A continuous production system for sodium sarcosinate

Abstract

This invention discloses a continuous production system for sodium sarcosinate, comprising a cyanation reaction unit, an amination reaction unit, and a hydrolysis reaction unit. The hydrolysis reaction unit includes a hydrolysis kettle, the gas phase outlet of which is connected to an ammonia absorption tower. The cyanation reaction unit includes a three-stage cyanation reactor, the outlet of which is connected to a gas-liquid separator. This invention, by installing an inlet pressurized tank at the inlet of the ammonia absorption tower, employs a dual-pressurized piston alternating working structure within the tank, combined with a multi-branched and porous design on the gas distribution pipe, to uniformly disperse pressurized ammonia into the absorption tower, creating a good airflow effect. This significantly increases the contact area and contact time between ammonia and the dilute sulfuric acid absorbent, thereby improving the ammonia absorption efficiency and reaction rate, ensuring the full recovery of ammonia produced by the hydrolysis reaction, and avoiding environmental pollution and safety risks caused by ammonia leakage.

Description

Technical Field

[0001] This invention relates to the field of sodium sarcosinate production technology, and in particular to a continuous production system for sodium sarcosinate. Background Technology

[0002] Sodium sarcosinate is an important chemical intermediate widely used in food additives, flavoring agents, dye dispersants, and sports nutrition supplements. Currently, one of the mainstream industrial methods for producing sodium sarcosinate is the hydroxyacetonitrile process, which involves three steps: cyanation, amination, and hydrolysis. First, hydrogen cyanide reacts with formaldehyde to produce hydroxyacetonitrile; second, hydroxyacetonitrile reacts with monomethylamine to produce methylaminoacetonitrile; finally, methylaminoacetonitrile reacts with liquid alkali to hydrolyze and produce sodium sarcosinate.

[0003] In existing production processes, a large amount of ammonia gas is generated during the hydrolysis reaction stage. Improper handling of this ammonia gas can easily cause a sudden increase in pressure within the reactor, leading to the risk of material spillage. This not only affects production safety but also causes environmental pollution. Traditional ammonia gas treatment methods often involve simple water washing or direct discharge, which fails to meet environmental emission standards and wastes ammonia resources.

[0004] In the cyanide reaction unit, after hydrogen cyanide reacts with formaldehyde to produce hydroxyacetonitrile, the reaction system still contains unreacted hydrogen cyanide gas. Hydrogen cyanide is a highly toxic chemical. If it is not completely separated and enters the subsequent acidification process with the liquid phase, it may suddenly desorb and release a large amount during the acidification process due to drastic pH changes, causing local pressure increases or the risk of highly toxic gas leakage, posing a serious threat to production safety and personnel health. Existing gas-liquid separation devices mostly use simple cyclone separation or gravity sedimentation, which have limited separation efficiency and are difficult to meet the separation requirements of highly toxic gases.

[0005] To address the aforementioned issues, developing a continuous production system for sodium sarcosinate that can efficiently absorb ammonia produced by hydrolysis and completely separate the tail gas from the cyanide reaction is of significant practical importance and application value. Summary of the Invention

[0006] To address the problems mentioned in the background section, this invention provides a continuous production system for sodium sarcosinate.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A continuous production system for sodium sarcosinate includes a cyanation reaction unit, an amination reaction unit, and a hydrolysis reaction unit. The hydrolysis reaction unit includes a hydrolysis reactor, and the gas phase outlet of the hydrolysis reactor is connected to an ammonia absorption tower.

[0009] The cyanidation reaction unit includes a three-stage cyanidation reactor, the outlet of which is connected to a gas-liquid separator.

[0010] The ammonia absorption tower has an inlet pressurized gas tank at its inlet and a gas distribution pipe fixed at its outlet. A dilute sulfuric acid solution is added to the bottom of the ammonia absorption tower, and the ammonia absorption tower is equipped with a circulating spray pipe. The absorbent is circulated to the top of the ammonia absorption tower for spraying by a circulating pump. The circulating spray pipe is connected in series with a heat exchanger to absorb the heat of reaction.

[0011] Preferably, the gas distribution pipe has multiple gas distribution branches on both sides, and multiple gas outlet holes are evenly opened on the gas distribution branches.

[0012] Preferably, the air inlet of the pressurized air tank is provided on the side away from the outlet, and the air inlet of the pressurized air tank is provided with a partition liner that divides the air inlet of the pressurized air tank into two symmetrical pressurization spaces, and a pressurization piston is horizontally slidably installed inside the pressurization space.

[0013] Preferably, the pressurizing piston is driven to move horizontally reciprocally by a horizontal drive mechanism. The pressurizing piston has an opening and closing port, and a gravity-closing thin plate is rotatably installed on the side of the pressurizing piston near the air outlet. Both sides of the upper and lower pressurizing spaces in the partition liner are provided with through holes, and a rotary switching shaft is provided inside the pressurizing space. The rotary switching shaft passes through the pressurizing piston through the through holes, and a circular sealing plate is fixed to one end of the rotary switching shaft inside the pressurizing space by a first connecting rod.

[0014] Preferably, the circular sealing plate slides in contact with the inner wall of the partition liner, and the circular sealing plate corresponds to and matches the through hole. A helical guide rail is fixed on the side of the first connecting rod away from the inner wall of the partition liner, and a trigger crossbar is fixed on the side of the pressurizing piston near the helical guide rail. The helical guide rails located in the upper and lower pressurizing spaces are located on opposite sides in the horizontal direction.

[0015] Preferably, one end of the rotary switching shaft extends through the partition liner to the outside of the pressurized space and is fixed with a second connecting rod. A tension spring is connected to the second connecting rod, and a first limiting block and a second limiting block are respectively provided on both sides of the second connecting rod on the outer wall of the partition liner. The other end of the rotary switching shaft extends through the partition liner to the outside of the other side of the pressurized space and is fixed with a first synchronous gear. Two intermediate gears are also provided between the two first synchronous gears and mesh with each other in sequence.

[0016] Preferably, the horizontal drive mechanism includes a reciprocating lead screw, which passes through a threaded hole through a pressurizing piston, and a second synchronous gear is fixed at one end of the reciprocating lead screw. One of the reciprocating lead screws is driven to rotate by a first rotary motor, and a synchronous gear ring is rotatably installed on the outside of the air outlet. Both second synchronous gears mesh with the synchronous gear ring.

[0017] Preferably, the gas-liquid separator has an outlet pipe at the top and a drain port at the bottom. An inlet pipe is located on one side of the gas-liquid separator near the bottom. The gas-liquid separator has multiple rotating baffles arranged in a rectangular array inside. The upper half of the rotating baffle is longer than its lower half. When the rotating baffle is rotated to an inclined state, the lower halves of the same row of rotating baffles come into contact with each other and close, and there is a gap between the upper halves of the same row of rotating baffles.

[0018] Preferably, one end of the rotating baffle extends to the outside of the gas-liquid separator and is fixed with a third synchronous gear. The third synchronous gears in the same row mesh sequentially, and the first third synchronous gear in each row is fixed to the output shaft of a second rotating motor.

[0019] Preferably, one end of the air inlet pipe extends into the interior of the gas-liquid separator and is fixed with a horizontal distributor, the top of which has multiple openings.

[0020] Preferably, the gas-liquid separator is equipped with multiple lifting brackets that are movable inside, and cleaning brushes are fixed on both sides of each lifting bracket.

[0021] Preferably, guide sliders are fixed on both sides of the cleaning brush, and the guide sliders are slidably installed in vertical guide grooves on the inner walls of both sides of the gas-liquid separator.

[0022] Preferably, the top and bottom ends of the guide slider are both fixed with tension, and the end of the tension away from the guide slider extends slidably to the outside of the gas-liquid separator through a through hole and is fixed with a pull ring.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. This invention, by setting an inlet pressurizing tank at the inlet of the ammonia absorption tower, and employing a dual-pressurizing piston alternating working structure inside the tank, combined with the multi-branch and multi-hole design on the gas distribution pipe, can pressurize and uniformly disperse ammonia into the absorption tower, forming a good airflow effect. This significantly increases the contact area and contact time between ammonia and dilute sulfuric acid absorbent, thereby improving the absorption efficiency and reaction rate of ammonia, ensuring that the ammonia produced by the hydrolysis reaction is fully recovered, and avoiding environmental pollution and safety risks caused by ammonia leakage.

[0025] 2. The gas-liquid separator employs a rectangular array of rotating baffles. The upper half of the baffles is longer than the lower half. When operating at an angle, the lower halves of the same row of baffles are in contact and closed, while the upper halves remain open, forming multiple layers of tortuous channels. As the liquid-containing gas flows upward, it is blocked and intercepted layer by layer. Liquid droplets are efficiently captured by impacting the baffles due to inertia. The separated gas is discharged from the top, significantly reducing the amount of liquid entrained in the gas and ensuring the cleanliness of the gas entering subsequent processes.

[0026] 3. The rotating baffle of the gas-liquid separator can be driven to rotate synchronously by a second rotary motor, quickly switching between the working state (tilted) and the cleaning state (vertical). When the baffle is switched to the vertical state, the lifting bracket is driven to slide up and down by the pull ring, and the cleaning brush can clean the baffle in all directions, solving the problem of difficult cleaning inside traditional separators, extending the service life of the equipment, and ensuring long-term stable operation.

[0027] 4. The dual pressurizing pistons inside the air intake pressurizing tank are driven by a reciprocating screw and a synchronous gear mechanism to achieve automated reciprocating motion; the rotary switching shaft cooperates with the trigger crossbar through a helical guide rail to automatically switch the opening and closing state of the through hole; the entire ammonia absorption and gas-liquid separation process can be automatically controlled, reducing manual intervention and lowering operational risks. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram showing the connection between the hydrolysis reactor and the ammonia absorption tower of the present invention;

[0030] Figure 2 This is a top view of the air intake pressurization tank of the present invention;

[0031] Figure 3 This is a front view of the air intake pressurization tank of the present invention;

[0032] Figure 4 This is a perspective view of the air intake pressurization tank of the present invention;

[0033] Figure 5 This is a front-view sectional view of the air intake pressurization tank of the present invention;

[0034] Figure 6 This is a first-view perspective view of the partition liner of the present invention;

[0035] Figure 7This is a second perspective view of the partition liner of the present invention;

[0036] Figure 8 for Figure 6 Enlarged detail image of position A in the middle;

[0037] Figure 9 for Figure 7 Enlarged detail image of position B in the middle;

[0038] Figure 10 This is a front-view sectional view of the gas-liquid separator of the present invention;

[0039] Figure 11 for Figure 10 Enlarged detail image of the C position;

[0040] Figure 12 This is a schematic diagram of the rotating baffle in the gas-liquid separator of the present invention in an inclined state (working state);

[0041] Figure 13 This is a schematic diagram of the rotating baffle in the gas-liquid separator of the present invention rotating to a vertical state (cleaning state);

[0042] Figure 14 This is a rear view of the gas-liquid separator of the present invention;

[0043] Figure 15 This is a schematic diagram of the distribution of the third synchronous gear from the rear view of the gas-liquid separator of the present invention;

[0044] Figure 16 This is a perspective view of the lifting bracket of the present invention;

[0045] In the diagram: 1. Hydrolysis vessel; 2. Ammonia absorption tower; 3. Heat exchanger; 4. Circulating pump; 6. Inlet pressurizing tank; 7. Gas-liquid separator; 601. Outlet; 602. Inlet; 603. Separating liner; 6031. Pressurizing piston; 6032. Opening and closing port; 6033. Gravity closing plate; 6034. Through hole; 604. Reciprocating screw; 6041. Second synchronous gear; 6042. Synchronous gear ring; 6043. First rotary motor; 605. Rotary switching shaft; 6051. First connecting rod; 6052. Circular sealing plate; 6053. Helical guide rail; 6054. Trigger crossbar; 6055. Second connecting rod; 605 6. Pull spring; 6057. First limit stop; 6058. Second limit stop; 6059. First synchronous gear; 6060. Intermediate gear; 607. Gas distribution pipe; 6071. Gas distribution branch; 6072. Gas outlet; 701. Inlet pipe; 7011. Horizontal distributor; 7012. Opening; 702. Drain outlet; 703. Gas outlet pipe; 704. Rotating baffle; 7041. Third synchronous gear; 7042. Second rotary motor; 705. Vertical guide groove; 7051. Guide slider; 7052. Lifting bracket; 7053. Cleaning brush; 7054. Tensioner; 7055. Pull ring. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example 1

[0048] Reference Figure 1-16 A continuous production system for sodium sarcosinate includes a cyanation reaction unit, an amination reaction unit, and a hydrolysis reaction unit. The hydrolysis reaction unit includes a hydrolysis reactor 1, and the gas phase outlet of the hydrolysis reactor is connected to an ammonia absorption tower 2.

[0049] Inside the ammonia absorption tower 2, upward-flowing ammonia gas (from the hydrolysis vessel 1) comes into countercurrent contact with downward-sprayed dilute sulfuric acid solution, resulting in the following exothermic reaction: gaseous ammonia reacts with the dilute sulfuric acid to form ammonium sulfate solution, thereby absorbing the ammonia gas.

[0050] The cyanidation reaction unit includes a three-stage cyanidation reactor, the outlet of which is connected to a gas-liquid separator 7.

[0051] The ammonia absorption tower 2 has an inlet pressurized inlet tank 6 at its inlet. The outlet 601 of the pressurized inlet tank 6 is fixed with a gas distribution pipe 607. A dilute sulfuric acid solution is added to the bottom of the ammonia absorption tower 2. The ammonia absorption tower 2 is equipped with a circulating spray pipe. The absorbent is circulated to the top of the ammonia absorption tower 2 for spraying by a circulating pump 4. The circulating spray pipe is connected in series with the heat exchanger 3 to absorb the heat of reaction.

[0052] The gas distribution pipe 607 has multiple gas distribution branches 6071 on both sides, and multiple gas outlets 6072 are evenly distributed on the gas distribution branches 6071. Ammonia gas is evenly dispersed through the gas distribution pipe 607 and enters the ammonia absorption tower 2, where it comes into full contact with the dilute sulfuric acid absorbent sprayed from top to bottom. The absorption tower 2 is filled with a packing layer, and the dilute sulfuric acid solution is stored at the bottom of the tower. The circulating pump 4 draws out the absorbent from the bottom of the tower, cools it through a heat exchanger, and then sends it to the spray nozzle at the top of the tower for downward spraying. Ammonia gas and dilute sulfuric acid come into countercurrent contact on the surface of the packing layer, undergoing a neutralization reaction to produce ammonium sulfate. The heat of reaction is continuously removed by the heat exchanger 3.

[0053] The air intake pressurizing tank 6 has an air intake 602 on the side away from the air outlet 601. The air intake pressurizing tank 6 has an internal partition liner 603 that divides the interior into two symmetrical pressurizing spaces. A pressurizing piston 6031 is horizontally slidably mounted inside each pressurizing space. The pressurizing piston 6031 is driven to reciprocate horizontally by a horizontal drive mechanism. An opening / closing port 6032 is provided on the pressurizing piston 6031, and a rotating part is mounted on the side of the pressurizing piston 6031 closest to the air outlet 601. The gravity-closed thin plate 6033 has through holes 6034 on both sides of the upper and lower pressurized spaces in the inner liner 603. A rotary switching shaft 605 is located inside each pressurized space, and the rotary switching shaft 605 movably passes through the pressurized piston 6031 via the through holes. One end of the rotary switching shaft 605 is located inside the pressurized space, and a circular sealing plate 6052 is fixed to it via a first connecting rod 6051. When the upper pressurized piston 6031 moves to the left (at which point it is in the air intake state), the lower pressurized piston 6031 moves to the right. (At this time, in the exhaust state), the two pressurizing pistons 6031 alternately perform air replenishment and pressurized exhaust, thus enabling continuous air intake and pressurized exhaust. When the pressurizing piston 6031 moves to the left, the gravity-closed thin plate 6033 is blown up by air pressure. At this time, the opening 6032 opens, allowing gas to pass through the pressurizing piston 6031 to the right side of the pressurizing piston 6031. At this time, the right through hole 6034 of this pressurized space is blocked by the circular sealing plate 6052, and the left through hole 6034 is open, thus allowing... The gas is transferred to the pressurized space to the right of the pressurized piston 6031. When the pressurized piston 6031 moves to the right, the combined force of gravity and air pressure pushes the gravity-closing plate 6033 to block the opening and closing port 6032. At this time, the gas will not pass through the opening and closing port 6032, and the rotating switching shaft 605 rotates by an angle, so that the opening and closing states of the two through holes 6034 are exchanged, thereby enabling the gas to be quickly squeezed out and then pressurized and ejected from the gas outlet 6072, thereby creating a flow effect, improving the gas-liquid mixing effect, and increasing the absorption rate.

[0054] To automatically drive the rotary switching shaft 605 to rotate and switch the opening and closing states of the two through holes 6034, the circular sealing plate 6052 slides in contact with the inner wall of the partition liner 603, and the circular sealing plate 6052 corresponds to and matches the through hole 6034. A helical guide rail 6053 is fixed on the side of the first connecting rod 6051 away from the inner wall of the partition liner 603. A trigger crossbar 6054 is fixed on the side of the pressurizing piston 6031 near the helical guide rail 6053. The helical guide rail 6053 located in the upper and lower pressurizing spaces is on the opposite side in the horizontal direction. When the pressurizing piston 6031 moves to one side, the trigger crossbar 6054 contacts the helical guide rail 6053, converting the horizontal movement into the rotation of the switching shaft 605, thereby achieving the purpose of switching the opening and closing states of the two through holes 6034.

[0055] One end of the upper rotary switching shaft 605 extends through the partition liner 603 to the outside of the pressurized space and is fixed with a second connecting rod 6055. A tension spring 6056 is connected to the second connecting rod 6055. A first limiting block 6057 and a second limiting block 6058 are respectively provided on both sides of the second connecting rod 6055 on the outer wall of the partition liner 603. The other end of the rotary switching shaft 605 extends through the partition liner 603 to the outside of the other side of the pressurized space and is fixed with a first synchronizing gear 6059. Two intermediate gears 6060 are also provided between the two first synchronizing gears 6059 and mesh sequentially. The two rotary switching shafts 605 are synchronized through gear meshing, so that when the upper and lower pressurizing pistons 6031 move, they can simultaneously push the two rotary switching shafts 605 to rotate and switch.

[0056] The horizontal drive mechanism includes a reciprocating lead screw 604, which passes through a threaded hole through a pressurizing piston 6031. One end of the reciprocating lead screw 604 is fixed with a second synchronous gear 6041. One of the reciprocating lead screws 604 is driven to rotate by a first rotary motor 6043. A synchronous gear ring 6042 is rotatably mounted on the outside of the air outlet 601. Both second synchronous gears 6041 mesh with the synchronous gear ring 6042. The first rotary motor 6043 can drive one of the reciprocating lead screws 604 to rotate, and then the second synchronous gear 6041 meshing with the synchronous gear ring 6042 can drive the other reciprocating lead screw 604 to rotate, thereby driving the two pressurizing pistons 6031 to move horizontally reciprocally.

[0057] The gas-liquid separator 7 has an outlet pipe 703 at its top and a drain port 702 at its bottom. An inlet pipe 701 is located near the bottom on one side of the gas-liquid separator 7. Multiple rotating baffles 704 are arranged in a rectangular array inside the gas-liquid separator 7. The upper half of each rotating baffle 704 is longer than its lower half. When the rotating baffle 704 rotates to an inclined position, the lower halves of the same row of rotating baffles 704 contact and close each other, while gaps remain between the upper halves of the same row of rotating baffles 704. Figure 12 As shown, when the gas moves upward, it is blocked by the upper rotating baffle 704 and then flows through the gap to the next upper layer, thus achieving a layered blocking effect, thereby blocking and separating the small liquid particles mixed in the gas. When all the rotating baffles 704 rotate to... Figure 13 In the vertical position, the rotating baffle 704 can be easily cleaned and scrubbed.

[0058] One end of the rotating baffle 704 extends to the outside of the gas-liquid separator 7 and is fixed with a third synchronous gear 7041. The third synchronous gears 7041 in the same row mesh sequentially, and the first third synchronous gear 7041 in each row is fixed to the output shaft of a second rotary motor 7042. Adjacent second rotary motors 7042 in each row rotate in different directions, thus enabling the rotating baffle 704 to quickly rotate through the rotation of the second rotary motor 7042. Figure 12 and Figure 13 Switching between two states.

[0059] One end of the air inlet pipe 701 extends into the interior of the gas-liquid separator 7 and is fixed with a horizontal distributor 7011. The top of the horizontal distributor 7011 has multiple openings 7012, which can disperse the air intake, so that the gas can be blown evenly to the row of rotating baffles 704, thereby improving the droplet blocking effect.

[0060] The gas-liquid separator 7 is internally equipped with multiple lifting brackets 7052. Cleaning brushes 7053 are fixed to both sides of each lifting bracket 7052, and guide sliders 7051 are fixed to both sides of each cleaning brush 7053. The guide sliders 7051 are slidably mounted within vertical guide grooves 705 on the inner walls of both sides of the gas-liquid separator 7. Tensioners 7054 are fixed to the top and bottom of each guide slider 7051. The end of the tensioner 7054 away from the guide slider 7051 extends slidably through a through-hole to the outside of the gas-liquid separator 7 and is fixed with a pull ring 7055. When the rotating baffle 704 is switched to... Figure 13 When in the active state, the rotating baffle 704 can be actively brushed by pulling the cleaning brush 7053 up and down by pulling the ring 7055.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0062] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0064] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A continuous production system for sodium sarcosinate, comprising a cyanation reaction unit, an amination reaction unit, and a hydrolysis reaction unit, characterized in that: The hydrolysis reaction unit includes a hydrolysis reactor (1), and the gas phase outlet of the hydrolysis reactor is connected to an ammonia absorption tower (2). The cyanidation reaction unit includes a three-stage cyanidation reactor, the outlet of which is connected to a gas-liquid separator (7). The ammonia absorption tower (2) is equipped with an inlet pressurized gas tank (6) at its inlet. The outlet (601) of the pressurized gas tank (6) is fixed with a gas distribution pipe (607). A dilute sulfuric acid solution is added to the bottom of the ammonia absorption tower (2). The ammonia absorption tower (2) is equipped with a circulating spray pipe. The absorbent is circulated to the top of the ammonia absorption tower (2) for spraying by a circulating pump (4). The circulating spray pipe is connected in series with a heat exchanger (3) to absorb the heat of reaction.

2. The continuous production system for sodium sarcosinate according to claim 1, characterized in that: The gas distribution pipe (607) has multiple gas distribution branches (6071) on both sides, and multiple gas outlet holes (6072) are evenly opened on the gas distribution branches (6071).

3. The continuous production system for sodium sarcosinate according to claim 2, characterized in that: The air inlet pressurizing tank (6) has an air inlet (602) on the side away from the air outlet (601). The air inlet pressurizing tank (6) has a partition liner (603) inside. The partition liner (603) divides the air inlet pressurizing tank (6) into two vertically symmetrical pressurizing spaces, and a pressurizing piston (6031) is horizontally slidably installed inside the pressurizing space.

4. The continuous production system for sodium sarcosinate according to claim 1, characterized in that: The pressurizing piston (6031) is driven to move horizontally and reciprocally by a horizontal drive mechanism. The pressurizing piston (6031) has an opening and closing port (6032), and a gravity closing thin plate (6033) is rotatably installed on the side of the pressurizing piston (6031) near the air outlet (601). Both sides of the upper and lower pressurizing spaces in the separating liner (603) are provided with through holes (6034), and a rotating switching shaft (605) is provided inside the pressurizing space. The rotating switching shaft (605) moves through the pressurizing piston (6031) through the through hole, and a circular sealing plate (6052) is fixed inside the pressurizing space by the first connecting rod (6051).

5. The continuous production system for sodium sarcosinate according to claim 4, characterized in that: The circular sealing plate (6052) slides in contact with the inner wall of the partition liner (603), and the circular sealing plate (6052) corresponds to the through hole (6034). The first connecting rod (6051) is fixed with a helical guide rail (6053) on the side away from the inner wall of the partition liner (603). The pressurizing piston (6031) is fixed with a trigger crossbar (6054) on the side near the helical guide rail (6053). The helical guide rail (6053) located in the upper and lower pressurizing spaces is located on the opposite side in the horizontal direction.

6. The continuous production system for sodium sarcosinate according to claim 5, characterized in that: One end of the rotary switching shaft (605) extends through the partition liner (603) to the outside of the pressurized space and is fixed with a second connecting rod (6055). A tension spring (6056) is connected to the second connecting rod (6055). A first limiting block (6057) and a second limiting block (6058) are respectively provided on both sides of the second connecting rod (6055) on the outer wall of the partition liner (603). The other end of the rotary switching shaft (605) extends through the partition liner (603) to the outside of the other side of the pressurized space and is fixed with a first synchronous gear (6059). Two intermediate gears (6060) are also provided between the two first synchronous gears (6059) and mesh with each other in sequence.

7. The continuous production system for sodium sarcosinate according to claim 4, characterized in that: The horizontal drive mechanism includes a reciprocating lead screw (604), which passes through a threaded hole through a pressurizing piston (6031). One end of the reciprocating lead screw (604) is fixed with a second synchronous gear (6041). One of the reciprocating lead screws (604) is driven to rotate by a first rotary motor (6043). A synchronous gear ring (6042) is rotatably installed on the outside of the air outlet (601). Both second synchronous gears (6041) mesh with the synchronous gear ring (6042).

8. The continuous production system for sodium sarcosinate according to claim 1, characterized in that: The gas-liquid separator (7) has an outlet pipe (703) at the top and a drain port (702) at the bottom. An inlet pipe (701) is located on one side of the gas-liquid separator (7) near the bottom. Multiple rotating baffles (704) are distributed in a rectangular array inside the gas-liquid separator (7). The upper half of the rotating baffle (704) is longer than its lower half. When the rotating baffle (704) is rotated to an inclined state, the lower half of the same row of rotating baffles (704) contacts and closes with each other, and there is a gap between the upper half of the same row of rotating baffles (704).

9. The continuous production system for sodium sarcosinate according to claim 8, characterized in that: One end of the rotating baffle (704) extends to the outside of the gas-liquid separator (7) and is fixed with a third synchronous gear (7041). The third synchronous gears (7041) in the same row mesh sequentially, and the first third synchronous gear (7041) in each row is fixed to the output shaft of a second rotating motor (7042).

10. The continuous production system for sodium sarcosinate according to claim 8, characterized in that: One end of the air inlet pipe (701) extends into the interior of the gas-liquid separator (7) and is fixed with a horizontal distributor (7011), the top of which has multiple openings (7012).

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