Tubular micro-channel continuous flow reactor

Abstract

The utility model relates to the technical field of micro-channel continuous reaction, in particular to a tubular micro-channel continuous flow reactor. Comprising a reactor body, the upper end and the lower end of the reactor body are fixedly communicated with end sockets and heat carrier pipes, the end sockets are fixedly communicated with material pipes, the end sockets are communicated with a tube pass of the reactor body, and the heat carrier pipes are communicated with a shell pass of the reactor body; a middle piece is fixedly and hermetically connected between the two end pieces. The tubular micro-channel continuous flow reactor is divided into the two end pieces and the middle piece, the micro-channel reaction tubes in the two end pieces and the middle piece are combined to form the main reaction tube, and when the micro-channel reaction tubes in the end pieces or the middle piece are blocked or damaged, only the blocked micro-channel reaction tubes need to be replaced, the whole main reaction tube does not need to be replaced, and therefore the operation is convenient. The maintenance cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to the microchannel continuous reaction technical field, specifically relates to tubular microchannel continuous flow reactor. BACKGROUND

[0002] Creatine, also known as muscle essence, is an energy reserve substance existing in muscle tissue, which can be used for drug manufacturing, energy supplements, food additives, etc.

[0003] In the production process of monohydrate creatine, first, monomethylamine gas and chloroacetic acid aqueous solution are pumped into the microchannel continuous reactor I at the same time for reaction to generate sarcosine aqueous solution; then the sarcosine aqueous solution and sodium hydroxide solution are pumped into the microchannel continuous reactor II at the same time for neutralization reaction, and after the reaction, vacuum distillation is carried out to obtain concentrated sarcosine aqueous solution; then the concentrated sarcosine aqueous solution and monocyanoamine aqueous solution are pumped into the tubular reactor III at the same time for reaction to obtain creatine reaction liquid; finally, the creatine reaction liquid is post-treated to obtain monohydrate creatine.

[0004] The patent file with publication number CN205164690U discloses an intelligent industrial microchannel continuous reactor, which effectively reduces the mass transfer resistance of the reaction materials, shortens the reaction time, and reduces the side reactions by inserting a three-dimensional microchannel assembly in the reaction tube. At the same time, by inserting a three-dimensional microchannel assembly in the reaction tube, the liquid phase reaction materials form a liquid film in the reaction tube, which is beneficial to the full mixing and reaction of the reaction materials. The heat generated or required during the reaction is immediately exchanged with the reaction tube through the heat carrier in the shell, effectively improving the heat transfer efficiency. It has the following advantages: it greatly reduces the mass transfer resistance between the reaction materials, can quickly conduct the reaction heat energy, shortens the reaction time, reduces the back mixing and side reactions, reduces or eliminates the use of solvents, saves energy and reduces emissions, increases the yield, improves the production efficiency, is safe and reliable, environmentally friendly and clean, and can greatly reduce the investment and operating cost.

[0005] In the structure of the tubular microchannel continuous flow reactor, the reaction tube is generally fixed in the shell, and the reaction tube is not convenient to replace. After the tubular microchannel continuous flow reactor is used for a period of time, the reaction tube part is prone to blockage. The general tubular microchannel continuous flow reactor needs to replace the whole reaction tube, but the reaction tube with an inserted three-dimensional microchannel assembly has a high cost, and the whole replacement will increase the use cost. UTILITY MODEL CONTENT

[0006] The main purpose of the utility model is to provide a tubular microchannel continuous flow reactor which can replace the reaction tube in sections and is convenient to replace the reaction tube.

[0007] In order to achieve the above purpose, the technical scheme provided by the utility model is:

[0008] The tubular micro-channel continuous flow reactor comprises a reactor body, a head and a heat carrier tube fixedly communicated with the upper and lower ends of the reactor body, a material pipe fixedly communicated with the head, the head being in communication with the tube passage of the reactor body, the heat carrier tube being in communication with the shell passage of the reactor body, and the reactor body comprising two end pieces symmetrically arranged at the upper and lower ends and an intermediate piece fixedly and sealingly connected between the two end pieces.

[0009] Specifically, the end piece comprises an end shell body, the end shell body being detachably, fixedly and sealingly connected with the head at one side thereof, an installation plate and a first stabilizing disc being arranged in the end shell body, the installation plate being fixed in the end shell body, the first stabilizing disc being slidingly arranged in the end shell body, the installation plate being close to the head on the end shell body, a plurality of first through holes being formed in the first stabilizing disc, a plurality of micro-channel reaction tubes being arranged in the end shell body, the micro-channel reaction tubes penetrating through the installation plate and the first stabilizing disc, the micro-channel reaction tubes being sealingly connected with the installation plate and the first stabilizing disc, a grating plate being slidingly arranged in the end shell body between the head and the installation plate, the grating plate being tightly abutted against one end of the micro-channel reaction tube at one side thereof, a bracket being arranged in the end shell body between the grating plate and the head, the bracket being detachably fixed with the installation plate; the intermediate piece comprises an intermediate shell body, the intermediate shell body being detachably, fixedly and sealingly connected with the end shell body, two second stabilizing discs being slidingly connected in the intermediate shell body, a plurality of micro-channel reaction tubes being arranged in the intermediate shell body, the number of the micro-channel reaction tubes in the intermediate shell body being equal to and corresponding to the number of the micro-channel reaction tubes in the end shell body, the micro-channel reaction tubes in the intermediate shell body being sealingly communicated with the micro-channel reaction tubes in the end shell body through a communication pipe.

[0010] Specifically, the micro-channel reaction tube comprises a tube body, sealing pieces being arranged at both sides of the tube body in the axial direction, the sealing pieces comprising taper sleeves fixedly and sealingly connected with the tube body, a top ring being fixed on the tube body to block the taper sleeves, the taper sleeves at both sides of the tube body of the micro-channel reaction tube in the end shell body being sealingly inserted into taper holes on the installation plate and the first stabilizing disc, respectively, the taper sleeves at both sides of the tube body of the micro-channel reaction tube in the intermediate shell body being sealingly inserted into taper holes on the two second stabilizing discs, respectively.

[0011] Specifically, the bracket comprises a plurality of ring plates with gradually increasing diameters from inside to outside, and adjacent two ring plates are fixedly connected through a plurality of connecting rods.

[0012] Specifically, the bolt penetrates through the hole on the ring plate and is threadedly connected with the installation plate.

[0013] Specifically, a sealing layer is fixed in the communication pipe, one end of the tube body of the micro-channel reaction tube in the end shell body is sealingly inserted into the communication pipe towards the intermediate piece, and one end of the tube body of the micro-channel reaction tube in the intermediate shell body is sealingly inserted into the communication pipe towards the end piece.

[0014] Specific, the cone sleeve is made of high temperature resistant rubber material.

[0015] Specific, the lower end of the cone sleeve on the pipe body of the micro-channel reaction tube in the lower end shell is smaller in diameter than the upper end.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1, this tubular micro-channel continuous flow reactor is divided into two end pieces and an intermediate piece, the micro-channel reaction tube in the two end pieces and an intermediate piece is combined to form a total reaction tube, when the micro-channel reaction tube in the end piece or the intermediate piece is blocked or damaged, only the blocked micro-channel reaction tube needs to be replaced, the whole total reaction tube does not need to be replaced, and the maintenance cost is low.

[0018] 2, after the end piece and the intermediate piece are separated, the micro-channel reaction tube in the intermediate piece can be directly pulled out, after the end piece and the head are separated, the micro-channel reaction tube in the end piece can be directly pulled out after the support and the grid plate are disassembled, and the micro-channel reaction tube is convenient to replace. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view of the utility model.

[0020] Figure 2 It is a sectional view of the utility model.

[0021] Figure 3 It is Figure 2 It is an enlarged view of the middle A area.

[0022] Figure 4 It is Figure 2 It is an enlarged view of the middle B area.

[0023] Figure 5 It is a schematic view of the support.

[0024] Figure 6 It is a schematic view of the cooperation of the grid plate, the pipe body and the mounting plate in the lower end shell.

[0025] The names of parts in the drawings are as follows: 1, head, 2, end piece, 3, intermediate piece, 4, heat carrier pipe, 5, material pipe, 6, end shell, 7, intermediate shell, 8, mounting plate, 9, support, 901, ring plate, 902, connecting rod, 10, grid plate, 11, bolt, 12, micro-channel reaction tube, 121, pipe body, 13, cone sleeve, 14, top ring, 15, first stabilizing disc, 16, first through hole, 17, connecting pipe, 18, second stabilizing disc, 19, second through hole. DETAILED DESCRIPTION

[0026] Clearly, the described embodiments are only a part of the embodiments of the present application, not all the embodiments.

[0027] Embodiment one: refer to Figures 1-6 As shown in the figure, the tubular micro-channel continuous flow reactor comprises a reactor body, the upper and lower ends of the reactor body are fixedly connected with a head 1 and a heat carrier pipe 4, the head 1 is fixedly connected with a feed pipe 5, the head 1 is in communication with the tube side of the reactor body, and the heat carrier pipe 4 is in communication with the shell side of the reactor body.

[0028] The reactor body comprises two end pieces 2 symmetrically arranged upward and downward, and an intermediate piece 3 is fixedly and sealingly connected between the two end pieces 2.

[0029] The end piece 2 comprises an end shell body 6, the end shell body 6 is detachably, fixedly and sealingly connected with the head 1 on one side thereof, the end shell body 6 is provided with a mounting plate 8 and a first stabilizing disc 15, the mounting plate 8 is fixed in the end shell body 6, the first stabilizing disc 15 is slidingly arranged in the end shell body 6, the mounting plate 8 is close to the head 1 on the end shell body 6, a plurality of first through holes 16 are formed in the first stabilizing disc 15, a plurality of micro-channel reaction pipes 12 are arranged in the end shell body 6, the micro-channel reaction pipes 12 penetrate through the mounting plate 8 and the first stabilizing disc 15, the micro-channel reaction pipes 12 are sealingly connected with the mounting plate 8 and the first stabilizing disc 15, a grating plate 10 is slidingly arranged in the end shell body 6 between the head 1 and the mounting plate 8, the grating plate 10 abuts against one end of the micro-channel reaction pipe 12 on one side thereof, a supporting piece 9 abutting against the grating plate 10 is arranged in the end shell body 6 between the grating plate 10 and the head 1, and the bracket is detachably fixedly connected with the mounting plate 8.

[0030] Specifically, the supporting piece 9 comprises a plurality of ring plates 901 with gradually increasing diameters from inside to position, and adjacent two ring plates 901 are fixedly connected through a plurality of connecting rods 902.

[0031] The intermediate piece 3 comprises an intermediate shell body 7, the intermediate shell body 7 is detachably, fixedly and sealingly connected with the end shell body 6, two second stabilizing discs 18 arranged upward and downward are slidingly connected in the intermediate shell body 7, a plurality of second through holes 19 are formed in each second stabilizing disc 18, and a plurality of micro-channel reaction pipes 12 are arranged in the intermediate shell body 7.

[0032] The number of the micro-channel reaction pipes 12 in the intermediate shell body 7 is equal to and corresponds to the number of the micro-channel reaction pipes 12 in the end shell body 6, and the micro-channel reaction pipes 12 in the intermediate shell body 7 are sealingly communicated with the micro-channel reaction pipes 12 in the end shell body 6 through the communication pipes 17.

[0033] Specifically, the communication pipe 17 is fixed with a sealing layer, and the pipe body 121 of the micro-channel reaction pipe 12 in the end shell 6 is sealingly inserted into the communication pipe 17 towards one end of the intermediate piece 3, and the pipe body 121 of the micro-channel reaction pipe 12 in the intermediate shell 7 is sealingly inserted into the communication pipe 17 towards one end of the end piece 2.

[0034] The micro-channel reaction pipe 12 comprises a pipe body 121, and the pipe body 121 is provided with a sealing piece on both sides in the axial direction.

[0035] The sealing piece comprises a taper sleeve 13 fixedly and sealingly connected to the pipe body 121, and the pipe body 121 is fixed with a top ring 14 for blocking the taper sleeve 13, and the taper sleeves 13 on both sides of the pipe body 121 of the micro-channel reaction pipe 12 in the end shell 6 are sealingly inserted into the taper holes in the mounting plate 8 and the first stabilizing disc 15, respectively, and the taper sleeves 13 on both sides of the pipe body 121 of the micro-channel reaction pipe 12 in the intermediate shell 7 are sealingly inserted into the taper holes in the two second stabilizing discs 18, respectively. Specifically, the upper end diameter of the taper sleeve 13 on the pipe body 121 of the micro-channel reaction pipe 12 in the lower end shell 6 is smaller than the lower end diameter. Since the two end pieces 2 are symmetrical, the upper end diameter of the taper sleeve 13 on the pipe body 121 of the micro-channel reaction pipe 12 in the upper end shell 6 is larger than the lower end diameter.

[0036] The grid plate 10 abuts against the end of the micro-channel reaction pipe 12 in the end shell 6, so that the taper sleeve 13 on the micro-channel reaction pipe 12 in the end shell 6 close to the mounting plate 8 can be sealingly inserted into the taper hole in the mounting plate 8, preventing the heat carrier from entering the head 1.

[0037] The heat carrier enters the shell side through one of the heat carrier pipes 4 and is discharged from the other heat carrier pipe 4. The reactants react during the flow in the tube side.

[0038] The tubular micro-channel continuous flow reactor is divided into two end pieces 2 and one intermediate piece 3, and the micro-channel reaction pipes 12 in the two end pieces 2 and the intermediate piece 3 are combined to form a total reaction pipe. When the micro-channel reaction pipe 12 in the end piece 2 or the intermediate piece 3 is blocked or damaged, only the blocked micro-channel reaction pipe 12 needs to be replaced, without the need to replace the entire total reaction pipe, thereby reducing the maintenance cost.

[0039] After the end piece 2 and the intermediate piece 3 are separated, the micro-channel reaction pipe 12 in the intermediate piece 3 can be directly pulled out. After the end piece 2 and the head 1 are separated, the micro-channel reaction pipe 12 in the end piece 2 can be directly pulled out after the support 9 and the grid plate 10 are removed, so that the micro-channel reaction pipe 12 is convenient to replace.

[0040] In the production of monohydrate creatine, monomethylamine gas and 70% chloroacetic acid solution are pumped into the tubular microchannel continuous flow reactor at a volume flow ratio of 1.2:1 to prepare a sarcosine aqueous solution, the reaction temperature is 10℃, and the residence time is 8min.

[0041] In the preparation of a sarcosine salt aqueous solution, a 32% sodium hydroxide solution and a sarcosine aqueous solution are pumped into the tubular microchannel continuous flow reactor at a volume flow ratio of 0.5:1 to prepare a sarcosine salt aqueous solution, the reaction temperature is 30℃, and the residence time is 2min.

[0042] The concentrated sarcosine salt aqueous solution and a 30% monocyanoamine aqueous solution are pumped into the tubular reactor at a volume flow ratio of 1:1.2 to prepare a creatine reaction solution, the reaction temperature is 75℃, and the residence time is 20min.

[0043] In example two, the cone sleeve 13 is made of high-temperature-resistant rubber material.

[0044] The cone sleeve 13 made of high-temperature-resistant rubber material is applied to the tubular microchannel continuous flow reactor, which can improve the service life.

[0045] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A tubular microchannel continuous flow reactor, comprising a reactor body, wherein both upper and lower ends of the reactor body are fixedly connected to a head (1) and a heat carrier tube (4), a material pipe (5) is fixedly connected to the head (1), the head (1) is connected to the tube side of the reactor body, and the heat carrier tube (4) is connected to the shell side of the reactor body, characterized in that: The reactor body comprises two end pieces (2) symmetrically arranged up and down, and an intermediate piece (3) fixedly and sealingly connected between the two end pieces (2); the end piece (2) comprises an end shell (6) which is detachably and fixedly and sealingly connected with a head (1) on one side thereof, and the end shell (6) is provided with a mounting plate (8) and a first stabilizing disc (15) therein, the mounting plate (8) is fixed in the end shell (6), and the first stabilizing disc (15) is slidingly arranged in the end shell (6), the mounting plate (8) is close to the head (1) on the end shell (6), a plurality of first through holes (16) are formed in the first stabilizing disc (15), a plurality of micro-channel reaction tubes (12) are arranged in the end shell (6), the micro-channel reaction tubes (12) penetrate through the mounting plate (8) and the first stabilizing disc (15), the micro-channel reaction tubes (12) are sealingly connected with the mounting plate (8) and the first stabilizing disc (15), a grating plate (10) is slidingly arranged in the end shell (6) between the head (1) and the mounting plate (8), the grating plate (10) abuts against one end of the micro-channel reaction tube (12) on one side thereof, a bracket (9) abutting against the grating plate (10) is arranged in the end shell (6) between the grating plate (10) and the head (1), and the bracket is detachably and fixedly connected with the mounting plate (8); the intermediate piece (3) comprises an intermediate shell (7) which is detachably and fixedly and sealingly connected with the end shell (6), and two second stabilizing discs (18) are slidingly connected in the intermediate shell (7), a plurality of second through holes (19) are formed in each of the second stabilizing discs (18), a plurality of micro-channel reaction tubes (12) are arranged in the intermediate shell (7), the number of the micro-channel reaction tubes (12) in the intermediate shell (7) is equal to and corresponds to the number of the micro-channel reaction tubes (12) in the end shell (6), and the micro-channel reaction tubes (12) in the intermediate shell (7) are sealingly communicated with the micro-channel reaction tubes (12) in the end shell (6) through communication pipes (17).

2. The tubular microchannel continuous flow reactor of claim 1, wherein, The micro-channel reaction tube (12) comprises a tube body (121), and sealing members are arranged on both sides of the tube body (121) in the axial direction, the sealing members comprise a taper sleeve (13) fixedly and sealingly connected with the tube body (121), and a top ring (14) is fixed on the tube body (121) to block the taper sleeve (13), the taper sleeves (13) on both sides of the tube body (121) of the micro-channel reaction tube (12) in the end shell (6) are sealingly inserted into taper holes on the mounting plate (8) and the first stabilizing disc (15), and the taper sleeves (13) on both sides of the tube body (121) of the micro-channel reaction tube (12) in the intermediate shell (7) are sealingly inserted into taper holes on the two second stabilizing discs (18).

3. The continuous tubular microchannel flow reactor of claim 1 wherein, The bracket (9) comprises a plurality of ring plates (901) with gradually increasing diameters from inside to outside, and adjacent two ring plates (901) are fixedly connected through a plurality of connecting rods (902).

4. The tubular microchannel continuous flow reactor of claim 3, wherein, The bolt (11) is screwed with the mounting plate (8) after penetrating through the hole on the ring plate (901).

5. The continuous tubular microchannel flow reactor of claim 1 wherein, The communication pipe (17) is fixed with a sealing layer, and the pipe body (121) of the micro-channel reaction pipe (12) in the end shell (6) is sealingly inserted into the communication pipe (17) towards one end of the intermediate part (3), and the pipe body (121) of the micro-channel reaction pipe (12) in the intermediate shell (7) is sealingly inserted into the communication pipe (17) towards one end of the end part (2).

6. The tubular microchannel continuous flow reactor of claim 2, wherein, The taper sleeve (13) is made of high-temperature-resistant rubber material.

7. The continuous tubular microchannel flow reactor of claim 2, wherein, The taper sleeve (13) on the pipe body (121) of the micro-channel reaction pipe (12) in the lower end shell (6) has a smaller upper end diameter than a lower end diameter.

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