Micro-channel reactor for high exothermic reaction of viscous liquid

Abstract

The utility model relates to the technical field of micro-channel reactors, in particular to a micro-channel reactor for high exothermic reaction of viscous liquid, which comprises a pretreatment component, a plunger pump is mounted on the right side surface of the pretreatment component, and one end of a liquid inlet is mounted on one side surface of the plunger pump. A micro-channel reactor body is installed at the other end of the liquid inlet, a heat exchange plate is installed in the micro-channel reactor body, a liquid outlet is formed in the surface of one side of the micro-channel reactor body, and the pretreatment assembly comprises a pretreatment chamber installed on the surface of one side of a plunger pump. According to the improved micro-channel reactor, the design of the pretreatment assembly is adopted, the viscosity of reactants can be effectively reduced by pretreating the reactants, the phenomenon that the micro-channel reactor body is blocked by the reactants is avoided, the design that the filter screen is convenient to replace is adopted, the filter screen is convenient to clean and replace in time, the filter screen is prevented from being blocked by impurities, and the service life of the micro-channel reactor is prolonged. The use of the equipment is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of microchannel reactors, in particular to a microchannel reactor used for high exothermic reaction of viscous liquids. Background Art

[0002] The microstructure inside the microchannel reactor makes the microchannel reactor have a very large specific surface area, which can reach hundreds or even thousands of times the specific surface area of ​​the stirred tank. The microreactor has excellent heat and mass transfer capabilities, and can achieve uniform mixing of materials and efficient heat transfer. Therefore, many reactions that cannot be achieved in conventional reactors can be achieved in microchannel reactors. At present, microreactors have been widely used in the research and development of chemical process.

[0003] In microchannel reactor technology, when processing reactants with high viscosity, the microchannel reactor is prone to clogging, affecting the reaction efficiency and stability, and even causing damage to the microchannel reactor, affecting the use of the equipment.

[0004] In the process of realizing the utility model, the inventors found that the prior art had the following problems: 1. In daily use, the existing microchannel reactor is still insufficient in handling viscous liquids and reactants of highly exothermic reactions. The microchannel reactor is easily clogged, affecting the reaction efficiency and stability, and even causing damage to the microchannel reactor, affecting the use of the equipment; 2. The existing microchannel reactor requires filtering the reactants, and the filter is usually fixedly installed inside the equipment, which makes it inconvenient to quickly disassemble the filter and is not easy to clean and replace the filter. Utility Model Content

[0005] The purpose of the present utility model is to provide a microchannel reactor for high exothermic reactions of viscous liquids, so as to solve the problems of viscous liquid reactants and high exothermic reactants in the microchannel reactor proposed in the above background technology, which cause equipment blockage and inconvenience in removing the filter screen. In order to achieve the above purpose, the present utility model provides the following technical solutions: a microchannel reactor for high exothermic reactions of viscous liquids, comprising a pretreatment component, a plunger pump is installed on the right side surface of the pretreatment component, one end of a liquid inlet is installed on one side surface of the plunger pump, a microchannel reactor body is installed on the other end of the liquid inlet, a heat exchange plate is installed inside the microchannel reactor body, and a liquid outlet is installed on one side surface of the microchannel reactor body;

[0006] The pretreatment assembly includes a pretreatment chamber installed on one side surface of the plunger pump, a heater is installed on one side surface of the pretreatment chamber, a heating tube is installed on one end of the heater, a top cover is installed on the top surface of the pretreatment chamber, a servo motor is installed in the middle of the top of the top cover, a stirring rod is installed on the output end of the servo motor, a filter is installed on one side surface of the top of the top cover, a feed port is installed on the top of the filter, a main fixing block is installed on one side surface of the filter, a secondary fixing block is installed on the outer wall of the main fixing block, an annular sleeve is installed on one side surface of the secondary fixing block, an annular baffle is installed on the inner wall of the annular sleeve, a plug rod is installed on the inner wall of the annular baffle, and a spring is provided on the outside of the plug rod.

[0007] Further preferably, the shape of the heating tube is set to be spiral.

[0008] Further preferably, the servo motor and the stirring rod form a transmission mechanism.

[0009] Further preferably, mounting rods are provided at the four corners of the bottom of the feed port, and a mounting groove having an internal dimension structure consistent with the external dimension structure of the mounting rods is opened on the top surface of the filter screen.

[0010] Further preferably, a mounting groove having an internal dimension structure consistent with an external dimension structure of the filter screen is provided on the top surface of the top cover, and the filter screen and the top cover form a plug-in structure.

[0011] Further preferably, a circular hole having an internal dimension structure consistent with the external dimension structure of the insertion rod is opened on one side surface of the main fixing block, and the insertion rod forms an elastic mechanism with a spring through an annular baffle and an annular sleeve.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, the design of the pretreatment component is adopted. By arranging the pretreatment component at one end of the microchannel reactor body, the servo motor can be started, the servo motor drives the stirring rod to rotate, the reactant is stirred, and the heater is started, the heater heats the pretreatment chamber through the heating tube, so as to heat the reactant. By pretreating the reactant, the viscosity of the reactant can be effectively reduced, and the reactant is prevented from entering the microchannel reactor body and causing the microchannel reactor body to be blocked. In addition, a heat exchange plate is installed between the reaction plates of the microchannel reactor body, which can effectively absorb the heat generated during the reaction and avoid damage to the microchannel reactor body.

[0014] The utility model adopts a design that is easy to replace the filter screen. The feed port can be pulled out from the mounting groove on the top of the filter screen through the mounting rod, and then the insertion rod is pushed to one side to drive the annular baffle to move to one side. The spring is compressed to pull the insertion rod out of the circular hole of the main fixing block, and the filter screen is pulled out from the top cover. The filter screen can be cleaned and replaced to prevent impurities from clogging the filter screen and affecting the use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the explosion-enlarged structure of the pre-treatment component of the utility model;

[0017] Figure 3 This is an enlarged structural diagram of the top cover of the utility model;

[0018] Figure 4 This is a schematic diagram of the enlarged structure of the heating tube of the utility model;

[0019] Figure 5 This is a schematic diagram of the enlarged structure of the filter screen of the utility model;

[0020] Figure 6 It is a schematic diagram of the fully cutaway and enlarged structure of the plug rod of the utility model.

[0021] In the figure: 1. pretreatment component; 101. pretreatment chamber; 102. heater; 103. heating tube; 104. top cover; 105. servo motor; 106. stirring rod; 107. filter; 108. feed port; 109. main fixing block; 110. secondary fixing block; 111. annular sleeve; 112. annular baffle; 113. plug rod; 114. spring; 2. plunger pump; 3. liquid inlet; 4. microchannel reactor body; 5. heat exchange plate; 6. liquid outlet. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 6The utility model provides a technical solution: a microchannel reactor for high exothermic reaction of viscous liquid, comprising a pretreatment component 1, a plunger pump 2 is installed on the right surface of the pretreatment component 1, one end of a liquid inlet 3 is installed on one side surface of the plunger pump 2, a microchannel reactor body 4 is installed on the other end of the liquid inlet 3, a heat exchange plate 5 is installed inside the microchannel reactor body 4, and a liquid outlet 6 is installed on one side surface of the microchannel reactor body 4.

[0024] The pretreatment assembly 1 includes a pretreatment chamber 101 installed on one side surface of the plunger pump 2, a heater 102 is installed on one side surface of the pretreatment chamber 101, a heating tube 103 is installed on one end of the heater 102, a top cover 104 is installed on the top surface of the pretreatment chamber 101, a servo motor 105 is installed in the middle of the top of the top cover 104, a stirring rod 106 is installed on the output end of the servo motor 105, a filter screen 107 is installed on one side surface of the top of the top cover 104, a feed port 108 is installed on the top of the filter screen 107, a main fixing block 109 is installed on one side surface of the filter screen 107, a secondary fixing block 110 is installed on the outer wall of the main fixing block 109, an annular sleeve 111 is installed on one side surface of the secondary fixing block 110, an annular baffle 112 is installed on the inner wall of the annular sleeve 111, a plug 113 is installed on the inner wall of the annular baffle 112, and a spring 114 is provided on the outside of the plug 113.

[0025] In this embodiment, Figure 4 As shown, the shape of the heating tube 103 is set to be spiral; through this design, when the user delivers the reactant to the pretreatment chamber 101 through the feed port 108, the heater 102 can be started, and the heater 102 heats the pretreatment chamber 101 through the heating tube 103, thereby uniformly heating the reactant, which can effectively reduce the viscosity of the reactant and prevent the reactant from entering the microchannel reactor body 4 and causing the microchannel reactor body 4 to be blocked.

[0026] In this embodiment, Figure 3 As shown, the servo motor 105 and the stirring rod 106 constitute a transmission mechanism; through the transmission mechanism, the servo motor 105 can be started, and the servo motor 105 drives the stirring rod 106 to rotate, thereby stirring the reactants to make the reactants more uniform, which can effectively reduce the viscosity of the reactants.

[0027] In this embodiment, Figure 3 As shown, mounting rods are provided at the four corners of the bottom of the feed port 108, and a mounting groove whose internal dimension structure is consistent with the external dimension structure of the mounting rod is opened on the top surface of the filter screen 107; through this design, the feed port 108 can be quickly installed and disassembled with the filter screen 107 through the mounting rods and the mounting grooves.

[0028] In this embodiment, Figure 3 As shown, the top surface of the top cover 104 is provided with an installation groove whose internal dimension structure is consistent with the external dimension structure of the filter 107, and the filter 107 and the top cover 104 form a plug-in structure; it is convenient to plug and install and disassemble the filter 107 and the top cover 104, and it is convenient to clean and replace the filter 107 in time.

[0029] In this embodiment, Figure 6 As shown, a circular hole with an internal dimension structure consistent with the external dimension structure of the plug rod 113 is opened on the surface of one side of the main fixing block 109, and the plug rod 113 forms an elastic mechanism with the annular baffle 112 and the annular sleeve 111 and the spring 114; through this design, it is convenient to push the plug rod 113 to one side, drive the annular baffle 112 to move to one side, and the spring 114 is compressed to pull the plug rod 113 out of the circular hole of the main fixing block 109, so as to pull the filter screen 107 out of the top cover 104 and clean and replace the filter screen 107.

[0030] The use method and advantages of the utility model: The microchannel reactor used for high exothermic reaction of viscous liquid, when in use, has the following working process:

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, first, the reactant is poured into the pretreatment component 1 from the feed port 108, and first the reactant is filtered through the filter screen 107 so that the impurity particles in the reactant remain on the surface of the filter screen 107. The filtered reactant enters the interior of the filter chamber 101, and the servo motor 105 is started. The servo motor 105 drives the stirring rod 106 to rotate, thereby stirring the reactant, and the heater 102 is started. The heater 102 heats the pretreatment chamber 101 through the heating tube 103, thereby heating the reactant to reduce the viscosity of the reactant, and a solvent or additive can be used to add a solvent to the pretreatment chamber to reduce the viscosity of the reactant, so that it is easier to flow in the microchannel. Then, the reactants are transported to the microchannel reactor body 4 through the liquid inlet 3 by the plunger pump 2 for reaction. Heat exchange plates 5 are provided between the reaction plates inside the microchannel reactor body 4. Heat can be effectively absorbed by the heat exchange plates 5. If the filter 107 needs to be cleaned and replaced, the feed port 108 can be pulled out from the mounting groove at the top of the filter 107 through the mounting rod, and then the plug rod 113 is pushed to one side, driving the annular baffle 112 to move to one side, and the spring 114 is compressed to pull the plug rod 113 out of the circular hole of the main fixing block 109, and the filter 107 is pulled out from the top cover 104, and the filter 107 can be cleaned and replaced in time.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A microchannel reactor for highly exothermic reactions of viscous liquids, comprising a pretreatment component (1), characterized in that: A plunger pump (2) is installed on the right side surface of the pretreatment component (1), one end of a liquid inlet (3) is installed on one side surface of the plunger pump (2), a microchannel reactor body (4) is installed on the other end of the liquid inlet (3), a heat exchange plate (5) is installed inside the microchannel reactor body (4), and a liquid outlet (6) is installed on one side surface of the microchannel reactor body (4); The pretreatment assembly (1) comprises a pretreatment chamber (101) mounted on a side surface of a plunger pump (2); a heater (102) is mounted on a side surface of the pretreatment chamber (101); a heating tube (103) is mounted on one end of the heater (102); a top cover (104) is mounted on the top surface of the pretreatment chamber (101); a servo motor (105) is mounted in the middle of the top of the top cover (104); a stirring rod (106) is mounted on the output end of the servo motor (105); and a top surface of one side of the top of the top cover (104) is mounted. A filter screen (107) is provided with a feed port (108) at the top end of the filter screen (107); a main fixing block (109) is provided on one side surface of the filter screen (107); a secondary fixing block (110) is provided on the outer wall of the main fixing block (109); an annular sleeve (111) is provided on one side surface of the secondary fixing block (110); an annular baffle (112) is provided on the inner wall of the annular sleeve (111); an insert rod (113) is provided on the inner wall of the annular baffle (112); and a spring (114) is provided on the outside of the insert rod (113).

2. A microchannel reactor for high exothermic reaction of viscous liquid according to claim 1, characterized in that: The shape of the heating tube (103) is set to be spiral.

3. A microchannel reactor for high exothermic reaction of viscous liquid according to claim 1, characterized in that: The servo motor (105) and the stirring rod (106) form a transmission mechanism.

4. A microchannel reactor for high exothermic reaction of viscous liquid according to claim 1, characterized in that: The four corners of the bottom of the feed port (108) are each provided with a mounting rod, and the top surface of the filter screen (107) is provided with a mounting groove whose internal dimension structure is consistent with the external dimension structure of the mounting rod.

5. A microchannel reactor for high exothermic reaction of viscous liquid according to claim 1, characterized in that: The top surface of the top cover (104) is provided with a mounting groove whose internal dimension structure is consistent with the external dimension structure of the filter screen (107), and the filter screen (107) and the top cover (104) form a plug-in structure.

6. A microchannel reactor for high exothermic reaction of viscous liquid according to claim 1, characterized in that: A circular hole having an internal dimension structure consistent with the external dimension structure of the insertion rod (113) is opened on one side surface of the main fixing block (109), and the insertion rod (113) forms an elastic mechanism with a spring (114) through an annular baffle (112) and an annular sleeve (111).

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