A pressure cooking reactor device

Abstract

This invention discloses a pressure cooking reactor, comprising a main heating chamber, an auxiliary heating chamber, a heater, a circulating stirring pump, and a high-temperature, high-pressure exhaust valve. The main heating chamber and the auxiliary heating chamber are connected by several heating coils. Heating wires for the heater are arranged around the main heating chamber, the heating coils, and the auxiliary heating chamber. An insulation layer is provided around the heater. A circulation outlet pipe leading from the bottom of the auxiliary heating chamber is connected to the inlet of the circulating stirring pump, and the outlet of the circulating stirring pump is connected to a circulation inlet pipe leading from one side of the main heating chamber. A high-temperature, high-pressure exhaust pipe is led out from the top of the main heating chamber, and a high-temperature, high-pressure exhaust valve is installed on the high-temperature, high-pressure exhaust pipe. The outlet of the high-temperature, high-pressure exhaust pipe is connected to a heat exchanger. This pressure cooking reactor eliminates the problems of bearing wear and stirring wear; its integrated design eliminates the risk of leakage through openings, reducing leakage risks; and its specially designed exhaust system is suitable for reactions that generate large amounts of gas.

Description

Technical Field

[0001] This invention relates to the field of reaction vessel equipment technology, and in particular to a pressure cooking reaction vessel. Background Technology

[0002] Traditional high-temperature and high-pressure reactors refer to reactors that operate under high temperature and high pressure. They are pressure vessels widely used in petroleum, chemical, rubber, pesticide, dye, pharmaceutical, and food industries to complete processes such as vulcanization, nitration, hydrogenation, hydrocarbonation, polymerization, and condensation. Examples include reactors, reaction vessels, decomposition tanks, and polymerization tanks. Their materials generally include carbon manganese steel, stainless steel, zirconium, nickel-based alloys (Hastelloy, Monel, Inconel), and other composite materials.

[0003] like Figure 2 As shown, a traditional high-temperature and high-pressure reactor consists of a stirrer, a reaction vessel and transmission system, a safety device, a cooling device, and a heating furnace. Specifically, it has the following characteristics: (1) The vessel body and the vessel cover are made of specific stainless steel. The vessel body is connected by flanges and threads, and the vessel cover is a flat plate cover. These two parts are connected by circumferentially distributed nuts and main bolts; (2) The main sealing port of the high-pressure reactor uses a double-line seal. The other sealing points generally adopt a line contact sealing form between a plane and an arc surface, and between arc surfaces. Relying on the ultra-high precision and smoothness of the contact surface, a very good sealing effect is achieved; (3) The vessel body is equipped with a barrel-shaped silicon carbide furnace core. The heating wire passes through the furnace core, and its end passes out from the lower part of the furnace shell. It is connected to the controller through a wiring stud and a rubber-sheathed cable; (4) The coupling is mainly composed of a pair of inner and outer magnetic rings with strong magnetic force, with a pressure-bearing spacer in the middle. The stirrer is driven by a servo motor through the coupling. (5) A speed measuring coil is installed on the upper part of the partition sleeve. When the stirrer and the inner magnetic ring rotate as a whole, the speed measuring coil generates an induced electromotive force. This electromotive force corresponds to the stirring speed. This electromotive force is transmitted to the tachometer, which can display the stirring speed. (6) The lid is equipped with a pressure gauge, a rupture membrane safety device, a vapor-liquid phase valve, a temperature sensor, etc., so as to understand the reaction situation in the kettle at any time, adjust the medium ratio in the kettle, and ensure the safe operation of the high-pressure reactor. (7) The bearings are made of stainless steel bearings or high-strength electrographite, which are wear-resistant and have a long maintenance cycle. (8) A cooling water jacket is installed between the magnetic coupling and the lid. Cooling water should be circulated when the operating temperature is high, and the magnets should be demagnetized when the temperature is too high.

[0004] However, the above-mentioned traditional high-temperature and high-pressure reactors have the following defects: (1) The swing of the stirring shaft of the high-pressure reactor should be checked regularly. If the swing is found to be large, it should be disassembled immediately and the bearings and bushings should be replaced according to the structural diagram; (2) The reactor cover and reactor body are designed separately, and leakage is prone to occur at the sealing surface. During repeated disassembly and assembly of the reactor cover and reactor body of the micro high-pressure reactor, the nut threads may loosen or the sealing surface may be damaged. The solution is to tighten the nuts again and polish the sealing surface; (3) the motor turns but the magnet does not turn, the motor current decreases, the temperature inside the micro high-pressure reactor is too high, the cooling system has a problem, and the magnet is demagnetized due to high temperature; (4) there is friction noise when stirring, and when the reaction solution has crystals or solids, the internal magnetic drive of the magnetic coupler is prone to jamming and wear; (5) it is not applicable to reactions with a large amount of gas generation, it is prone to explosion, and there is no corresponding exhaust design; (6) the price of magnetic stirrers is high, and high-pressure magnetic stirring reactors need to have higher temperature and pressure performance, so the price is even higher; (7) since the reactor and stirrer need to be sealed, the leakage risk of high-pressure magnetic stirring reactors is relatively high; (8) since the reaction is carried out under high pressure and high temperature, some reactants and products adhere to the reactor wall and stirrer, making cleaning difficult. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a pressure cooking reactor.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] The first aspect of the present invention is to provide a pressure cooking reactor, comprising a main heating chamber, an auxiliary heating chamber, a heater, a circulating stirring pump, and a high-temperature and high-pressure exhaust valve;

[0008] The main heating chamber and the auxiliary heating chamber are connected by several heating coils. The heating wires of the heater are arranged around the main heating chamber, the several heating coils and the auxiliary heating chamber. The heater is surrounded by a heat insulation layer.

[0009] The circulation outlet pipe leading out from the bottom of the auxiliary heating chamber is connected to the inlet of the circulation stirring pump, and the outlet of the circulation stirring pump is connected to the circulation inlet pipe leading out from one side of the main heating chamber; a high-temperature and high-pressure exhaust pipe is led out from the top of the main heating chamber, and a high-temperature and high-pressure exhaust valve is installed on the high-temperature and high-pressure exhaust pipe, and the outlet of the high-temperature and high-pressure exhaust pipe is connected to a heat exchanger; a water supply valve is installed on the circulation inlet pipe.

[0010] Furthermore, the main heating chamber is also equipped with a temperature sensor, a pressure sensor, and a safety valve.

[0011] Furthermore, a drain pipe extends from the bottom of the auxiliary heating chamber, and the other end of the drain pipe is connected to the high-temperature and high-pressure exhaust pipe.

[0012] Furthermore, a drain valve is installed on the drain pipeline.

[0013] Furthermore, the auxiliary heating chamber is a vertical heating chamber, and the number of them is 1-10.

[0014] Furthermore, the main heating chamber is a horizontal heating chamber.

[0015] Furthermore, an inlet / exhaust pipe is led out from one side of the main heating chamber, and an inlet / exhaust valve is installed on the inlet / exhaust pipe.

[0016] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0017] The pressure cooking reactor of this invention eliminates the problems of bearing wear and agitator wear; its integrated design eliminates the risk of leakage due to the absence of openings; its specially designed exhaust system is suitable for reactions that generate large amounts of gas; it solves the problems of demagnetization and cooling, and addresses the issue of high costs associated with magnetic stirring; and it allows for cyclic cleaning, solving the problem of inconvenient cleaning. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the pressure cooking reactor equipment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a high-temperature and high-pressure reactor in the prior art;

[0020] The reference numerals in the attached figures are:

[0021] 1-Main heating chamber, 2-Auxiliary heating chamber, 3-Heating coil, 4-Heater, 5-Insulation layer, 6-Circulating stirring pump, 7-Water supply valve, 8-Inlet / outlet valve, 9-Drain valve, 10-High temperature and high pressure exhaust valve, 11-Heat exchanger, 12-Temperature sensor, 13-Pressure sensor, 14-Safety valve, 15-Magnetic coupler, 16-Temperature sensing element, 17-Pressure gauge / explosion-proof membrane device, 18-Cabin lid, 19-Cabin body, 20-Internal cooling coil, 21-Propeller stirrer, 22-Heating furnace device, 23-Needle valve. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the invention. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other.

[0023] refer to Figure 1The present invention provides a pressure cooking reactor, including a main heating chamber 1, an auxiliary heating chamber 2, a heater 4, a circulating stirring pump 6, and a high-temperature and high-pressure exhaust valve 10;

[0024] The main heating chamber 1 and the auxiliary heating chamber 2 are connected by several heating coils 3. The heating wires of the heater 4 are arranged around the main heating chamber 1, the several heating coils 3 and the auxiliary heating chamber 2. The heater 4 is surrounded by a heat insulation layer 5.

[0025] The circulation outlet pipe leading out from the bottom of the auxiliary heating chamber 2 is connected to the inlet of the circulation stirring pump 6, and the outlet of the circulation stirring pump 6 is connected to the circulation inlet pipe leading out from one side of the main heating chamber 1; a high-temperature and high-pressure exhaust pipe is led out from the top of the main heating chamber 1, and a high-temperature and high-pressure exhaust valve 10 is installed on the high-temperature and high-pressure exhaust pipe, and the outlet of the high-temperature and high-pressure exhaust pipe is connected to the heat exchanger 11; a water supply valve 7 is installed on the circulation inlet pipe.

[0026] The main heating chamber 1 is also equipped with a temperature sensor 12, a pressure sensor 13 and a safety valve 14; the bottom of the auxiliary heating chamber 2 is also connected to a drain pipe, the other end of which is connected to a high temperature and high pressure exhaust pipe, and a drain valve 9 is installed on the drain pipe; an inlet / outlet pipe is connected to one side of the main heating chamber 1, and an inlet / outlet valve 8 is installed on the inlet / outlet pipe.

[0027] As a preferred example, the auxiliary heating chamber 2 is a vertical heating chamber, and the number of them is 1-10; more preferably, there are 3.

[0028] As a preferred example, the main heating chamber 1 is a horizontal heating chamber.

[0029] In this invention, a horizontal main heating chamber 1 and multiple vertical auxiliary heating chambers 2 are employed. The main heating chamber 1 and the auxiliary heating chambers 2 are connected by densely packed heating coils 3. The heating wires of the heaters 4 are arranged around the main heating chamber 1, the auxiliary heating chambers 2, and the heating coils 3, effectively increasing the heat exchange area and improving the heat exchange efficiency. The outermost layer is a thermal insulation layer 5 to prevent heat loss. The multiple vertical auxiliary heating chambers 2 facilitate the collection of solid products when they are generated. At this time, the curvature of the bottom end cap of the vertical heating chambers plays a role in collecting solid products, making it easy to discharge them from the bottom drain port.

[0030] In this invention, circulation outlet pipes extending from the bottom 2 of multiple vertical auxiliary heating chambers are connected to the inlet of the circulation stirring pump 6, and then from the outlet of the circulation stirring pump 6 to the circulation inlet of the main heating chamber 1. Through the hydraulic stirring action of the circulation stirring pump 6, the temperature of the reactants and the solute are balanced.

[0031] In this invention, a high-temperature and high-pressure exhaust pipe is led out from the top of the main heating chamber 1, and a high-temperature and high-pressure exhaust valve 10 is installed on the high-temperature and high-pressure exhaust pipe. The outlet of the high-temperature and high-pressure exhaust pipe is connected to a heat exchanger 11. A drain pipe is also led out from the bottom of the auxiliary heating chamber 2, and the other end of the drain pipe is connected to the high-temperature and high-pressure exhaust pipe. The high-temperature and high-pressure exhaust gas and the reaction products are cooled. The former can control the degree of reaction and expand the scope of application, while the latter can discharge the reaction products in time and improve the processing efficiency.

[0032] The working principle of the pressure cooking reactor equipment of the present invention is as follows:

[0033] Liquid replenishment process: First, replenish the reaction solution through the water replenishment valve 7. During the liquid replenishment process, open the inlet / outlet valve 8 to expel the air in the heating chamber. Once the liquid level is reached, close the water replenishment valve 7 and the inlet / outlet valve 8.

[0034] Heating process: Heater 4 and circulating stirring pump 6 are started. Heater 4 generates heat and transfers it to the reaction solution through main heating chamber 1, auxiliary heating chamber 2 and heating coil 3. During the heating reaction, circulating stirring pump 6 plays a role in balancing the temperature of the reaction solution, preventing local overheating, and hydraulically stirring the reaction products evenly. During the heating process, temperature sensor 12 and pressure sensor 13 detect the temperature and pressure inside the equipment in real time, thereby controlling the degree of reaction. Safety valve 14 mainly serves the purpose of safety protection.

[0035] High temperature and high pressure exhaust process: In order to control the reaction temperature, pressure and reaction degree, the high temperature and high pressure exhaust valve 10 is opened to exhaust the water vapor and reaction gas in a timely manner. During the high temperature and high pressure water vapor exhaust process, the heat exchanger 11 is circulated with cooling water to cool down and depressurize the high temperature and high pressure water vapor.

[0036] Drainage process: Open inlet / outlet valve 8 and drain valve 9. The reaction product is discharged through drain valve 9. At the same time, gas is introduced through inlet / outlet valve 8. At this time, the temperature of the reactants is high. Start heat exchanger 11 to introduce cooling water to cool the high-temperature reaction product before it is discharged.

[0037] Application examples

[0038] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the content and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure cooking reactor, characterized in that, It includes a main heating chamber (1), an auxiliary heating chamber (2), a heater (4), a circulating stirring pump (6), and a high-temperature and high-pressure exhaust valve (10); The main heating chamber (1) and the auxiliary heating chamber (2) are connected by several heating coils (3). The heating wires of the heater (4) are arranged around the main heating chamber (1), the several heating coils (3) and the auxiliary heating chamber (2). The heater (4) is provided with a heat insulation layer (5) around it. The circulation outlet pipe leading out from the bottom of the auxiliary heating chamber (2) is connected to the inlet of the circulation stirring pump (6), and the outlet of the circulation stirring pump (6) is connected to the circulation inlet pipe leading out from one side of the main heating chamber (1); a high-temperature and high-pressure exhaust pipe is led out from the top of the main heating chamber (1), and a high-temperature and high-pressure exhaust valve (10) is installed on the high-temperature and high-pressure exhaust pipe, and the outlet of the high-temperature and high-pressure exhaust pipe is connected to the heat exchanger (11); a water supply valve (7) is installed on the circulation inlet pipe.

2. The pressure cooking reactor equipment according to claim 1, characterized in that, The main heating chamber (1) is also equipped with a temperature sensor (12), a pressure sensor (13), and a safety valve (14).

3. The pressure cooking reactor equipment according to claim 1, characterized in that, The bottom of the auxiliary heating chamber (2) is also connected to a drain pipe, and the other end of the drain pipe is connected to the high temperature and high pressure exhaust pipe.

4. The pressure cooking reactor equipment according to claim 3, characterized in that, A drain valve (9) is installed on the drain pipe.

5. The pressure cooking reactor equipment according to claim 1, characterized in that, The auxiliary heating chamber (2) is a vertical heating chamber, and the number of them is 1-10.

6. The pressure cooking reactor equipment according to claim 1, characterized in that, The main heating chamber (1) is a horizontal heating chamber.

7. The pressure cooking reactor equipment according to claim 1, characterized in that, An inlet / outlet pipe is led out from one side of the main heating chamber (1), and an inlet / outlet valve (8) is installed on the inlet / outlet pipe.

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