an acid gas recovery device, an online component analysis module, and a control system. The hydrolysis reactor has a multi-zone closed structure, with a pre-reaction zone, a main reaction zone, and a deep reaction zone sequentially arranged along the material flow direction. These zones are separated by guide plates with material channels. The top of the hydrolysis reactor has a feed inlet and a closed gas collection channel, while the bottom has a discharge outlet connected to the pre-separation chamber. The pre-separation chamber is connected to the filtration device. The device is equipped with a solid slag outlet and an acid water outlet. The solid slag outlet is connected to a closed belt conveyor, which is connected to a transfer storage yard. The acid water outlet is connected to an acid water tank, which is connected to a heat exchanger via an acid water pump. The heat exchanger is connected to the feed inlet of the hydrolysis reactor. The closed gas collection channel of the hydrolysis reactor is connected to an acid gas recovery device, which is connected to a hydrochloric acid preparation tank and an organosilicon raw material pretreatment process. The control system is electrically connected to the hydrolysis reactor, pre-separation chamber, water filtration device, closed belt conveyor, acid water pump, heat exchanger, acid gas recovery device, online component analysis module, and acid water tank.

[0006] Furthermore, the inner wall of the hydrolysis vessel is coated with a titanium alloy-polytetrafluoroethylene composite coating with a thickness of 0.8~1.2mm. The hydrolysis vessel is equipped with a temperature regulating device and a pressure monitoring device, both of which are electrically connected to the control system. The top of the hydrolysis vessel is also equipped with an automatic overpressure relief valve with a safety threshold set at 0.35MPa.

[0007] Furthermore, the hydrolysis reactor adopts a jacketed design and is equipped with an electric heating jacket and cooling coils. The temperature control range of the pre-reaction zone of the hydrolysis reactor is 20~40℃ and the pressure is 0.05~0.1MPa; the temperature control range of the main reaction zone is 30~50℃ and the pressure is 0.2~0.3MPa. The main reaction zone is equipped with a variable frequency stirrer with an adjustable stirring speed of 50~200r / min. The main reaction zone is used for the hydrolysis of organosilicon main chain. The temperature control range of the deep reaction zone is 40~60℃ and the pressure is 0.05~0.2MPa. It is used for the deep decomposition of residual organosilicon. The three zones work together to reduce the residual organosilicon content to below 0.5%.

[0008] To precisely control the pressure in the three zones, flow guides with flow-limiting orifices are installed between them. The cavities are not closed, and the media are kept interconnected, with pressure differences created by flow resistance. The pre-reaction zone is equipped with a low-pressure stabilizing valve, the main reaction zone with a medium-pressure stabilizing valve, and the deep reaction zone with an adaptive pressure regulating valve. Each zone has a set target pressure, and the interconnected cavities achieve zone pressure locking through valve back pressure.

[0009] To precisely control the temperature of the three zones, each of the three sections of the vessel is equipped with an independent cooling water / heating medium jacket, with its own temperature control circuit, and there is no cross-temperature between them.

[0010] Furthermore, the pre-separation chamber is equipped with high-speed rotating guide vanes with a rotation speed of 500~800 r / min, which are used to separate large solid particles with a particle size ≥1mm. The bottom of the pre-separation chamber is equipped with an acid water return channel, which is connected to the acid water tank. The returned acid water is filtered by a precision filtration unit and then continues to participate in the circulation.

[0011] Furthermore, the water filtration device adopts a plate and frame filter press or a vacuum filter, with a filtration accuracy of 50~200 mesh.

[0012] Furthermore, the discharge end of the enclosed belt conveyor extends above the transfer yard, and a dust cover is installed on the outside of the conveying channel.

[0013] Furthermore, the acid water tank is equipped with a liquid level monitoring device and a precision filtration unit. The acid water tank → acid water pump → heat exchanger → hydrolysis reactor inlet form a closed-loop acid water circulation system.

[0014] Furthermore, the heat exchanger adopts a shell-and-tube heat exchanger, which utilizes the waste heat from the hydrolysis reactor to achieve heat exchange linkage.

[0015] Furthermore, the acid gas recovery device includes an adsorption-desorption unit and a gas diversion valve. The adsorption-desorption unit is filled with columnar activated carbon, with a desorption vapor pressure of 0.4 MPa and a desorption temperature of 120°C. After purification, the HCl gas concentration is ≥90%. The acid gas recovery device is connected to a hydrochloric acid preparation tank and an organosilicon raw material pretreatment process. Part of the recovered acid gas is used for hydrochloric acid preparation, and part is used for organosilicon raw material pretreatment, realizing resource recycling.

[0016] Furthermore, the online component analysis module is connected to the main reaction zone of the hydrolysis reactor, with a detection frequency of 1 time / 5min and a detection accuracy of ±0.1%, used for real-time detection of residual organosilicon and the mass fraction of HCl in the slurry.

[0017] The workflow of the efficient closed hydrolysis and resource recycling system for organosilicon slurry slag of the present invention is as follows: organosilicon slurry slag and hydrochloric acid aqueous solution (including circulating acid water and replenishing hydrochloric acid) enter the hydrolysis kettle through the feed inlet and carry out hydrolysis reaction in the hydrolysis kettle. The silicon-carbon bond and silicon-oxygen bond of organosilicon break under acidic conditions to generate silica-based solid slag, hydrogen chloride (HCl) gas and dilute hydrochloric acid aqueous solution. The organosilicon components are completely decomposed through a three-zone gradient reaction.

[0018] The hydrolysis reactor has a multi-zone closed structure. Inside, along the material flow direction, there are a pre-reaction zone, a main reaction zone, and a deep reaction zone, which are separated by a baffle plate with material channels. The pre-reaction zone is at low temperature and low pressure, where the slurry swells and the surface groups of organosilicon are initially hydrolyzed, reducing the resistance to subsequent reactions. The main reaction zone is at medium temperature and medium pressure with enhanced stirring, where a large number of organosilicon main chains are broken and the core components are rapidly decomposed. The deep reaction zone is at high temperature and slightly positive pressure, where residual small organosilicon molecules are completely hydrolyzed, resulting in a residual organosilicon content of <0.5%.

[0019] The HCl gas and water vapor generated by the hydrolysis reaction enter the acid gas recovery unit through a closed gas collection channel. After purification by the adsorption-desorption unit, the high-purity HCl gas is diverted to the hydrochloric acid preparation tank or the raw material pretreatment process, realizing resource recycling.

[0020] The hydrolysis reaction liquid-slag mixture enters the pre-separation chamber through the discharge port, where large solid particles (≥1mm) are separated by centrifugation. The pre-separated slurry enters the water filtration device (plate and frame filter press or vacuum filter) to achieve complete solid-liquid separation. The solid slag is conveyed to the transfer storage yard via a closed belt conveyor; the acid water enters the acid water tank, and after precision filtration, it is pumped to the heat exchanger.

[0021] The heat exchanger uses the waste heat from the hydrolysis vessel to preheat / cool the acid water, and after adjusting it to a suitable temperature, it is circulated back to the hydrolysis vessel to achieve energy cascade utilization.

[0022] The online component analysis module detects the residual amount of organosilicon and the concentration of acid water in real time. The control system automatically adjusts the temperature, pressure and feed rate based on the data to ensure batch stability (fluctuation ≤ ±0.2%).

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention employs a three-zone hydrolysis reactor with intelligent control, reducing residual organosilicon to 0.35%, far superior to traditional processes (1.6~2.2%). Through online monitoring and adaptive adjustment, batch fluctuations are ≤±0.2%. The acid water cycle—from the acid water tank to the acid water pump, heat exchanger, and finally the hydrolysis reactor—achieves a 96% recovery rate, significantly reducing the consumption of fresh water and hydrochloric acid. Waste heat from the hydrolysis reactor is used in the heat exchanger for precise temperature control, reducing emissions by 39.3% compared to traditional single-zone systems and by 54.4% compared to open systems. The fully enclosed circulation system recovers generated acidic gases, achieving leak-free, dust-free, and fully resource-efficient solid-liquid-gas processes. A composite coating inside the hydrolysis reactor extends its service life to 8~10 years. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the efficient closed hydrolysis and resource recycling system for organosilicon slurry residue in an embodiment of the present invention.

[0025] The diagram is labeled as follows: 1. Hydrolysis reactor; 101. Pre-reaction zone; 102. Main reaction zone; 103. Deep reaction zone; 111. Feed inlet; 112. Sealed gas collection channel; 113. Discharge outlet; 2. Pre-separation chamber; 3. Water filtration device; 31. Solid residue outlet; 32. Acid water outlet; 4. Sealed belt conveyor; 41. Dust cover; 5. Transfer yard; 6. Acid water pool; 61. Liquid level monitoring device; 62. Precision filtration unit; 7. Acid water pump; 8. Heat exchanger; 9. Acid gas recovery device; 91. Adsorption-desorption unit; 92. Gas diversion valve; 10. Online component analysis module; 11. Hydrochloric acid preparation tank. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0027] Unless otherwise specified, the experimental methods used in the embodiments and comparative examples of this invention are conventional methods. Unless otherwise specified, the materials and reagents used are commercially available.

[0028] Please see Figure 1 This invention provides a high-efficiency closed-loop hydrolysis and resource recycling system for organosilicon slurry residue, including a hydrolysis reactor 1, a pre-separation chamber 2, a water filtration device 3, a closed belt conveyor 4, a transfer storage yard 5, an acid water tank 6, an acid water pump 7, a heat exchanger 8, an acid gas recovery device 9, an online component analysis module 10, and a control system. The hydrolysis reactor 1 has a multi-zone closed structure, with a pre-reaction zone 101, a main reaction zone 102, and a deep reaction zone 103 arranged sequentially along the material flow direction. The zones are separated by guide plates with material channels. The top of the hydrolysis reactor 1 has a feed inlet 111 and a closed gas collection channel 112, and the bottom has a discharge outlet 113. The discharge outlet 113 is connected to the pre-separation chamber 2, and the pre-separation chamber 2 is connected to the water filtration device 3. The filtration device 3 is equipped with a solid residue outlet 31 and an acid water outlet 32. The solid residue outlet 31 is connected to a closed belt conveyor 4, which is connected to a transfer storage yard 5. The acid water outlet 32 ​​is connected to an acid water tank 6. The acid water tank 6 is connected to a heat exchanger 8 via an acid water pump 7. The heat exchanger 8 is connected to the feed inlet 111 of the hydrolysis reactor 1. The closed gas collection channel 112 of the hydrolysis reactor 1 is connected to an acid gas recovery device 9. The acid gas recovery device 9 is connected to a hydrochloric acid preparation tank 11 and an organosilicon raw material pretreatment process. The control system is electrically connected to the hydrolysis reactor 1, the pre-separation chamber 2, the filtration device 3, the closed belt conveyor 4, the acid water pump 7, the heat exchanger 8, the acid gas recovery device 9, the online component analysis module 10, and the acid water tank 6.

[0029] In one specific embodiment, the inner wall of the hydrolysis vessel 1 is provided with a titanium alloy-polytetrafluoroethylene composite coating with a coating thickness of 0.8~1.2mm. The hydrolysis vessel 1 is provided with a temperature regulating device and a pressure monitoring device, both of which are electrically connected to the control system. The top of the hydrolysis vessel 1 is also provided with an overpressure automatic pressure relief valve with a safety threshold set at 0.35MPa.

[0030] In one specific embodiment, the hydrolysis reactor 1 adopts a jacketed design and is equipped with an electric heating jacket and a cooling coil; the temperature control range of the pre-reaction zone 101 of the hydrolysis reactor 1 is 20~40℃ and the pressure is 0.05~0.1MPa; the temperature control range of the main reaction zone 102 is 30~50℃ and the pressure is 0.2~0.3MPa. The main reaction zone 102 is equipped with a variable frequency stirrer with an adjustable stirring rate of 50~200r / min. The main reaction zone 102 is used for the hydrolysis of organosilicon main chain breakage; the temperature control range of the deep reaction zone 103 is 40~60℃ and the pressure is 0.05~0.2MPa. It is used for the deep decomposition of residual organosilicon; the three zones work together to reduce the residual organosilicon content to below 0.5%.

[0031] To precisely control the pressure in the three zones, guide plates with flow-limiting orifices are installed between them. The cavities are not sealed, allowing for media exchange, and pressure differentials are created by flow resistance. The pre-reaction zone 101 is equipped with a low-pressure stabilizing valve, the main reaction zone 102 with a medium-pressure stabilizing valve, and the deep reaction zone 103 with an adaptive pressure regulating valve. Each zone has a set target pressure, and the interconnected cavities achieve zone pressure locking through valve back pressure.

[0032] To precisely control the temperature of the three zones, each of the three sections of the vessel is equipped with an independent cooling water / heating medium jacket, with its own temperature control circuit, and there is no cross-temperature between them.

[0033] Furthermore, the pre-separation chamber 2 is equipped with high-speed rotating guide vanes with a rotation speed of 500~800 r / min, which are used to separate large solid particles with a particle size ≥1mm; the bottom of the pre-separation chamber 2 is equipped with an acid water return channel and is connected to the acid water tank 6. The acid water separated by the pre-separation chamber 2 is filtered by the precision filtration unit 62 and then continues to enter the acid water circulation.

[0034] Furthermore, the water filtration device 3 adopts a plate and frame filter press or a vacuum filter with a filtration accuracy of 50~200 mesh.

[0035] Furthermore, the discharge end of the enclosed belt conveyor 4 extends above the transfer yard 5, and a dust cover 41 is installed on the outside of the conveying channel.

[0036] Furthermore, the acid water tank 6 is equipped with a liquid level monitoring device 61 and a precision filtration unit 62. The liquid level monitoring device 61 is used to monitor the liquid level in the acid water tank 6 in real time and replenish the acid water in time when it is insufficient; the precision filtration unit 62 is used to filter the acid water returning from the pre-separation chamber 2. The acid water tank 6 → acid water pump 7 → heat exchanger 8 → hydrolysis kettle 1 form a closed loop of acid water circulation.

[0037] Furthermore, heat exchanger 8 adopts a shell-and-tube heat exchanger, and heat exchanger 8 utilizes the residual heat from the reaction in hydrolysis vessel 1 to achieve heat exchange linkage.

[0038] Furthermore, the acid gas recovery device 9 includes an adsorption-desorption unit 91 and a gas diversion valve 92. The adsorption-desorption unit 91 is filled with columnar activated carbon, with a desorption vapor pressure of 0.4 MPa and a desorption temperature of 120°C. After purification, the HCl gas concentration is ≥90%. The gas discharged from the hydrolysis reactor 1 enters the acid gas recovery device 9, and after being diverted by the gas diversion valve 92, it enters the adsorption-desorption unit 91 for separation. The acid gas recovery device 9 is connected to a hydrochloric acid preparation tank 11 and an organosilicon raw material pretreatment process. Part of the recovered acid gas is used for hydrochloric acid preparation, and part is used for organosilicon raw material pretreatment, realizing resource recycling.

[0039] Furthermore, the online component analysis module 10 is connected to the main reaction zone 102 of the hydrolysis vessel 1, with a detection frequency of 1 time / 5min and a detection accuracy of ±0.1%, used to detect the residual amount of organosilicon and the mass fraction of HCl in the slurry residue in real time. Example 1

[0040] The hydrolysis reactor 1 is made of 304 stainless steel with a 1.0mm thick titanium alloy-PTFE composite coating on the inner wall. The reactor 1 contains a pre-reaction zone 101, a main reaction zone 102, and a deep reaction zone 103, and is equipped with independent temperature and pressure sensors and a variable frequency stirrer. The top is equipped with a feed inlet 111, a sealed gas collection channel 112, and an automatic overpressure relief valve (0.35MPa). The pre-separation chamber 2 rotates at 650r / min and is used to separate solid particles ≥1mm in size. Acidic water enters the precision filtration unit 62 of the acidic water tank 6. The filtration device 3 uses a plate and frame filter press with a filtration accuracy of 100 mesh. The acidic water tank 6 is equipped with a liquid level monitoring device 61 and a 200-mesh precision filtration unit 62. The acid gas recovery unit 9 is filled with 500L of columnar activated carbon. The desorption steam operates at 0.4MPa and 120℃. After purification, the HCl is split into two streams: 60% is used to prepare 22% hydrochloric acid, and 40% is used for silicon powder modification in the organosilicon raw material pretreatment process. The online component analysis module 10 performs analysis every 5 minutes with an accuracy of ±0.1%. The control system is a PLC, enabling fully automated control of the entire process.

[0041] Operating parameters: Pre-reaction zone 101: 30℃, 0.08MPa; Main reaction zone 102: 40℃, 0.25MPa, 150r / min; Deep reaction zone 103: 50℃, 0.18MPa; Acid water temperature at the outlet of heat exchanger 8: 35℃. See Table 1 for operational results. Comparative Example 1

[0042] It adopts a traditional single-reaction-zone hydrolysis vessel with a temperature of 40℃, a pressure of 0.2MPa, and a stirring speed of 150r / min. It has no zoning, no online analysis, no acid water circulation, and no gas recovery. Comparative Example 2

[0043] An open hydrolysis tank is used, with no sealing, no gas recovery, no waste heat utilization, and acid water is directly discharged, while solid and liquid settle naturally.

[0044] Table 1 Comparison of Effects

[0045] The above comparison shows that the present invention adopts a three-zone hydrolysis reactor with intelligent control, reducing the residual amount of organosilicon to 0.35%, which is far superior to the traditional process; the present invention achieves batch fluctuation ≤ ±0.2% through online monitoring and adaptive adjustment; the present invention forms an acid water circulation system from acid water tank 6 → acid water pump 7 → heat exchanger 8 → hydrolysis reactor 1, with a recovery rate of 96%, significantly reducing the consumption of fresh water and hydrochloric acid; the present invention uses the waste heat of the hydrolysis reactor for heat exchanger and performs precise temperature control, reducing emissions by 39.3% compared to the traditional single-zone system and by 54.4% compared to the open system; the present invention has a fully enclosed circulation system, recovering generated acidic gases, achieving zero leakage, zero dust, and full resource utilization of solids, liquids, and gases.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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 the present invention and their equivalents, they should all be considered to be within the protection scope of the present invention.

Claims

1. A high-efficiency closed-loop hydrolysis and resource recycling system for organosilicon slurry residue, comprising a hydrolysis reactor (1), a pre-separation chamber (2), a water filtration device (3), a closed belt conveyor (4), a transfer yard (5), an acid water tank (6), an acid water pump (7), a heat exchanger (8), an acid gas recovery device (9), an online component analysis module (10), and a control system, characterized in that, The hydrolysis reactor (1) is a multi-zone closed structure. Inside, along the material flow direction, there are a pre-reaction zone (101), a main reaction zone (102), and a deep reaction zone (103). The zones are separated by a guide plate with a material channel. The top of the hydrolysis reactor (1) is provided with a feed inlet (111) and a closed gas collection channel (112), and the bottom is provided with a discharge outlet (113). The discharge outlet (113) is connected to the pre-separation chamber (2), and the pre-separation chamber (2) is connected to the water filtration device (3). The water filtration device (3) is provided with a solid residue outlet (31) and an acid water outlet (32). The solid residue outlet (31) is connected to a closed belt conveyor (4), and the closed belt conveyor (4) is connected to the middle The transfer yard (5) is connected, the acid water outlet (32) is connected to the acid water tank (6), the acid water tank (6) is connected to the heat exchanger (8) through the acid water pump (7), the heat exchanger (8) is connected to the feed inlet (111) of the hydrolysis kettle (1), the closed gas collection channel (112) of the hydrolysis kettle (1) is connected to the acid gas recovery device (9), and the acid gas recovery device (9) is connected to the hydrochloric acid preparation tank (11); the control system is electrically connected to the hydrolysis kettle (1), the pre-separation chamber (2), the water filtration device (3), the closed belt conveyor (4), the acid water pump (7), the heat exchanger (8), the acid gas recovery device (9), the online component analysis module (10), and the acid water tank (6).

2. The high-efficiency closed-loop hydrolysis and resource recycling system for organosilicon slurry residue according to claim 1, characterized in that, The inner wall of the hydrolysis vessel (1) is provided with a titanium alloy-polytetrafluoroethylene composite coating with a coating thickness of 0.8~1.2mm. The hydrolysis vessel (1) is provided with a temperature regulating device and a pressure monitoring device. The temperature regulating device and the pressure monitoring device are electrically connected to the control system. The top of the hydrolysis vessel (1) is also provided with an overpressure automatic pressure relief valve with a safety threshold set at 0.35MPa.

3. The high-efficiency closed-loop hydrolysis and resource recycling system for organosilicon slurry residue according to claim 1, characterized in that, The hydrolysis reactor (1) adopts a jacket design and is equipped with an electric heating jacket and a cooling coil. The temperature control range of the pre-reaction zone (101) of the hydrolysis reactor (1) is 20~40℃ and the pressure is 0.05~0.1MPa. The temperature control range of the main reaction zone (102) is 30~50℃ and the pressure is 0.2~0.3MPa. The main reaction zone (102) is equipped with a variable frequency stirrer with a stirring rate of 50~200r / min. The temperature control range of the deep reaction zone (103) is 40~60℃ and the pressure is 0.05~0.2MPa.

4. The high-efficiency closed-loop hydrolysis and resource recycling system for organosilicon slurry residue according to claim 1, characterized in that, The pre-separation chamber (2) is equipped with high-speed rotating guide vanes with a rotation speed of 500~800r / min; the bottom of the pre-separation chamber (2) is equipped with an acid water return channel and is connected to the acid water tank (6).

5. The high-efficiency closed-loop hydrolysis and resource recycling system for organosilicon slurry residue according to claim 1, characterized in that, The water filtration device (3) adopts a plate and frame filter press or a vacuum filter with a filtration accuracy of 50~200 mesh.

6. The high-efficiency closed-loop hydrolysis and resource recycling system for organosilicon slurry residue according to claim 1, characterized in that, The discharge end of the enclosed belt conveyor (4) extends above the transfer yard (5), and a dust cover (41) is installed on the outside of the conveying channel.

7. The high-efficiency closed-loop hydrolysis and resource recycling system for organosilicon slurry residue according to claim 1, characterized in that, The acid water tank (6) is equipped with a liquid level monitoring device (61) and a precision filtration unit (62).

8. The high-efficiency closed-loop hydrolysis and resource recycling system for organosilicon slurry residue according to claim 1, characterized in that, The heat exchanger (8) adopts a shell-and-tube heat exchanger.

9. The high-efficiency closed-loop hydrolysis and resource recycling system for organosilicon slurry residue according to claim 1, characterized in that, The acid gas recovery device (9) includes an adsorption-desorption unit (91) and a gas diversion valve (92). The adsorption-desorption unit (91) is filled with columnar activated carbon. The desorption vapor pressure is 0.4 MPa and the desorption temperature is 120 °C. After purification, the HCl gas concentration is ≥90%.

10. The high-efficiency closed-loop hydrolysis and resource recycling system for organosilicon slurry residue according to claim 1, characterized in that, The online component analysis module (10) is connected to the main reaction zone (102) of the hydrolysis vessel (1), with a detection frequency of 1 time / 5min and a detection accuracy of ±0.1%.

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