Hydrolysis method with multi-section temperature control and pressure regulation

Abstract

The invention discloses a hydrolysis method with multi-stage temperature control and pressure regulation, and relates to the technical field of hydrolysis reaction. Through a multi-section temperature control and pressure regulation mechanism, the temperature and the pressure of each reaction stage are accurately controlled, so that the reaction process is more uniform and controllable, and the hydrolysis efficiency and the oil quality are remarkably improved. Compared with a traditional hydrolysis process, the problem of incomplete or unstable reaction caused by temperature and pressure fluctuation in the reaction process is avoided, and the yield and quality of the product are effectively improved; through combination of intelligent steam flow adjustment and a waste heat recovery system, the steam flow is dynamically adjusted, waste heat in the reaction process is effectively recovered, and excessive consumption of steam is reduced. The automatic adjustment of the steam flow can be changed in real time according to reaction requirements, energy waste is avoided, the waste heat recovery device can recover heat in waste gas and waste water for heating feed, the utilization efficiency of energy is further improved, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hydrolysis reaction, in particular to a hydrolysis method with multi-stage temperature control and pressure regulation. Background Art

[0002] In existing hydrolysis processes, temperature, pressure and steam flow are usually controlled with fixed settings, and these settings rarely take into account dynamic changes during the reaction process. Traditional hydrolysis reaction systems usually maintain constant temperature and pressure throughout the process, and this single, fixed control method often leads to fluctuations in reaction rate, affecting product quality and yield. For example, in the early stages of hydrolysis, excessively high temperatures or excessive pressures may cause the reaction to be too violent, resulting in waste of resources or incomplete reaction, while in the later stages of the reaction, insufficient temperature and pressure settings may lead to low reaction efficiency. In addition, the control of steam flow in traditional processes mostly relies on manual adjustment or preset fixed flow values. This method not only lacks flexibility, but may also cause excessive steam consumption, leading to energy waste. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a hydrolysis method with multi-stage temperature control and pressure regulation, comprising the following steps: S1, injecting the oil-water mixture into the hydrolysis tower to start the hydrolysis process; S2, heating the hydrolysis tower by steam to preliminarily heat the oil-water mixture and maintain a suitable pressure; S3, in the initial stage of the hydrolysis tower, controlling the temperature between 70°C and 90°C to ensure uniform start-up of the reaction; S4, continuing to heat to 90°C to 120°C to increase the reaction rate; S5, further increasing the temperature to 210°C to 220°C, and adjusting the pressure to 3.0MPa to promote efficient reaction; S6, ensuring efficient and accurate oil-water separation through a multi-stage separation device and real-time oil-water ratio adjustment; S7, recovering the waste heat in the reaction process and optimizing the steam flow rate to improve energy utilization efficiency; S8, real-time monitoring of the entire process, and adjusting the temperature, pressure and steam flow rate through automatic control; S9, after the hydrolysis is completed, separating the oil and water, and finally processing and discharging the product.

[0004] Preferably, in the hydrolysis tower, sensors are used to monitor the temperature and pressure changes in each area, and the temperature control and pressure of each stage are dynamically adjusted based on real-time data; these sensors can detect the oil-water ratio in the tower, the gas composition in the tower, and the flow rate of oil and water, and provide real-time feedback to the central control system for data processing and adjustment according to the reaction stage.

[0005] Preferably, the temperature, pressure and reactant status in the hydrolysis tower are monitored in real time, and the steam flow rate is adjusted to maintain a stable hydrolysis temperature. At the same time, the steam flow rate is adjusted through an integrated feedback system. The system will recycle and reuse the waste heat of steam in the hydrolysis process to reduce energy consumption.

[0006] Preferably, the oil-water separation in the hydrolysis tower adopts a multi-stage separation device and a dynamic oil-water ratio adjustment mechanism to ensure the oil-water separation effect at each stage. The separation of oil and water is ensured by configuring multiple separation chambers and a liquid flow direction control system in the hydrolysis tower.

[0007] Preferably, various parameters, including temperature, pressure, steam flow, and oil-water ratio, are automatically adjusted according to the real-time feedback data of the hydrolysis tower; the control strategy is optimized by analyzing historical data so that the hydrolysis process can run automatically, self-learn and optimize.

[0008] Preferably, the waste gas and waste water generated in S1-S9 are treated and recycled; in the waste water treatment, the waste water discharged during the hydrolysis process is recovered through a reverse osmosis membrane filtration device, and the waste water is returned to the hydrolysis tower after purification, thereby reducing the use of fresh water; in the waste gas recovery, the waste gas generated during the hydrolysis process is treated through a desulfurization device and a denitrification device, and the usable gas therein is recovered, thereby reducing waste gas emissions and reducing pollution.

[0009] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention uses a multi-stage temperature control and pressure adjustment mechanism to accurately control the temperature and pressure of each reaction stage, making the reaction process more uniform and controllable, thereby significantly improving the hydrolysis efficiency and oil quality. Compared with the traditional hydrolysis process, the present invention avoids the problem of incomplete or unstable reaction caused by temperature and pressure fluctuations during the reaction process, and effectively improves the yield and quality of the product; (2) The present invention combines intelligent steam flow regulation with a waste heat recovery system to dynamically adjust the steam flow and effectively recover the waste heat during the reaction process, thereby reducing excessive steam consumption. The automatic adjustment of the steam flow can change in real time according to the reaction requirements, avoiding energy waste, and the waste heat recovery device can recover the heat in the waste gas and wastewater for heating the feed, further improving the energy utilization efficiency and reducing production costs; (3) The present invention monitors the key parameters of temperature, pressure, and oil-water ratio in the hydrolysis tower in real time, and automatically adjusts the corresponding operating conditions. Automatically adjust various parameters according to real-time feedback data, reduce manual intervention, and improve the stability and safety of the production process; (4) The present invention uses a multi-stage oil-water separation device and a dynamic oil-water ratio adjustment mechanism to accurately control the oil-water ratio at different reaction stages, and optimize the separation process through multiple separation chambers to ensure efficient separation of oil and water. This not only maximizes the recovery of valuable oil products, but also reduces waste emissions and improves overall resource utilization; (5) The present invention adopts a wastewater recovery and waste gas treatment system. The wastewater is purified by a reverse osmosis membrane filtration device and then returned to the hydrolysis tower, reducing the use of fresh water and saving water resources. The waste gas is treated by a desulfurization and denitrification device to recover useful gas, reducing waste gas emissions and effectively reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The figure is a flow chart of the process of the present invention. DETAILED DESCRIPTION

[0011] The following is combined with Figure 1 The technical solution of the present invention is further illustrated by specific implementation methods.

[0012] The present invention provides a hydrolysis method with multi-stage temperature control and pressure regulation, comprising the following steps: S1, raw oil / water mixture input: the oil-water mixture is injected into a hydrolysis tower to start the hydrolysis process; S2, entering the hydrolysis tower (preheating stage): the hydrolysis tower is heated by steam to preliminarily heat the oil-water mixture and maintain a suitable pressure; S3, initial stage temperature control: in the initial stage of the hydrolysis tower, the temperature is controlled between 70° C. and 90° C. to ensure uniform start of the reaction; S4, heating stage: continue to heat to 90° C. to 120° C. to increase the reaction speed; S5, high temperature and high pressure stage: this stage is a key reaction stage, The temperature is further increased to 210°C to 220°C, and the pressure is adjusted to 3.0MPa to promote efficient reaction; S6, multi-stage oil-water separation and optimization: through multi-stage separation device and real-time oil-water ratio adjustment, ensure efficient and accurate oil-water separation; S7, waste heat recovery and steam regulation: recover waste heat in the reaction process and optimize steam flow to improve energy utilization efficiency; S8, automated control system: monitor the entire process in real time, and adjust the temperature, pressure and steam flow through automated control; S9, final oil-water separation and discharge: after hydrolysis is completed, the oil and water are separated, and finally the product is processed and discharged.

[0013] In the hydrolysis tower, sensors are used to monitor the temperature and pressure changes in each area, and the temperature control and pressure of each stage are dynamically adjusted according to real-time data; these sensors can detect the oil-water ratio, gas composition, and oil and water flow rates in the tower, and provide real-time feedback to the central control system for data processing and adjustment according to the reaction stage. For example, in the initial stage (temperature control stage 1): the temperature is set between 70-90°C and the pressure is set to about 2.0MPa. At this time, the reaction rate is slow, and the purpose is to ensure the uniform start of the hydrolysis process. Heating stage (temperature control stage 2): As the reaction progresses, the temperature is gradually increased to 120°C and the pressure is increased to 2.8MPa to promote the acceleration of the reaction. High temperature and high pressure stage (temperature control stage 3): In this stage, the temperature is controlled at 210-220°C and the pressure reaches 3.0MPa to achieve efficient oil-water separation and hydrolysis. With this segmented temperature control and pressure adjustment mechanism, it can be precisely controlled according to the reaction state of each stage, thereby improving the efficiency and quality of hydrolysis. It can ensure that each reaction stage can maintain the best working conditions, and through the segmented control method, it breaks through the limitations of the single temperature and pressure setting in the traditional method, can effectively improve the hydrolysis efficiency, and avoid the common problem of incomplete reaction caused by uneven temperature or pressure fluctuations.

[0014] By real-time monitoring of the temperature, pressure and reactant state in the hydrolysis tower, the steam flow rate is adjusted to maintain a stable hydrolysis temperature. At the same time, the steam flow rate is adjusted through an integrated feedback system. The system will recycle and reuse the steam waste heat in the hydrolysis process to reduce energy consumption. In actual operation, a pressure sensor and a temperature sensor are used in combination to detect the heat demand at each stage in the tower. In the initial reaction stage, the steam flow rate is small, and only a low heating rate needs to be maintained to prevent the reaction from being too fast. In the mid-term reaction stage, the steam flow rate is gradually increased to accelerate the hydrolysis reaction. In the late reaction stage, after reaching the optimal reaction conditions, the system automatically adjusts the steam flow rate to the minimum to reduce energy consumption. In addition, through the waste heat recovery device, the hot gas and water vapor in the tower can be introduced into a special heat exchanger, and the waste heat can be used to heat the feed by heat exchange, further improving the energy efficiency of the system. In traditional processes, the steam flow rate is usually set manually or fixedly, which lacks flexibility. The present invention can not only improve the hydrolysis efficiency, but also significantly reduce energy consumption by dynamically adjusting the steam flow rate.

[0015] The oil-water separation in the hydrolysis tower adopts a multi-stage separation device and a dynamic oil-water ratio adjustment mechanism to ensure the oil-water separation effect at each stage. The separation of oil and water is ensured by configuring multiple separation chambers and a liquid flow direction control system in the hydrolysis tower. Dynamic adjustment uses an online oil-water sensor to monitor the real-time oil-water ratio according to the changes in the oil-water ratio in the middle and late stages of the reaction. When the oil-water ratio deviates from the ideal range, the system automatically adjusts the feed flow of water and oil, thereby dynamically controlling the oil-water ratio during the reaction process to ensure the optimal oil-water separation efficiency during the reaction process. Multi-stage separation chambers, each of which is equipped with a liquid separation device, which can accurately separate oil and water according to the properties of oil and water (such as density and viscosity) at each separation stage to improve the separation efficiency. Breaking through the single oil-water separation method of the traditional hydrolysis tower, using multi-stage separation and dynamic oil-water ratio adjustment, the distribution and separation of oil and water during the hydrolysis process can be accurately adjusted. This method can greatly improve the efficiency of oil-water separation, reduce unnecessary losses, and ensure the quality of the oil produced during the hydrolysis process.

[0016] According to the real-time feedback data of the hydrolysis tower, various parameters are automatically adjusted, including temperature, pressure, steam flow, and oil-water ratio; the control strategy is optimized by analyzing historical data, so that the hydrolysis process can run automatically, self-learn and optimize. The system automatically generates the optimal control strategy based on historical production data and real-time monitoring data, using prediction algorithms and pattern recognition technology. When any abnormality occurs in the equipment, the system can issue an alarm in real time to prompt the operator to take preventive or corrective measures. Through self-learning and data-driven decision-making mechanisms, the production process can continuously improve itself, reduce manual operation errors, and improve overall efficiency and stability.

[0017] The waste gas and waste water generated in S1-S9 are treated and recycled. For waste water treatment, the waste water discharged during the hydrolysis process is recovered through an evaporation concentration device, and after purification, it is returned to the hydrolysis tower to reduce the use of fresh water. For waste gas recovery, the waste gas generated during the hydrolysis process is treated through a desulfurization device and a denitrification device, and the usable gas therein is recovered to reduce waste gas emissions and pollution.

Claims

1. A hydrolysis method with multi-stage temperature control and pressure regulation, characterized in that: The following steps are involved: S1, the oil-water mixture is injected into the hydrolysis tower to start the hydrolysis process; S2, heating the hydrolysis tower by steam to preliminarily heat the oil-water mixture and maintain a suitable pressure; S3. In the initial stage of the hydrolysis tower, the temperature is controlled between 70°C and 90°C to ensure uniform start-up of the reaction; S4, continue heating to 90°C to 120°C to increase the reaction speed; S5, the temperature is further increased to 210-220 degrees, and the pressure is adjusted to 3.0 MPa to promote efficient reaction; S6. Ensure efficient and accurate oil-water separation through multi-stage separation device and real-time oil-water ratio adjustment; S7, recover the waste heat in the reaction process and optimize the steam flow to improve energy efficiency; S8, monitor the whole process in real time and adjust the temperature, pressure and steam flow through automatic control; S9. After the hydrolysis is completed, the oil and water are separated, and finally the product is processed and discharged.

2. A hydrolysis method with multi-stage temperature control and pressure regulation according to claim 1, characterized in that: In the hydrolysis tower, sensors are used to monitor the temperature and pressure changes in each area, and the temperature control and pressure of each stage are dynamically adjusted based on real-time data; these sensors can detect the oil-water ratio in the tower, the gas composition in the tower, and the flow rate of oil and water, and provide real-time feedback to the central control system for data processing and adjustment according to the reaction stage.

3. A hydrolysis method with multi-stage temperature control and pressure regulation according to claim 2, characterized in that: By real-time monitoring of the temperature, pressure and reactant status in the hydrolysis tower, the steam flow rate is adjusted to maintain a stable hydrolysis temperature. At the same time, the steam flow rate is adjusted through an integrated feedback system. The system will recycle and reuse the waste heat of steam in the hydrolysis process to reduce energy consumption.

4. The hydrolysis method with multi-stage temperature control and pressure regulation according to claim 3, characterized in that: The oil-water separation in the hydrolysis tower adopts a multi-stage separation device and a dynamic oil-water ratio adjustment mechanism to ensure the oil-water separation effect at each stage. The separation of oil and water is ensured by configuring multiple separation chambers and a liquid flow direction control system in the hydrolysis tower.

5. A hydrolysis method with multi-stage temperature control and pressure regulation according to claim 4, characterized in that: Automatically adjust various parameters including temperature, pressure, steam flow, and oil-water ratio based on real-time feedback data from the hydrolysis tower; optimize control strategies through analysis of historical data so that the hydrolysis process can run automatically, self-learn, and optimize.

6. A hydrolysis method with multi-stage temperature control and pressure regulation according to claim 5, characterized in that: The waste gas and waste water generated in S1-S9 are treated and recycled; Among them, wastewater treatment, through evaporation concentration device, recovers the wastewater discharged during the hydrolysis process, and returns it to the hydrolysis tower after purification, reducing the use of fresh water; Among them, waste gas recovery, the waste gas generated in the hydrolysis process is treated by a desulfurization device and a denitrification device, and the usable gas therein is recovered to reduce waste gas emissions and pollution.

Images