Allylamine hydrochloride reactor

Abstract

The utility model discloses an allylamine hydrochloride reactor, and belongs to the technical field of allylamine hydrochloride production. The reactor comprises a reaction kettle, the reaction kettle is provided with a stirring assembly and a discharging pipe, the reaction kettle is resistant to acid and alkali corrosion, a feeding port and the discharging pipe can bear large pressure, the discharging pipe is located below a kettle body of the reaction kettle, and distilled water is contained in the reaction kettle; the hydrogen chloride feeding tank is communicated with the reaction kettle; an allyl amine feeding tank, wherein the allyl amine feeding tank is communicated with the reaction kettle; the feeding pipeline comprises an opening and closing valve, and the feeding pipeline is communicated with the reaction kettle and the hydrogen chloride feeding tank as well as the reaction kettle and the allylamine feeding tank; and the PH meter is used for measuring the mixture in the reaction kettle. The technical problem that an existing allylamine hydrochloride reactor is low in production efficiency is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of allylamine hydrochloride production, in particular to an allylamine hydrochloride reactor. Background Art

[0002] Allylamine hydrochloride is a colorless to pale yellow solution or crystalline solid. In the field of pharmaceutical synthesis, it is an important raw material in pharmaceutical synthesis and can be used to prepare a variety of drugs. In the field of printing and dyeing, it is a monomer of dyeing auxiliary.

[0003] Currently, allylamine hydrochloride is produced by dropwise adding allylamine to a jacketed or coiled reactor containing saturated hydrochloric acid. This reaction is very violent, requiring strict temperature control, and the reaction time is long, resulting in low production efficiency.

[0004] Therefore, an allylamine hydrochloride reactor is proposed to improve the production efficiency of allylamine hydrochloride. Utility Model Content

[0005] The main purpose of the utility model is to provide an allylamine hydrochloride reactor, aiming to improve the production efficiency of allylamine hydrochloride.

[0006] To achieve the above-mentioned purpose, the allylamine hydrochloride reactor proposed in the present invention comprises:

[0007] A reactor, comprising a stirring assembly and a discharge pipe, wherein the discharge pipe is located below the reactor body, and the reactor contains distilled water;

[0008] A hydrogen chloride feeding tank, the hydrogen chloride feeding tank being connected to the reactor;

[0009] an allylamine feeding tank, the allylamine feeding tank being connected to the reactor;

[0010] A feeding pipeline, comprising an on-off valve, connecting the reactor with the hydrogen chloride feeding tank and the reactor with the allylamine feeding tank;

[0011] A pH meter is used to measure the mixture in the reactor.

[0012] Optionally, in one embodiment of the present invention, the discharge pipe is a transparent discharge pipe.

[0013] Optionally, in one embodiment of the present invention, the discharge pipe is made of transparent fiberglass.

[0014] Optionally, in one embodiment of the present invention, a heat exchange spiral tube is further included, and the heat exchange spiral tube surrounds the inner wall of the reactor.

[0015] Optionally, in an embodiment of the present invention, the feed pipeline is divided into a hydrogen chloride pipeline and an allylamine pipeline, the hydrogen chloride pipeline extends below the distilled water liquid level, and the allylamine pipeline is located above the distilled water liquid level.

[0016] Optionally, in an embodiment of the present invention, the feeding pipeline further includes a flow meter, and the flow meter is located on a side of the on-off valve away from the reactor.

[0017] Optionally, in one embodiment of the present invention, a temperature sensor is further included, and the temperature sensor measures the internal temperature of the reactor.

[0018] Optionally, in one embodiment of the present invention, the discharge pipe is provided with an opening and closing valve.

[0019] Compared with the prior art, the utility model can at least achieve the following beneficial effects. The reaction of producing allylamine hydrochloride using the method of dripping allylamine in hydrochloric acid is very intense. When the reaction is intense, it is necessary to suspend the addition of reactants, and it is necessary for production personnel to strictly control the reaction temperature, so the production efficiency of this method is relatively low. In the present application, before hydrochloric acid is mixed with allylamine, there is distilled water in the reactor, and the distilled water is cooled to a predetermined temperature. During the temperature drop, a stirring assembly is used to stir and cool the distilled water. At the start of production, hydrogen chloride gas is first added to the reactor by a hydrogen chloride feeding tank, and hydrogen chloride gas and distilled water merge to form hydrochloric acid. During the formation of hydrochloric acid, a pH meter is observed. After the solution reaches a predetermined pH value, the addition of hydrogen chloride gas is stopped and allylamine is started to be added. By adding allylamine, the pH value of the mixture gradually turns to alkalinity. After the mixture reaches a predetermined alkaline pH value, the addition of allylamine is stopped and hydrogen chloride gas is added. The above steps are repeated until the product reaches the specified concentration. Since the concentrations of hydrochloric acid and allylamine in each cycle are low, the intensity of the mixed reaction can be reduced, the reactants can be added quickly, the production process is shortened, and production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 This is a structural schematic diagram of an allylamine hydrochloride reactor of the utility model.

[0022] Description of Figure Numbers:

[0023] 100, reactor; 110, stirring assembly; 120, discharge pipe; 130, heat exchange spiral tube; 200, hydrogen chloride feeding tank; 300, allylamine feeding tank; 410, hydrogen chloride pipeline; 420, allylamine pipeline; 430, flow meter; 500, pH meter; 600, on-off valve; 700, temperature sensor;

[0024] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] Reference Figure 1 The utility model provides an allylamine hydrochloride reactor, comprising:

[0030] The reactor 100 includes a stirring assembly 110 and a discharge pipe 120. The discharge pipe 120 is located below the reactor body 100. The reactor 100 contains distilled water.

[0031] The hydrogen chloride feeding tank 200 is connected to the reactor 100;

[0032] Allylamine feeding tank 300, the allylamine feeding tank 300 is connected to the reactor 100;

[0033] The feeding pipeline includes an on-off valve 600, and the feeding pipeline connects the reactor 100 with the hydrogen chloride feeding tank 200 and the reactor 100 with the allylamine feeding tank 300;

[0034] pH meter 500: The pH meter 500 measures the mixture in the reaction kettle 100.

[0035] The reaction of producing allylamine hydrochloride using the mode of dripping allylamine in hydrochloric acid is very violent, and when the reaction is violent, it is necessary to suspend the increase of reactant, and it is necessary for production staff to strictly control the reaction temperature, so the production efficiency of this mode is relatively low. In the present application, before hydrochloric acid mixes with allylamine, there is distilled water in reactor 100, and distilled water is cooled to a predetermined temperature. During the temperature-fall period, distilled water is stirred and cooled using stirring assembly 110. When production starts, hydrogen chloride gas is first added to reactor 100 by hydrogen chloride feeding tank 200, hydrogen chloride gas and distilled water merge to form hydrochloric acid, in the process forming hydrochloric acid, pH meter 500 is observed, after solution reaches predetermined pH value, hydrogen chloride gas is stopped and allylamine is started to be added, by adding allylamine, the pH value of mixture gradually turns to alkalescence, and after mixture reaches predetermined alkaline pH value, the addition of stopping allylamine is turned to add hydrogen chloride gas. The above steps are repeated until the product reaches the specified concentration. Since the concentrations of hydrochloric acid and allylamine in each cycle are low, the intensity of the mixed reaction can be reduced, the reactants can be added quickly, the production process is shortened, and production efficiency is improved.

[0036] It should be noted that, depending on the actual production site, the hydrogen chloride feeding tank 200 and the allylamine feeding tank 300 can be located farther away from the reactor 100. The figure only illustrates the connection relationship between the hydrogen chloride feeding tank 200, the allylamine feeding tank 300 and the reactor 100, and does not limit the specific structure of the hydrogen chloride feeding tank 200 and the allylamine feeding tank 300.

[0037] In addition, traditional production methods produce a fixed concentration of the product after reaction. If a higher concentration is required, negative pressure heating is required for concentration. However, heating causes the product to turn yellow and degrades its quality. This reactor can directly produce the product at a specified concentration, eliminating the need for subsequent heating and purification operations.

[0038] Furthermore, the discharge pipe 120 is a transparent discharge pipe 120, specifically made of transparent fiberglass. After the concentration of allylamine hydrochloride reaches a certain level, it turns into a solid state. At this time, the mixture in the reactor 100 is a solid-liquid mixture. In order to facilitate the separate reception and storage of products in different states, the discharge pipe 120 is designed to be a transparent discharge pipe 120. When the solid and liquid products are separated, the solid product is located below the reactor 100, and the liquid product is located above the solid product. When the discharge pipe 120 is opened, the solid product is discharged along with part of the liquid product. The state of the remaining product is observed through the transparent discharge pipe 120. When the solid product is completely discharged, the container is replaced to store the liquid product. After the solid product is dried, a solid product without moisture can be obtained. In addition, the discharge pipe 120 is provided with an opening and closing valve 600 to control it.

[0039] Preferably, the transparent discharge tube 120 is made of transparent fiberglass. Transparent fiberglass is formed by mixing fiberglass cloth and resin. Due to the properties of the resin, transparent fiberglass has good chemical stability and can resist corrosion from a variety of chemical media, including hydrochloric acid, allylamine, and allylamine hydrochloride.

[0040] In addition, in order to ensure the normal progress of the reaction and smooth feeding and discharging, the material of the reactor 100 needs to be resistant to acid and alkali corrosion, and the reactor 100, the feed port and the discharge pipe 120 need to be able to withstand greater pressure.

[0041] Furthermore, the reactor includes a heat exchange coil 130, which surrounds the outer circumference of the reactor 100. During the production of allylamine hydrochloride, the reaction temperature must be controlled, and before production begins, the temperature of the distilled water in the reactor 100 must be controlled. The heat exchange coil 130 is used to regulate the temperature of the reactor 100. The spiral structure can extend the residence time of the heat exchange medium within the heat exchange tube, ensuring more efficient heat exchange. As the heat exchange medium flows within the coil, the direction of the fluid often changes due to the winding structure of the tube, creating localized turbulence. This turbulent effect can enhance the heat transfer process and improve the heat exchange effect.

[0042] In order to further improve the heat exchange capacity of the heat exchange spiral tube 130 and quickly adjust the temperature of the reactor 100, a spoiler is provided in the tube to generate more turbulence during the flow of the heat exchange medium in the heat exchange spiral tube 130.

[0043] In order to control the temperature of the reactor 100 , a temperature sensor 700 is provided to control the temperature inside the reactor 100 so as to adjust the heat exchange coil 130 in a timely manner.

[0044] When adding hydrogen chloride gas and allylamine solution, hydrogen chloride pipeline 410 and allylamine pipeline 420 are used to transport them to reactor 100, respectively. Hydrogen chloride pipeline 410 extends to the bottom of reactor 100, ensuring it is below the distilled water level, while allylamine pipeline 420 extends to the top of reactor 100, ensuring it is above the distilled water level. During operation, after hydrogen chloride gas is introduced into reactor 100, it must first be mixed with distilled water to form hydrochloric acid. Extending hydrogen chloride pipeline 410 below the distilled water level ensures that the hydrogen chloride gas and distilled water are fully mixed. The allylamine pipeline 420 is located above the distilled water level to prevent the mixed solution from entering allylamine pipeline 420 and preventing any reaction within the allylamine pipeline 420.

[0045] In addition, to facilitate control of the amount of reactants added, a flow meter 430 is installed on each feed pipe, and the flow meter 430 is located on the side of the on-off valve 600 facing away from the reactor 100. Since the reactants experience pressure changes when passing through the on-off valve 600, this pressure change will have a certain impact on the reactants. To ensure accurate measurement by the flow meter 430, the reactants are allowed to flow through the flow meter 430 in the pipe before flowing through the on-off valve 600.

[0046] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by utilizing the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An allylamine hydrochloride reactor, characterized in that, include: A reactor, comprising a stirring assembly and a discharge pipe, wherein the discharge pipe is located below the reactor body, and the reactor contains distilled water; A hydrogen chloride feeding tank, the hydrogen chloride feeding tank being connected to the reactor; an allylamine feeding tank, the allylamine feeding tank being connected to the reactor; A feeding pipeline, comprising an on-off valve, connecting the reactor with the hydrogen chloride feeding tank and the reactor with the allylamine feeding tank; A pH meter is used to measure the mixture in the reactor.

2. The allylamine hydrochloride reactor according to claim 1, wherein The discharge pipe is a transparent discharge pipe.

3. The allylamine hydrochloride reactor according to claim 2, wherein The discharge pipe is made of transparent glass fiber reinforced plastic.

4. The allylamine hydrochloride reactor according to claim 1, wherein It also includes a heat exchange spiral tube, which surrounds the inner wall of the reactor.

5. The allylamine hydrochloride reactor according to claim 4, wherein A spoiler is provided inside the heat exchange spiral tube.

6. The allylamine hydrochloride reactor according to claim 1, wherein The feeding pipeline is divided into a hydrogen chloride pipeline and an allylamine pipeline. The hydrogen chloride pipeline extends below the distilled water liquid level, and the allylamine pipeline is located above the distilled water liquid level.

7. The allylamine hydrochloride reactor according to claim 1 or 6, wherein The feeding pipeline further includes a flow meter, which is located on a side of the on-off valve away from the reactor.

8. The allylamine hydrochloride reactor according to claim 1, wherein The reactor further comprises a temperature sensor, which measures the internal temperature of the reactor.

9. The allylamine hydrochloride reactor according to claim 1, wherein The discharge pipe is provided with an opening and closing valve.

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