Octanol recovery apparatus for use in plasticizer production processes

Abstract

The utility model discloses a kind of octanol recovery equipment for plasticizer production process, belong to plasticizer production equipment production technical field, including reaction kettle main body, reaction kettle main body top is connected with heat conversion assembly, heat conversion assembly bottom is provided with fixing frame, by the spiral adhesion design of condenser heat exchange section and raw material conveying pipe, it is matched with the spiral winding structure of the extension pipeline of both sides of shell outer side, maximizes the heat exchange contact area, let the waste heat of octanol steam can be quickly, fully transferred to the raw material to be entered into reaction kettle, break the drawback that condensation and preheating system are independent in traditional equipment, both reduce the consumption of cooling medium required for condensation, and also save the additional fuel or electric energy input of raw material heating, significantly reduce overall operation energy consumption, fit the development trend of green chemical industry.

Description

Technical Field

[0001] This utility model relates to the technical field of plasticizer production equipment, and more specifically, it relates to an octanol recovery device used in the plasticizer production process. Background Technology

[0002] Octyl alcohol recovery equipment is a specialized industrial device used to separate and recover octanol from waste liquids, waste gases, or reaction mixtures in industrial production. It is widely used in various industries such as chemical, pharmaceutical, coating, and plastics to achieve the recycling of octanol resources, reduce production costs, and reduce the pollution of the environment caused by octanol-containing waste emissions.

[0003] Octyl alcohol is a core raw material in the production process of plasticizers (such as DOP, DOTP, DOA, etc.). After the reaction, it will be discharged in the form of vapor with the tail gas or remain in the waste residue and wastewater. If it cannot be efficiently recovered, it will not only cause waste of raw materials and increase production costs, but may also pollute the environment due to the volatilization of octanol. Therefore, octanol recovery is a key link in the production of plasticizers. In existing equipment, the condensation system for octanol vapor is independent of the preheating system for the raw materials to be processed. During condensation, a large amount of cooling medium needs to be introduced to remove the heat from the vapor. However, the raw materials need to be heated by additional fuel or electricity before entering the reactor. The heat carried by the vapor is not effectively utilized, resulting in an increase in overall energy consumption, which is not in line with the development trend of green chemical industry. Utility Model Content

[0004] To achieve the above objectives, the present invention provides the following technical solution: An octanol recovery device for use in the plasticizer production process includes a reaction vessel body, a heat conversion component connected to the top of the reaction vessel body, and a fixing frame provided at the bottom of the heat conversion component; The heat conversion assembly includes a shell. An inlet for introducing octanol vapor is provided at one end of the shell near the main body of the reactor. A condenser tube is spirally arranged on the inner wall of the shell. The end of the condenser tube near the inlet is a heat exchange section for absorbing steam heat. A raw material conveying pipe is spirally attached to the inner side of the heat exchange section. Several heat-conducting plates are arranged between the raw material conveying pipe and the condenser tube heat exchange section. The portion of the condenser tube heat exchange section and the raw material conveying pipe extending to the outside of the shell are spirally attached and wound with the extended pipe of the condenser tube heat exchange section.

[0005] Furthermore, a heating sleeve is provided at the connection between the raw material conveying pipe and the main body of the reactor, and the extension of the raw material conveying pipe on the outside of the shell is covered with an insulation layer to prevent heat loss.

[0006] Furthermore, a water inlet is provided on the side of the shell away from the reactor body, and a cooling medium is continuously introduced into the condenser tube through the water inlet. A discharge pipe is provided at the bottom of the shell on the same side as the water inlet, so that the liquid octanol raw material recovered by condensation is discharged from the discharge pipe.

[0007] Furthermore, the shell is arranged at an angle, and the angle of the shell is such that the end near the main body of the reactor is higher than the end near the discharge pipe, so that the condensed liquid octanol flows to the discharge pipe by its own weight.

[0008] Furthermore, an exhaust pipe is provided on one side of the top of the reactor body, and the exhaust pipe is sealed to the air inlet through a flange assembly. A feed inlet is provided in the middle of the reactor body, and the feed inlet is connected to the flange of the raw material conveying pipe.

[0009] Furthermore, the fixing frame includes several support rods, the top of each support rod is provided with a bracket for supporting the fixing housing, and several connecting rods are provided in the middle of the several support rods, the connecting rods being used to connect and fix each support rod.

[0010] Furthermore, a temperature sensor and controller for detecting the preheating temperature of the raw materials are installed inside the heating sleeve.

[0011] In summary, this utility model has the following beneficial effects: By using a spiral fit design between the condenser heat exchange section and the raw material conveying pipe, coupled with evenly distributed heat-conducting fins, and a spiral winding structure of the extension pipes on the outer side of the shell, the heat exchange contact area is maximized. This allows the residual heat of the octanol vapor to be quickly and fully transferred to the raw material to be introduced into the reactor. This breaks the drawback of the independent condensation and preheating systems in traditional equipment, reducing the consumption of cooling media required for condensation and eliminating the need for additional fuel or electricity for heating the raw material. This significantly reduces the overall operating energy consumption and aligns with the development trend of green chemical industry. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the main body of the reaction vessel in this utility model; Figure 3This is a schematic diagram of the heat conversion component in this utility model; Figure 4 This is a schematic diagram of the structure of the condenser tube and the raw material conveying tube inside the shell in this utility model; Figure 5 This is a schematic diagram of the structure of the outer condenser tube and the raw material conveying tube in this utility model; Figure 6 This is a schematic diagram showing the position of the heat-conducting sheet inside the shell in this utility model; Figure 7 This is a schematic diagram of the structure of the fixing frame in this utility model.

[0014] In the picture: 1. Reactor body; 101. Exhaust pipe; 102. Feed inlet; 2. Heat conversion assembly; 201. Shell; 202. Air inlet; 203. Condenser; 204. Raw material conveying pipe; 205. Heat-conducting plate; 206. Water inlet; 207. Discharge pipe; 208. Heating sleeve; 209. Insulation layer; 3. Fixing frame; 301. Support rod; 302. Bracket; 303. Connecting rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0016] Example: The following is in conjunction with the appendix Figure 1-7 The present invention will be described in further detail below.

[0017] Please see Figure 1-7 This utility model provides a technical solution: an octanol recovery device for the plasticizer production process, such as... Figure 1-7 As shown, it includes: a reactor body 1, a heat conversion component 2 connected to the top of the reactor body 1, and a fixing frame 3 provided at the bottom of the heat conversion component 2; like Figure 2 As shown, an exhaust pipe 101 is provided on one side of the top of the reactor body 1. The exhaust pipe 101 is sealed to the air inlet 202 of the heat conversion component 2 by a flat welding flange. The flange is made of stainless steel and the gasket is made of polytetrafluoroethylene to ensure the sealing performance under high temperature and high pressure. In addition, a feed inlet 102 is provided in the middle of the reactor body 1, and the feed inlet 102 is connected to the flange of the raw material conveying pipe 204.

[0018] like Figure 3-6As shown, the heat conversion component 2 includes a shell 201. An inlet 202 for introducing octanol vapor is provided at one end of the shell 201 near the reactor body 1. A condenser tube 203 is spirally arranged on the inner wall of the shell 201. The end of the condenser tube 203 near the inlet 202 is a heat exchange section for absorbing steam heat. A raw material conveying pipe 204 is spirally attached to the inner side of the heat exchange section. The raw material conveying pipe 204 is made of stainless steel and is fixed to the heat exchange section of the condenser tube 203 by argon arc welding to ensure a firm connection without affecting heat conduction. Several heat-conducting plates 205 are provided between the heat exchange section of the raw material conveying pipe 204 and the condenser pipe 203. The heat-conducting plates 205 are attached to the heat exchange section of the condenser pipe 203 and are evenly distributed between the condenser pipe 203 and the raw material conveying pipe 204. They are fixed by brazing to further enhance heat transfer. The part of the heat exchange section of the condenser pipe 203 and the part of the raw material conveying pipe 204 extending to the outside of the shell 201 are spirally attached and wrapped with the extension pipe of the heat exchange section of the condenser pipe 203. A heating sleeve 208 is installed on the raw material conveying pipe 204. The heating sleeve 208 is fitted onto the front section of the raw material conveying pipe 204 that connects to the reactor body 1. A temperature sensor and controller for detecting the preheating temperature of the raw material are installed inside the heating sleeve 208. The temperature sensor and controller can monitor the preheating temperature of the raw material in real time and feed it back to the control system via an electrical signal. When the temperature is lower than the set value, the heating sleeve 208 is automatically adjusted to supplement the heating temperature, ensuring a stable preheating effect. In addition, the extension portion of the raw material conveying pipe 204 on the outside of the shell 201 is fitted with a rock wool insulation layer 209 to prevent heat loss. The insulation layer 209 is wrapped with aluminum foil cloth for moisture protection. A water inlet 206 is provided on the side of the shell 201 away from the reactor body 1. The water inlet 206 continuously supplies cooling medium to the condenser tube 203. A discharge pipe 207 is provided at the bottom of the shell 201 on the same side as the water inlet 206, so that the liquid octanol raw material recovered by condensation is discharged from the discharge pipe 207. The shell 201 is arranged in an inclined shape, and the inclined direction of the shell 201 is that the end closer to the reactor body 1 is higher than the end closer to the discharge pipe 207, so that the condensed liquid octanol flows to the discharge pipe 207 by its own weight. like Figure 7 As shown, the fixing frame 3 includes several support rods 301. The top of the support rods 301 is provided with a bracket 302 for supporting the fixing housing 201. Several connecting rods 303 are provided in the middle of the several support rods 301. The connecting rods 303 are used to connect and fix each support rod 301.

[0019] Working principle: The raw materials for plasticizer production enter the heat conversion component 2 through the raw material conveying pipe 204. At this time, the temperature sensor and controller are activated to detect the temperature of the raw materials. The plasticizer synthesis reaction takes place in the main body of the reactor 1. The generated octanol vapor enters the interior of the shell 201 through the exhaust pipe 101 and the air inlet 202. The vapor comes into contact with the heat exchange section of the condenser pipe 203. Industrial cooling water flows into the condenser tube 203. The heat of the steam is absorbed by the condenser tube 203, and after cooling down, it condenses into liquid octanol. At the same time, the heat absorbed by the condenser tube 203 is transferred to the raw material in the raw material conveying pipe 204 through the heat conduction plate 205, so that the temperature of the raw material gradually increases. In the section of the raw material conveying pipe 204 near the feed inlet 102 of the reactor body 1, a heating sleeve 208 is installed, and a temperature sensor and controller are provided. When the temperature sensor detects that the preheating temperature of the raw material is lower than the set standard, the controller automatically starts the auxiliary heating device to supplement the heat. The condensed liquid octanol is guided by the tilt angle of the shell 201 and flows at a constant speed along the inner wall of the shell 201 to the discharge pipe 207. After the valve is opened, it is discharged into the storage device to complete the recovery. The preheated raw material enters the main body of the reactor 1 through the feed port 102 via the raw material conveying pipe 204.

[0020] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention.

[0021] In this specification, the illustrative expressions of the terms used above do not necessarily refer to the same embodiments or examples.

[0022] Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An octanol recovery device for use in the plasticizer production process, characterized in that, include: The reactor body (1) is connected to a heat conversion component (2) at the top and a fixing frame (3) is provided at the bottom of the heat conversion component. The heat conversion component (2) includes a shell (201). An air inlet (202) for introducing octanol vapor is provided at one end of the shell (201) near the reactor body (1). A condenser tube (203) is spirally arranged on the inner wall of the shell (201). The end of the condenser tube (203) near the air inlet (202) is a heat exchange section for absorbing steam heat. A raw material conveying pipe (204) is spirally attached to the inner side of the heat exchange section. A number of heat-conducting plates (205) are provided between the raw material conveying pipe (204) and the heat exchange section of the condenser tube (203). The part of the heat exchange section of the condenser tube (203) and the part of the raw material conveying pipe (204) extending to the outside of the shell (201) are spirally attached and wound with the extension pipe of the heat exchange section of the condenser tube (203).

2. The octanol recovery equipment for plasticizer production process according to claim 1, characterized in that, The raw material conveying pipe (204) is provided with a heating sleeve (208) at the connection between the raw material conveying pipe (204) and the reactor body (1), and the raw material conveying pipe (204) is provided with a heat insulation layer (209) on the outer side of the shell (201) to prevent heat loss.

3. The octanol recovery equipment for plasticizer production process according to claim 2, characterized in that, A water inlet (206) is provided on the side of the shell (201) away from the main body (1) of the reactor. The water inlet (206) continuously supplies cooling medium to the condenser (203). A discharge pipe (207) is provided at the bottom of the shell (201) on the same side as the water inlet (206), so that the liquid octanol raw material recovered by condensation is discharged from the discharge pipe (207).

4. The octanol recovery equipment for plasticizer production process according to claim 3, characterized in that, The shell (201) is arranged at an angle, and the angle of the shell (201) is such that the end near the reactor body (1) is higher than the end near the discharge pipe (207), so that the condensed liquid octanol flows to the discharge pipe (207) by its own weight.

5. An octanol recovery device for plasticizer production process according to claim 1, characterized in that, The reactor body (1) is provided with an exhaust pipe (101) on one side of the top. The exhaust pipe (101) is sealed to the air inlet (202) by a flange assembly. The reactor body (1) is provided with a feed inlet (102) in the middle. The feed inlet (102) is connected to the raw material conveying pipe (204) by a flange.

6. An octanol recovery device for plasticizer production process according to claim 1, characterized in that, The fixing frame (3) includes several support rods (301), and the top of the support rods (301) is provided with a bracket (302) for supporting the fixing shell (201). Several connecting rods (303) are provided in the middle of the several support rods (301), and the connecting rods (303) are used to connect and fix each support rod (301).

7. An octanol recovery device for plasticizer production process according to claim 2, characterized in that, The heating sleeve (208) is equipped with a temperature sensor and controller for detecting the preheating temperature of the raw materials.

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