A production device and process for bisaminosilane coupling agent

Abstract

The present invention discloses a production device and process of a bisaminosilane coupling agent, and belongs to the field of silane coupling agent preparation. A production device of a bisaminosilane coupling agent of the present invention comprises: a synthesis kettle and an installation box, wherein a reaction box, a distillation box and a salt washing box are installed inside the synthesis kettle; a feed pipe is provided on one side of the upper end of the first metering tank and the second metering tank; a delivery pump is installed between the centrifuge and the salt washing box. The present invention solves the problems that the existing preparation method of silane coupling agents is simple, the loss of resources is large, and the environmental protection effect is poor. The salt washing box can perform secondary processing on the lower turbid liquid, and centrifuge it through a centrifuge to obtain a wet product of ethylenediamine hydrochloride, and the centrifuged liquid is introduced into an auxiliary workshop for purification treatment, and the ethylenediamine hydrochloride is driven into a rake dryer, and sodium chloride solid can be obtained by adding ethylenediamine monohydrate and sodium hydroxide, thereby maximizing the utilization of raw materials and reducing the loss of resources.

Description

Technical Field

[0001] The invention relates to the technical field of silane coupling agent preparation, in particular to a production device and process of a bisaminosilane coupling agent. Background Art

[0002] Silane coupling agents are an important class of organosilicon compounds with a wide range of uses. Commonly used ones include acyloxysilanes, aminosilanes, epoxysilanes, etc. Aminosilane coupling agents are generally prepared by substitution reactions of amine compounds with chlorosilanes, including monoamino, diamino, triamino and polyaminosilanes, with monoamino and diaminosilanes being more commonly used. Monoaminosilane is prepared using liquid ammonia and chlorosilanes, with high reaction pressure, long reaction time, many by-products, and low yield; diaminosilane is prepared using ethylenediamine and chlorosilanes, with mild reaction conditions and high yield, and is mainly used in sealants, casting, textile auxiliaries, plastic modification and other fields.

[0003] In the prior art, the preparation method of bisaminosilane is relatively simple. The production process is mainly divided into synthesis, separation, distillation, neutralization, drying, etc. Each process requires a separate device to implement. There is a certain distance between the equipment, which occupies a large area. The time required to move and transport materials is long, and the by-products are not handled in time, which affects the output and quality of the product.

[0004] In view of these defects, it is necessary to design a production device and process for a bisaminosilane coupling agent. Summary of the invention

[0005] The purpose of the present invention is to provide a production device and process for a bisaminosilane coupling agent, which can solve the problems of the existing silane coupling agent preparation method being simple, having large resource loss and poor environmental protection effect.

[0006] To achieve the above object, the present invention provides the following technical solution: a production device for a bisaminosilane coupling agent, comprising:

[0007] A synthesis kettle, which is used for mixing raw materials. A reaction box, a distillation box and a salt washing box are installed inside the synthesis kettle. The salt washing box is located below the distillation box, and the distillation box is located below the reaction box.

[0008] Also included are:

[0009] Installation boxes, two installation boxes for installing the processing structure are provided, the two installation boxes are respectively located at the front end and the rear end of the synthesis kettle, and one side of the installation box extends to the inside of the synthesis kettle and fits with the outer side of the reaction box, the distillation box and the salt washing box respectively;

[0010] The first metering tank and the second metering tank are used for transferring the ethylenediamine raw material and the chloropropyl alkoxysilane raw material, and are respectively located on both sides of the synthesis reactor. The first metering tank and the second metering tank are both provided with a feed pipe on one side of the upper end;

[0011] A centrifuge, which is used for centrifugally settling turbid liquid, is located on one side below the synthesis reactor, and a delivery pump is installed between the centrifuge and the salt washing box;

[0012] A rake dryer for collecting solid sodium chloride is located on one side of the outside of the centrifuge, a connecting pipe is installed between the rake dryer and the centrifuge, a feeding pipe is installed at the upper end of the rake dryer, and a discharge pipe is provided at the lower end of the rake dryer.

[0013] Preferably, a servo motor is installed at the upper end of the synthesis kettle, a connecting shaft is installed below the servo motor, a stirring paddle is installed outside the connecting shaft, and the connecting shaft passes through the reaction box, the distillation box and the salt washing box and is rotatably connected to the reaction box, the distillation box and the salt washing box through a sealing sleeve.

[0014] Preferably, a manhole is provided at the upper end of the synthesis kettle, the installation box is sealed and connected to the synthesis kettle through a sealing layer, a vacuum pump, a steam generator and a primary water-cooled condenser are installed inside the installation box, and the vacuum pump is used to control the internal air pressure of the salt washing box and the distillation box.

[0015] Preferably, two metering pumps are provided, the discharge ports of the first metering tank and the second metering tank are respectively connected to the two metering pumps, the liquid guide pipes of the two metering pumps are both connected to the liquid inlet pipe of the synthesis kettle, and the liquid inlet pipe of the synthesis kettle extends to the interior of the reaction box and is sealed and connected to the synthesis kettle.

[0016] Preferably, metering valves are installed between the reaction box and the distillation box and between the distillation box and the salt washing box. The reaction box and the distillation box are connected through the metering valve, and the distillation box and the salt washing box are connected through the metering valve.

[0017] Preferably, the reaction box, distillation box and salt washing box are each provided with a reaction chamber, the reaction chamber is provided with a feed chute, the feed chute is sealed and connected to the metering valve via a flange, heaters are installed outside the reaction box, distillation box and salt washing box, steam delivery pipes are installed on both sides of the outside of the heater, and the steam delivery pipes are connected to the installation box.

[0018] Preferably, a feed valve is installed between the centrifuge and the delivery pump, a drum is installed inside the centrifuge, a motor is installed at the lower end of the drum, and a material receiving box is surrounded by the outside of the drum. The material receiving box is rotatably connected to the drum through a shaft sleeve, and the material receiving box is used to collect the liquid phase. The drum is connected to a rake dryer through a connecting pipe, and rake teeth and a knocking rod are installed inside the rake dryer.

[0019] A process for producing a bisaminosilane coupling agent comprises the following steps:

[0020] Step 1: Ethylenediamine is pumped from the tank area storage tank into the first metering tank, added to the synthesis kettle via the metering pump, heated to 50-70°C, and the heating is stopped. Chloropropyl alkoxysilane is pumped from the tank area storage tank into the second metering tank, added to the synthesis kettle via the metering pump, and the addition is completed within 3 hours. After heating to 100-110°C and keeping warm in the reaction box for 2-3 hours, ethylenediamine is recovered and stored in a cool and ventilated warehouse until the temperature of the synthesis kettle reaches 140°C. The material is cooled to below 60°C and pumped into the distillation box;

[0021] Step 2: The material is placed in the distillation box for 3-4 hours, the lower turbid liquid is put into the salt washing box through the metering valve, and the supernatant liquid remains in the distillation box;

[0022] Step 3: Maintain the vacuum degree of the distillation box at 0.098 kpa through a vacuum pump, heat the distillation box through a steam generator, and start collecting ethylenediamine when the kettle temperature reaches 60°C and store it in a cool, ventilated warehouse until the kettle temperature reaches 120°C to obtain a semi-finished product, continue to heat up the distillation, and use a primary water-cooled condensation method to collect the finished product until the kettle temperature reaches 160°C, and the collection of the finished product is completed;

[0023] Step 4: After the turbid liquid is put into the salt washing box, the vacuum of the salt washing box is maintained at 0.098kpa by a vacuum pump, and the temperature is raised to 60℃~120℃. The recovered ethylenediamine is stored in a cool and ventilated warehouse. After the recovery is completed, the temperature is lowered to 30~40℃, and the solvent is added and stirred for 1~2h. The wet product of ethylenediamine hydrochloride is obtained by centrifugation through a delivery pump, and the centrifugal liquid collected in the receiving box is introduced into the auxiliary workshop for purification. The ethylenediamine hydrochloride is separated by a rotary drum and then transported to a rake dryer;

[0024] Step 5: Add ethylenediamine monohydrate to the rake dryer through the feeding tube, stir and dissolve, then add a certain amount of sodium hydroxide, maintain the vacuum at 0.098 kpa, start to recover ethylenediamine monohydrate when the temperature rises to 60°C, and stop when the temperature rises to 110°C. After cooling down, collect the sodium chloride solid in the rake dryer through the discharge pipe.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The production device and process of the bisaminosilane coupling agent, in the preparation work, by setting a layered structure inside the synthesis kettle, solutions with different mixing degrees can be layered, and different types of reaction liquids can be processed separately, so as to improve the processing effect. The raw materials are cooled after being synthesized in the reaction box in the synthesis kettle and are put into the distillation box. The materials are layered after standing in the distillation box, and the lower turbid liquid is put into the salt washing box through the metering valve, and the supernatant is left in the distillation box, so as to perform separate processing. The lower turbid liquid can be processed twice by the salt washing box, and the wet product of ethylenediamine hydrochloride can be obtained by centrifugation through a centrifuge. The centrifuge liquid collected in the material collection box is introduced into the auxiliary workshop for purification treatment. The ethylenediamine hydrochloride is transported to the rake dryer after separation by a rotary drum. Sodium chloride solid can be obtained by adding ethylenediamine monohydrate and sodium hydroxide, so as to maximize the use of raw materials, reduce the loss of resources, and help improve the environmental protection effect.

[0027] 2. The production device and process of the bisaminosilane coupling agent can save the floor space of the equipment and the time required for moving and transporting materials by arranging a reaction box, a distillation box and a salt washing box inside the synthesis kettle, thereby improving the preparation effect. In addition, the modular synthesis kettle is convenient for disassembly and assembly, maintenance and repair, and cleaning, which is conducive to long-term work. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is an axonometric view of the present invention from the side;

[0029] Figure 2 It is an axonometric view of the present invention from above;

[0030] Figure 3 is an axonometric view of the present invention from the rear;

[0031] Figure 4 The internal structure diagram of the synthesis reactor of the present invention;

[0032] Figure 5 It is an axonometric view of the reaction box of the present invention from above;

[0033] Figure 6 It is the internal structure diagram of the centrifuge and rake dryer of the present invention.

[0034] In the figure: 1. synthesis kettle; 101. servo motor; 1011. connecting shaft; 1012. stirring paddle; 102. manhole; 103. installation box; 104. reaction box; 1041. reaction chamber; 1042. discharge chute; 1043. heater; 1044. steam delivery pipe; 1045. sealing sleeve; 105. distillation box; 106. salt washing box; 107. metering valve; 2. first metering tank; 201. feed pipe; 3. second metering tank; 4. metering pump; 5. centrifuge; 501. feed valve; 502. drum; 503. material collection box; 504. motor; 6. rake dryer; 601. discharge pipe; 602. feeding pipe; 603. rake teeth; 604. knocking rod; 7. delivery pump. DETAILED DESCRIPTION

[0035] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0036] In order to solve the technical problems in the prior art that the preparation method of silane coupling agent is simple, the resource loss is large, and the environmental protection effect is poor, please refer to Figure 1-Figure 3 , providing the following technical solutions:

[0037] A production device for a bisaminosilane coupling agent, comprising:

[0038] Synthesis reactor 1, synthesis reactor 1 is used for mixing raw materials, and a reaction box 104, a distillation box 105 and a salt washing box 106 are installed inside the synthesis reactor 1. The salt washing box 106 is located below the distillation box 105, and the distillation box 105 is located below the reaction box 104;

[0039] Also included are:

[0040] Installation boxes 103, two installation boxes 103 for installing the processing structure are provided, and the two installation boxes 103 are respectively located at the front end and the rear end of the synthesis reactor 1, and one side of the installation box 103 extends to the inside of the synthesis reactor 1 and fits with the outer side of the reaction box 104, the distillation box 105 and the salt washing box 106;

[0041] The first metering tank 2 and the second metering tank 3 are used for transferring the ethylenediamine raw material and the chloropropyl alkoxysilane raw material. The first metering tank 2 and the second metering tank 3 are respectively located on both sides of the synthesis reactor 1. The upper ends of the first metering tank 2 and the second metering tank 3 are both provided with a feed pipe 201;

[0042] A centrifuge 5 for centrifugally settling turbid liquid is located at one side below the synthesis reactor 1, and a delivery pump 7 is installed between the centrifuge 5 and the salt washing box 106;

[0043] The rake dryer 6 for collecting solid-phase sodium chloride is located on one side of the outside of the centrifuge 5. A connecting pipe is installed between the rake dryer 6 and the centrifuge 5. A feeding pipe 602 is installed at the upper end of the rake dryer 6, and a discharge pipe 601 is provided at the lower end of the rake dryer 6.

[0044] Two metering pumps 4 are provided, and the discharge ports of the first metering tank 2 and the second metering tank 3 are respectively connected to the two metering pumps 4, and the liquid guide pipes of the two metering pumps 4 are both connected to the liquid inlet pipe of the synthesis reactor 1, and the liquid inlet pipe of the synthesis reactor 1 extends to the inside of the reaction box 104 and is sealed and connected to the synthesis reactor 1.

[0045] Specifically, in the preparation work, by setting a layered structure inside the synthesis reactor 1, solutions with different mixing degrees can be layered, and different types of reaction solutions can be processed separately, thereby improving the processing effect. The raw materials are cooled after being synthesized in the reaction box 104 in the synthesis reactor 1 and are pumped into the distillation box 105. The materials are layered after standing in the distillation box 105. The lower turbid liquid is put into the salt washing box 106 through the metering valve 107, and the supernatant is left in the distillation box 105, so as to be processed separately. The lower turbid liquid can be processed secondary by the salt washing box 106, and the wet product of ethylenediamine hydrochloride is obtained by centrifugation through the centrifuge 5. The centrifuge liquid collected in the material collection box 503 is introduced into the auxiliary workshop for purification treatment. The ethylenediamine hydrochloride is separated by the drum 502 and transported to the rake dryer 6. Sodium chloride solid can be obtained by adding ethylenediamine monohydrate and sodium hydroxide, thereby maximizing the utilization of raw materials, reducing resource loss, and being conducive to improving environmental protection effects.

[0046] In order to solve the technical problems in the prior art that the structure of the synthesis device is simple, the stratification device occupies a large area, and affects the working environment, please refer to Figure 1 , Figure 4 - Figure 5 , providing the following technical solutions:

[0047] A servo motor 101 is installed at the upper end of the synthesis reactor 1, a connecting shaft 1011 is installed below the servo motor 101, a stirring paddle 1012 is installed outside the connecting shaft 1011, and the connecting shaft 1011 passes through the reaction box 104, the distillation box 105 and the salt washing box 106 and is rotatably connected to the reaction box 104, the distillation box 105 and the salt washing box 106 through a sealing sleeve 1045.

[0048] A manhole 102 is provided at the upper end of the synthesis reactor 1, and the installation box 103 is sealed and connected to the synthesis reactor 1 through a sealing layer. A vacuum pump, a steam generator and a primary water-cooled condenser are installed inside the installation box 103, and the vacuum pump is used to control the internal air pressure of the salt washing box 106 and the distillation box 105.

[0049] Metering valves 107 are installed between the reaction box 104 and the distillation box 105 and between the distillation box 105 and the salt washing box 106 . The reaction box 104 and the distillation box 105 are connected through the metering valve 107 , and the distillation box 105 and the salt washing box 106 are connected through the metering valve 107 .

[0050] The reaction box 104, the distillation box 105 and the salt washing box 106 are all provided with a reaction chamber 1041, the reaction chamber 1041 is provided with a discharge chute 1042, the discharge chute 1042 is sealed and connected to the metering valve 107 via a flange, the reaction box 104, the distillation box 105 and the salt washing box 106 are externally installed with a heater 1043, the external sides of the heater 1043 are both installed with a steam delivery pipe 1044, and the steam delivery pipe 1044 is connected to the installation box 103.

[0051] Specifically, by arranging the reaction box 104, the distillation box 105 and the salt washing box 106 inside the synthesis reactor 1, the floor space of the equipment can be saved, and the time required for moving and transporting materials can be saved, thereby improving the preparation effect. In addition, the modular synthesis reactor 1 is convenient for disassembly and assembly, maintenance and repair, and cleaning, which is conducive to long-term work.

[0052] In order to solve the technical problems in the prior art that centrifugal equipment and drying equipment have high requirements for the workshop and are inconvenient to install, please refer to Figure 1 , Figure 6 , providing the following technical solutions:

[0053] A feed valve 501 is installed between the centrifuge 5 and the delivery pump 7, a rotating drum 502 is installed inside the centrifuge 5, a motor 504 is installed at the lower end of the rotating drum 502, and a material receiving box 503 is surrounded by the outside of the rotating drum 502, and the material receiving box 503 is rotatably connected to the rotating drum 502 through a shaft sleeve, and the rotating drum 502 is connected to the rake dryer 6 through a connecting pipe. The material receiving box 503 is used to collect the liquid phase, and rake teeth 603 and a knocking rod 604 are installed inside the rake dryer 6.

[0054] Specifically, the reaction material in the salt washing box 106 can be moved and transported to the centrifuge 5 through the feed valve 501 and the delivery pump 7, and the liquid phase screened after the drum 502 works can be collected through the collecting box 503, and the solid phase material is introduced into the rake dryer 6 through the connecting pipe under the drum 502, so that the drying work can be carried out quickly without multiple transportations, which reduces the working requirements of the equipment, facilitates long-term work, and is conducive to improving work efficiency.

[0055] See also Figure 1 - Figure 6 A process for producing a bisaminosilane coupling agent comprises the following steps:

[0056] Step 1: Ethylenediamine is pumped from the tank area storage tank into the first metering tank 2, added to the synthesis reactor 1 through the metering pump 4, and the temperature is raised to 50-70°C. The heating is stopped, and chloropropyl alkoxysilane is pumped from the tank area storage tank into the second metering tank 3, added to the synthesis reactor 1 through the metering pump 4, and the addition is completed within 3 hours. The temperature is raised to 100-110°C and kept in the reaction box 104 for 2-3 hours, and then the ethylenediamine is recovered and stored in a cool and ventilated warehouse. When the temperature of the synthesis reactor 1 reaches 140°C, the material is cooled to below 60°C and pumped into the distillation box 105;

[0057] Step 2: The material is allowed to stand in the distillation box 105 for 3-4 hours, and the lower turbid liquid is put into the salt washing box 106 through the metering valve 107, and the supernatant liquid remains in the distillation box 105;

[0058] Step 3: Maintain the vacuum degree of the distillation box 105 at 0.098 kpa by a vacuum pump, heat the distillation box 105 by a steam generator, and start collecting ethylenediamine when the kettle temperature reaches 60°C and store it in a cool and ventilated warehouse until the kettle temperature reaches 120°C to obtain a semi-finished product, continue to heat up the distillation, and collect the finished product by a primary water cooling condensation method until the kettle temperature reaches 160°C, and the collection of the finished product is completed;

[0059] Step 4: After the lower turbid liquid is placed in the salt washing box 106, the salt washing box 106 is maintained at a vacuum of 0.098 kpa by a vacuum pump, and the temperature is raised by 60°C to 120°C. The recovered ethylenediamine is stored in a cool and ventilated warehouse. After the recovery is completed, the temperature is lowered to 30~40°C, and the solvent is added and stirred for 1~2 hours. The wet product of ethylenediamine hydrochloride is obtained by centrifugation through a delivery pump 7 into a centrifuge 5. The centrifuge liquid collected in the collecting box 503 is introduced into an auxiliary workshop for purification treatment. The ethylenediamine hydrochloride is separated by a rotary drum 502 and then transported to a rake dryer 6;

[0060] Step 5: Add ethylenediamine monohydrate to the rake dryer 6 through the feeding pipe 602, stir and dissolve, then add a certain amount of sodium hydroxide, maintain a vacuum of 0.098 kpa, start to recover ethylenediamine monohydrate when the temperature rises to 60°C, and stop when the temperature rises to 110°C. After cooling, collect the sodium chloride solid in the rake dryer 6 through the discharge pipe 601.

[0061] Working principle: Ethylenediamine is pumped from the tank area storage tank into the first metering tank 2, added to the synthesis reactor 1 through the metering pump 4, heated to 50~70℃, and the heating is stopped. Chloropropyl alkoxysilane is pumped from the tank area storage tank into the second metering tank 3, added to the synthesis reactor 1 through the metering pump 4, and the addition is completed within 3 hours. The temperature is raised to 100~110℃ and kept in the reaction box 104 for 2~3h, and then ethylenediamine is recovered. When the temperature of the synthesis reactor 1 reaches 140℃, the material is cooled to below 60℃ and pumped into the distillation box 105. The material is allowed to stand in the distillation box 105 for 3~4h, and the turbid liquid is passed through. The mixture is put into the salt washing box 106 through the metering valve 107, and the supernatant is left in the distillation box 105. In the preparation work, by setting a layered structure inside the synthesis reactor 1, solutions with different mixing degrees can be layered, and different types of reaction solutions can be processed separately, thereby improving the processing effect. The vacuum degree of the distillation box 105 is maintained at 0.098 kPa by a vacuum pump, and the distillation box 105 is heated by a steam generator. When the kettle temperature reaches 60°C, ethylenediamine is collected and stored in a cool and ventilated warehouse until the kettle temperature reaches 120°C to obtain a semi-finished product, and the temperature is continued to be raised for distillation, and the distillation is carried out. The finished product is collected by a first-stage water cooling condensation method until the kettle temperature reaches 160°C. After the finished product is collected, the lower turbid liquid is placed in the salt washing box 106, and the salt washing box 106 is maintained at a vacuum of 0.098kpa by a vacuum pump, and the temperature is raised by 60°C~120°C to recover ethylenediamine. After the recovery is completed, the temperature is lowered to 30~40°C, and the solvent is added and stirred for 1~2h. The wet product of ethylenediamine hydrochloride is obtained by centrifugation through a delivery pump 7 into a centrifuge 5. The centrifuge liquid collected in the collecting box 503 is introduced into an auxiliary workshop for purification treatment. The ethylenediamine hydrochloride is separated by a rotary drum 502 and then transported to a rake dryer 6. Add ethylenediamine monohydrate to the rake dryer 6 through the feeding pipe 602, stir and dissolve, then add a certain amount of sodium hydroxide, maintain the vacuum of 0.098kpa, and the drying work can be carried out quickly without multiple transportations, which reduces the working requirements of the equipment, facilitates long-term work, and is conducive to improving work efficiency. When the temperature rises to 60°C, the ethylenediamine monohydrate is recovered and the recovery is stopped when the temperature rises to 110°C. After cooling, the sodium chloride solid in the rake dryer 6 is collected through the discharge pipe 601, thereby maximizing the use of raw materials, reducing resource loss, and being conducive to improving environmental protection effects.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production device for a bisaminosilane coupling agent, comprising: A synthesis kettle (1), the synthesis kettle (1) being used for mixing raw materials, wherein a reaction box (104), a distillation box (105) and a salt washing box (106) are installed inside the synthesis kettle (1), wherein the salt washing box (106) is located below the distillation box (105), and the distillation box (105) is located below the reaction box (104); It is characterized by also including: An installation box (103), two installation boxes (103) for installing the processing structure are provided, the two installation boxes (103) are respectively located at the front end and the rear end of the synthesis kettle (1), and one side of the installation box (103) extends into the interior of the synthesis kettle (1) and is respectively fitted with one side of the exterior of the reaction box (104), the distillation box (105) and the salt washing box (106); A first metering tank (2) and a second metering tank (3), the first metering tank (2) and the second metering tank (3) for transferring the ethylenediamine raw material and the chloropropyl alkoxysilane raw material, are respectively located on both sides of the synthesis reactor (1), and a feed pipe (201) is provided on one side of the upper end of the first metering tank (2) and the second metering tank (3); A centrifuge (5), the centrifuge (5) for centrifugally settling turbid liquid is located on one side below the synthesis reactor (1), and a delivery pump (7) is installed between the centrifuge (5) and the salt washing box (106); a rake dryer (6), the rake dryer (6) for collecting solid-phase sodium chloride being located on one side of the outside of the centrifuge (5); a connecting pipe being installed between the rake dryer (6) and the centrifuge (5); a feeding pipe (602) being installed at the upper end of the rake dryer (6); and a discharge pipe (601) being provided at the lower end of the rake dryer (6); The discharge ports of the first metering tank (2) and the second metering tank (3) are respectively connected to two metering pumps (4), the liquid guide pipes of the two metering pumps (4) are both connected to the liquid inlet pipe of the synthesis reactor (1), and the liquid inlet pipe of the synthesis reactor (1) extends to the interior of the reaction box (104) and is sealedly connected to the synthesis reactor (1); A manhole (102) is provided at the upper end of the synthesis reactor (1), the installation box (103) is sealed and connected to the synthesis reactor (1) via a sealing layer, a vacuum pump, a steam generator and a primary water-cooled condenser are installed inside the installation box (103), and the vacuum pump is used to control the internal air pressure of the salt washing box (106) and the distillation box (105); A metering valve (107) is installed between the reaction box (104) and the distillation box (105), and between the distillation box (105) and the salt washing box (106); the reaction box (104) and the distillation box (105) are connected via the metering valve (107), and the distillation box (105) and the salt washing box (106) are connected via the metering valve (107); A servo motor (101) is installed at the upper end of the synthesis reactor (1), a connecting shaft (1011) is installed below the servo motor (101), a stirring paddle (1012) is installed outside the connecting shaft (1011), and the connecting shaft (1011) passes through the reaction box (104), the distillation box (105) and the salt washing box (106) and is rotatably connected to the reaction box (104), the distillation box (105) and the salt washing box (106) through a sealing shaft sleeve (1045).

2. The production device of a bisaminosilane coupling agent according to claim 1, characterized in that: The reaction box (104), the distillation box (105) and the salt washing box (106) are each provided with a reaction chamber (1041), the reaction chamber (1041) is provided with a feed chute (1042), the feed chute (1042) and the metering valve (107) are sealed via a flange, and heaters (1043) are installed on the outside of the reaction box (104), the distillation box (105) and the salt washing box (106), and steam delivery pipes (1044) are installed on both sides of the outside of the heater (1043), and the steam delivery pipes (1044) are connected to the installation box (103).

3. The production device of a bisaminosilane coupling agent according to claim 2, characterized in that: A feed valve (501) is installed between the centrifuge (5) and the delivery pump (7), a rotary drum (502) is installed inside the centrifuge (5), a motor (504) is installed at the lower end of the rotary drum (502), and a material receiving box (503) is surrounded by the outside of the rotary drum (502), the material receiving box (503) is rotatably connected to the rotary drum (502) via a shaft sleeve, the rotary drum (502) and the rake dryer (6) are connected via a connecting pipe, the material receiving box (503) is used to collect the liquid phase, and rake teeth (603) and a knocking rod (604) are installed inside the rake dryer (6).

4. A process for producing a bisaminosilane coupling agent according to claim 3, characterized in that: The steps include: Step 1: Ethylene diamine is pumped from a tank storage tank into a first metering tank (2), and then added to a synthesis kettle (1) via a metering pump (4). The temperature is raised to 50-70°C, and heating is stopped. Chloropropyl alkoxysilane is pumped from a tank storage tank into a second metering tank (3), and then added to a synthesis kettle (1) via a metering pump (4). The addition is completed within 3 hours. The temperature is raised to 100-110°C and kept in a reaction box (104) for 2-3 hours. Then, ethylene diamine is recovered and stored in a cool, ventilated warehouse. The temperature of the synthesis kettle (1) is stopped when the kettle temperature reaches 140°C. The material is cooled to below 60°C and pumped into a distillation box (105); Step 2: The material is allowed to stand in the distillation box (105) for 3-4 hours, and the lower turbid liquid is put into the salt washing box (106) through the metering valve (107), and the supernatant liquid remains in the distillation box (105); Step 3: Maintaining the vacuum degree of the distillation box (105) at 0.098 kPa by means of a vacuum pump, raising the temperature of the distillation box (105) by means of a steam generator, and starting to collect ethylenediamine when the kettle temperature reaches 60°C and storing it in a cool, ventilated warehouse until the kettle temperature reaches 120°C, obtaining a semi-finished product, continuing to raise the temperature for distillation, and collecting the finished product by means of a primary water cooling condensation method, until the kettle temperature reaches 160°C, and the collection of the finished product is completed; Step 4: After the lower turbid liquid is placed in the salt washing box (106), the vacuum of the salt washing box (106) is maintained at 0.098 kPa by a vacuum pump, and the temperature is raised to 60°C~120°C. The recovered ethylenediamine is stored in a cool and ventilated warehouse. After the recovery is completed, the temperature is lowered to 30~40°C, and the solvent is added and stirred for 1~2 hours. The liquid is introduced into the centrifuge (5) through the delivery pump (7) for centrifugation to obtain the wet product of ethylenediamine hydrochloride. The centrifuge liquid collected by the collecting box (503) is introduced into the auxiliary workshop for purification treatment. The ethylenediamine hydrochloride is separated by the drum (502) and then transported to the rake dryer (6); Step 5: Add ethylenediamine monohydrate to the rake dryer (6) through the feeding pipe (602), stir to dissolve, then add a certain amount of sodium hydroxide, maintain a vacuum of 0.098 kPa, and start to recover ethylenediamine monohydrate when the temperature rises to 60°C. When the temperature rises to 110°C, the recovery is stopped. After cooling, the sodium chloride solid in the rake dryer (6) is collected through the discharge pipe (601).

Images