Automatic water-containing triethylamine water distribution device for AKD (Alkyl Ketene Dimer) production

Abstract

The utility model relates to a water-containing triethylamine automatic water separation device for AKD (alkyl ketene dimer) production. The water-containing triethylamine automatic water separation device comprises a condenser and an automatic water separation tank, the condenser comprises a shell pass inlet, a shell pass outlet I, a shell pass outlet II, a tube pass inlet and a tube pass outlet, the automatic water separation tank comprises a tank body, a layering pore plate and an overflow partition plate are fixedly installed on the bottom wall of the tank body, and an oil passing gap is reserved between the top end of the overflow partition plate and the top wall of the tank body. The interior of the tank body is divided into a pretreatment area, a water drainage area and an oil drainage area, and the water drainage area is located between the pretreatment area and the oil drainage area; the layering pore plate is arranged in the tank body, so that a liquid phase body uniformly enters the drainage area and is layered in the drainage area, a liquid phase positioned on the upper layer of a liquid surface overflows into the oil drainage area through the overflow partition plate and is discharged out of the tank body through the oil phase discharge pipeline, and a liquid phase positioned on the lower layer is discharged out of the tank body through the water phase discharge pipeline, and tedious manual dehydration operation is not needed in the period; the production process is obviously simplified, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to alkyl ketene dimer processing technical field, specifically for a kind of automatic water separation device of aqueous triethylamine for AKD production. BACKGROUND

[0002] Alkyl ketene dimer (AKD) is an unsaturated lactone, which can be used in papermaking / alkaline sizing agent, mainly used as copper plate base paper, copying paper, archive paper, dictionary paper and high-quality writing paper and other paper species internal sizing. The sizing pH value can reach about 8.0, which is widely used at home and abroad;

[0003] AKD synthesis mainly has two processes: one is solvent process, and the main raw materials are triethylamine, fatty acid chloride and toluene, wherein toluene is a solvent. In the synthesis reaction, due to the presence of solvent toluene, the material flowability is good, and the viscosity is low. Generally, kettle type stirring mixing reaction mode is adopted.

[0004] The other is solvent-free process, and the main raw materials are triethylamine and fatty acid chloride. In the solvent-free process for synthesizing papermaking additives AKD, the material viscosity is large in the later stage of reaction, and the material contains fine triethylamine hydrochloride solid particles. When the temperature T is 65 DEG C, the material viscosity can reach 130000 mPa.s. After the reaction is completed, the triethylamine hydrochloride solid particles in the AKD product need to be dissolved in the solution, so as to realize the stratification of AKD in the triethylamine hydrochloride aqueous solution. The lower layer triethylamine is separated from water after reaction with alkali to obtain triethylamine crude product containing 3%~4% water. However, the water content in the triethylamine crude product does not meet the production requirement of 0.3%, and long-time standing stratification or additional dehydration device and dehydrating agent are needed, which is complex in operation and high in cost.

[0005] Therefore, in order to meet the dehydration requirement in production process, an automatic water separation device is proposed. UTILITY MODEL CONTENT

[0006] The utility model solves the technical problem in the prior art, and provides an automatic water separation device for AKD production, which can dehydrate triethylamine material without dehydrating agent or additional dehydration device.

[0007] The technical problem solved by the utility model is solved by the following technical scheme. An automatic water separation device for AKD production includes a condenser and an automatic water separation tank.

[0008] The condenser comprises a shell inlet, a shell outlet I, a shell outlet II, a tube inlet and a tube outlet, the shell inlet is connected with a triethylamine water vapor supply pipe for supplying triethylamine water vapor, the shell outlet I is located at the bottom of the condenser and is connected with a triethylamine water vapor condensate outlet pipe, and the shell outlet II is located at the top of the condenser.

[0009] The automatic water separation tank comprises a tank body, a layered hole plate and an overflow partition plate are fixedly installed on the bottom wall of the tank body, an oil overflow gap is reserved between the top end of the overflow partition plate and the top wall of the tank body, so that the tank body is divided into a pretreatment zone, a water drainage zone and an oil drainage zone, and the water drainage zone is located between the pretreatment zone and the oil drainage zone.

[0010] The outlet end of the triethylamine water vapor condensate outlet pipe is connected to the pretreatment zone of the tank body, a plurality of through holes are formed in the layered hole plate, a water phase discharge pipeline extending out of the tank body is connected to the bottom of the water drainage zone of the tank body, and an oil phase discharge pipeline extending out of the tank body is connected to the bottom of the oil drainage zone of the tank body.

[0011] A layered observation mirror I, a layered observation mirror II and a layered observation mirror III are sequentially arranged on the side wall of the water drainage zone of the tank body, and the height of the layered observation mirror III is flush with the top end of the overflow partition plate.

[0012] The technical problems solved by the utility model can also be solved by the following technical solutions, the automatic water separation device for the triethylamine containing water in the AKD production, the bottom wall of the condenser is inclinedly arranged towards the shell outlet II.

[0013] The technical problems solved by the utility model can also be solved by the following technical solutions, the automatic water separation device for the triethylamine containing water in the AKD production, the temperature measuring unit for detecting temperature is installed on the side wall of the pretreatment zone of the tank body.

[0014] The technical problems solved by the utility model can also be solved by the following technical solutions, the automatic water separation device for the triethylamine containing water in the AKD production, the liquid level detection unit is installed on the side wall of the oil drainage zone of the tank body.

[0015] The technical problems solved by the utility model can also be solved by the following technical solutions, the automatic water separation device for the triethylamine containing water in the AKD production, the pressure testing unit is installed on the top wall of the tank body.

[0016] Compared with the prior art, the utility model has the beneficial technical effects that:

[0017] (1) The automatic water separation device of the aqueous triethylamine replaces the original complex dehydration system, and the triethylamine aqueous vapor condensate formed after the triethylamine aqueous vapor is condensed enters the automatic water separation tank. Because the tank body is provided with a layered orifice plate, the liquid phase can uniformly enter the drainage area and be layered in the drainage area. The liquid phase in the upper layer overflows through the overflow partition to the oil discharge area and is discharged from the tank body through the oil phase discharge pipeline. The liquid phase in the lower layer is discharged from the tank body through the water phase discharge pipeline. During this period, there is no need for complicated manual dehydration operation, which significantly simplifies the production process and improves the production efficiency.

[0018] (2) The temperature measuring unit arranged in the tank body can detect the temperature in the tank body, and the worker can know the temperature of the fluid in the tank body.

[0019] (3) The liquid level detection unit arranged in the tank body can detect the liquid level in the tank body, and the worker can know the real-time liquid level of the fluid in the tank body. The layered observation mirror I, the layered observation mirror II and the layered observation mirror III arranged on the side wall of the drainage area of the tank body can observe the layering of the liquid phase in the tank body.

[0020] (4) The pressure testing unit arranged in the tank body can detect the pressure value in the tank body, and the worker can know the pressure value in the tank body. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a pipeline connection schematic diagram of the utility model.

[0022] Mark: 1, condenser; 2, automatic water separation tank; 3, layered orifice plate; 4, overflow partition; 5, pre-treatment area; 6, drainage area; 7, oil discharge area; 8, triethylamine aqueous vapor condensate outlet pipe; 9, water phase discharge pipeline; 10, oil phase discharge pipeline; 11, layered observation mirror I; 12, layered observation mirror II; 13, layered observation mirror III; 14, temperature measuring unit; 15, liquid level detection unit; 16, pressure testing unit; 17, shell inlet; 18, shell outlet I; 19, shell outlet II; 20, tube inlet; 21, tube outlet; 22, triethylamine aqueous vapor supply pipe; 23, water inlet pipe; 24, water outlet pipe. DETAILED DESCRIPTION

[0023] The specific technical scheme of the utility model is further described below with reference to the drawings, so that those skilled in the art can further understand the utility model, but it does not limit the rights thereof.

[0024] Example 1, refer to Figure 1 An automatic water separation device of aqueous triethylamine for AKD production comprises a condenser 1 and an automatic water separation tank 2.

[0025] The condenser 1 comprises a shell inlet 17, a shell outlet I 18, a shell outlet II 19, a tube inlet 20 and a tube outlet 21, the shell inlet 17 is connected with a triethylamine aqueous vapor supply pipe 22 for supplying triethylamine aqueous vapor, the shell outlet I 18 is located at the bottom of the condenser 1 and is connected with a triethylamine aqueous vapor condensate outlet pipe 8, the shell outlet II 19 is located at the top of the condenser 1 and is used for discharging uncondensed vapor, the tube inlet 20 and the tube outlet 21 are connected with a water inlet pipe 23 and a water outlet pipe 24, and the bottom wall of the condenser 1 is obliquely arranged towards the shell outlet II 19, and the inclination angle is less than 6°, which can be selected according to the use requirement;

[0026] The automatic water distribution tank 2 comprises a tank body, a layered hole plate 3 and an overflow partition plate 4 are fixedly installed on the bottom wall of the tank body, the layered hole plate 3 and the overflow partition plate 4 are vertically installed on the inner wall of the tank body, an oil overflow gap is reserved between the top end of the overflow partition plate 4 and the top wall of the tank body, the size of the oil overflow gap can be selected according to the use requirement, so that the tank body is divided into a pretreatment area 5, a water drainage area 6 and an oil drainage area 7, and the water drainage area 6 is located between the pretreatment area 5 and the oil drainage area 7;

[0027] The outlet end of the triethylamine aqueous vapor condensate outlet pipe 8 is connected to the pretreatment area 5 of the tank body, a plurality of through holes are formed in the layered hole plate 3, the number of the through holes can be selected according to the use requirement, the diameter of the through holes is less than 0.6 mm, the diameter of the through holes can be selected according to the use requirement, and therefore the diameter of the through holes is not enumerated here, a water phase discharge pipe 9 extending out of the tank body is connected to the bottom of the water drainage area 6 of the tank body, and an oil phase discharge pipe 10 extending out of the tank body is connected to the bottom of the oil drainage area 7 of the tank body;

[0028] A layered observation mirror I 11, a layered observation mirror II 12 and a layered observation mirror III 13 are sequentially arranged on the side wall of the water drainage area 6 of the tank body, the height of the layered observation mirror III 13 is flush with the top end of the overflow partition plate 4, and the spacing and size of the adjacent observation mirrors can be selected;

[0029] A temperature measuring unit 14 for detecting temperature is installed on the side wall of the pretreatment area 5 of the tank body, and the temperature measuring unit 14 can be a thermometer, and the type and size of the thermometer are not limited;

[0030] A liquid level detection unit 15 is installed on the side wall of the oil drainage area 7 of the tank body, and the liquid level detection unit 15 can be a liquid level meter, and the type and size of the liquid level meter are not limited;

[0031] A pressure testing unit 16 is installed on the top wall of the tank body, and the pressure testing unit 16 can be a pressure gauge, and the type and size of the pressure gauge are not limited.

[0032] The automatic water separation device of triethylamine containing water replaces the original complex dehydration system, and the triethylamine containing water vapor condensate formed after the triethylamine containing water vapor is condensed enters the automatic water separation tank 2. Because the layered orifice plate 3 is arranged in the tank body, the liquid phase can uniformly enter the drainage area 6 and be stratified in the drainage area 6. The liquid phase in the upper layer of the liquid surface overflows to the oil discharge area 7 through the overflow partition plate 4 and is discharged from the tank body through the oil phase discharge pipeline 10. The liquid phase in the lower layer is discharged from the tank body through the water phase discharge pipeline 9. During the period, complicated manual dehydration operation is not required, the production process is significantly simplified, and the production efficiency is improved.

Claims

1. An aqueous triethylamine automatic water splitting device for AKD production, characterized in that: It includes a condenser and an automatic water distribution tank. The condenser includes a shell inlet, a shell outlet I, a shell outlet II, a tube inlet and a tube outlet, the shell inlet is connected with a triethylamine water vapor supply pipe for supplying triethylamine water vapor, the shell outlet I is located at the bottom of the condenser and is connected with a triethylamine water vapor condensate outlet pipe, the shell outlet II is located at the top of the condenser, and the tube inlet and the tube outlet are connected with a water inlet pipe and a water outlet pipe. The automatic water distribution tank includes a tank body, a layered hole plate and an overflow partition plate are fixedly installed on the bottom wall of the tank body, an oil overflow gap is reserved between the top end of the overflow partition plate and the top wall of the tank body, so as to divide the tank body into a pretreatment area, a water drainage area and an oil drainage area, and the water drainage area is located between the pretreatment area and the oil drainage area. The outlet end of the triethylamine water vapor condensate outlet pipe is connected to the pretreatment area of the tank body, a plurality of through holes are formed in the layered hole plate, a water phase discharge pipeline extending out of the tank body is connected to the bottom of the water drainage area of the tank body, and an oil phase discharge pipeline extending out of the tank body is connected to the bottom of the oil drainage area of the tank body. A layered observation mirror I, a layered observation mirror II and a layered observation mirror III are sequentially arranged on the side wall of the water drainage area of the tank body, and the height of the layered observation mirror III is flush with the top end of the overflow partition plate.

2. The automatic water-containing triethylamine device for AKD production according to claim 1, characterized in that: The bottom wall of the condenser is inclined towards the shell outlet II.

3. The automatic water-containing triethylamine device for AKD production according to claim 1, characterized in that: A temperature measuring unit for detecting temperature is installed on the side wall of the pretreatment area of the tank body.

4. The automatic water-containing triethylamine device for AKD production according to claim 1, characterized in that: A liquid level detection unit is installed on the side wall of the oil drainage area of the tank body.

5. The automatic water-containing triethylamine device for AKD production according to claim 1, characterized in that: A pressure testing unit is installed on the top wall of the tank body.

Images