Continuous production equipment

Abstract

The utility model relates to the technical field of chemical equipment, in particular to continuous production equipment, which comprises first-stage tar kettle residue drying and cracking equipment, second-stage tar kettle residue drying and cracking equipment, third-stage tar kettle residue drying and cracking equipment, third-stage tar kettle residue drying and cracking equipment, fourth-stage tar kettle residue drying and cracking equipment and fourth-stage tar kettle residue drying and cracking equipment, an arc-shaped scraper is fixed on the outer wall of the stirring shaft; the conveying barrel and the first outer barrel are integrally communicated, the other end of the conveying barrel is perpendicularly communicated with the discharging barrel, the sight glass is arranged at the top of the discharging barrel, the conveying rod is installed in the shaft seat in a shaft seal mode, and the sealing performance of the device is guaranteed. The arc-shaped scrapers spirally arranged on the stirring shaft of the equipment form plug flow, backmixing and wall sticking of materials are avoided, stirring is more uniform, the heat transfer efficiency is remarkably improved, discharging is smoother through the matched design of the conical necking opening of the conveying barrel and the vertical discharging barrel, the solid discharging rate can be increased, the liquid residual rate can be reduced, meanwhile, material conveying is more convenient, and the service life of the equipment is prolonged. The blockage cannot easily occur.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to a continuous production equipment. Background Technology

[0002] In chemical production processes, coal tar residue is an unavoidable waste or byproduct generated in many chemical processes. Taking coal chemical and petrochemical industries as examples, in coal tar processing, crude oil refining, and various organic synthesis reactions, after a series of complex physical and chemical changes, a portion of high-viscosity, high-boiling-point, and extremely complex substances, namely coal tar residue, will remain.

[0003] The composition of tar residue is complex and diverse, typically containing a large amount of heavy hydrocarbons, asphaltenes, gums, phenols, naphthalenes, pyridines, and other organic compounds, as well as small amounts of metallic impurities and inorganic salts. This complex composition makes the treatment of tar residue extremely difficult, and traditional treatment methods have many drawbacks.

[0004] Several issues related to residual organic solvents in the residue / waste salt of evaporation and concentration tar in the chemical industry:

[0005] 1. The equipment has a simple stirring structure and the traditional scraper arrangement is unreasonable, which leads to material accumulation or back mixing, affecting the uniformity of the reaction and making it easy to stick to the wall, thus affecting the heat transfer efficiency.

[0006] 2. The equipment has difficulty discharging solid materials. The discharge port design of traditional equipment is unreasonable, which makes it easy for solids to clog and for liquid residue to remain. Summary of the Invention

[0007] The main purpose of this utility model is to overcome the shortcomings of the existing technology and provide a continuous production equipment.

[0008] The technical solution adopted by this utility model to achieve its technical objective is: a continuous production equipment, comprising:

[0009] A primary tar residue drying and pyrolysis equipment includes a motor reducer, a coupling, a conveying rod, a stirring shaft, and an arc-shaped scraper. The motor reducer drives the conveying rod and the stirring shaft to rotate through the coupling, and an arc-shaped scraper is fixed on the outer wall of the stirring shaft.

[0010] The conveying cylinder is integrally connected to the first outer cylinder, and the other end is vertically connected to the discharge cylinder. A sight glass is provided at the top of the discharge cylinder.

[0011] The conveying rod is installed inside the shaft seat by means of a shaft seal to ensure the equipment's airtightness.

[0012] Preferably, the arc-shaped scrapers are arranged in a spiral pattern to form a push-flow structure. The spiral arrangement of the arc-shaped scrapers causes the material to move in a push-flow piston-like motion. This structure effectively prevents back-mixing of materials, ensures consistent residence time of materials within the equipment, and improves reaction uniformity. Compared to traditional randomly arranged scrapers, this design can improve heat transfer efficiency by more than 90%.

[0013] Preferably, one end of the conveying cylinder has a conical structure, which is used to push out solid materials while keeping the liquid inside the first outer cylinder. The discharge end of the conveying cylinder adopts a tapered conical structure. This design can achieve effective solid-liquid separation. The extrusion force generated by the conical structure can force out the solid materials while keeping the liquid inside the cylinder to continue reacting, thus solving the problem of incomplete solid-liquid separation in traditional equipment.

[0014] Preferably, the sight glass of the discharge cylinder is made of borosilicate glass or sapphire glass. Using transparent, high-temperature resistant materials like borosilicate glass or sapphire glass enables real-time visual monitoring. Compared to ordinary sight glasses, it has a longer service life and its observation accuracy is not affected by high-temperature deformation.

[0015] Preferably, it also includes a secondary tar residue drying and pyrolysis device, which is connected to the discharge cylinder of the primary tar residue drying and pyrolysis device.

[0016] The primary tar residue drying and pyrolysis equipment is configured as a horizontal single-shaft rake-type scraper evaporator, and the secondary tar residue drying and pyrolysis equipment is configured as a horizontal twin-shaft self-cleaning dryer. The primary single-shaft equipment is responsible for the initial pyrolysis, while the secondary twin-shaft equipment processes high-viscosity materials. The twin-shaft design is particularly suitable for the later processing stages where the material viscosity increases, solving the problem that traditional single-stage equipment cannot handle.

[0017] Preferably, the electromagnetic induction heater is fixedly installed on the outer wall of the first outer cylinder and the second outer cylinder, and the electromagnetic induction heater includes a temperature control probe and a cooling fan;

[0018] The temperature control probe is fixedly installed on the outer wall of the first and second outer cylinders. The temperature control probe monitors the cylinder temperature in real time. The cooling fan is fixedly installed inside the electromagnetic induction heater. The cooling fan automatically adjusts the temperature of the electromagnetic induction heater itself to avoid overheating.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This continuous production equipment uses spirally arranged arc-shaped scrapers on the stirring shaft to create a flat flow, avoiding backmixing and material sticking to the wall, resulting in more uniform mixing and significantly improved heat transfer efficiency.

[0021] This continuous production equipment ensures smoother material discharge. The combined design of the conical constriction of the conveyor cylinder and the vertical discharge cylinder improves the solid discharge rate, reduces the liquid residue rate, and facilitates material transport without clogging.

[0022] This continuous production equipment features more reliable sealing, employing methods such as magnetic or mechanical seals to reduce leakage between the conveyor rod and the shaft seat, thus extending the equipment's lifespan.

[0023] This continuous production equipment directly connects the first-stage single-shaft evaporator with the second-stage twin-shaft dryer, reducing intermediate conveying links, lowering energy consumption, and enabling continuous production.

[0024] This continuous production equipment features a sight glass design that facilitates real-time observation of material conditions, reduces manual intervention, and enables visual monitoring. Attached Figure Description

[0025] Figure 1 A flowchart of the production process for continuous production equipment.

[0026] Figure 2 This is a schematic diagram of the main view / section view of the primary tar residue drying and pyrolysis equipment and the secondary tar residue drying and pyrolysis equipment.

[0027] in:

[0028] 1- Primary tar residue drying and pyrolysis equipment; 101- Motor reducer; 102- Coupling; 103- Shaft seat; 104- Shaft seal; 105- Sight glass; 106- Conveying cylinder; 107- Conveying rod; 108- First outer cylinder; 109- Stirring shaft; 110- Arc scraper; 111- First gas phase outlet; 112- Discharge cylinder; 2- Secondary tar residue drying and pyrolysis equipment; 201- Second outer cylinder; 202- Second gas phase outlet; 3- Electromagnetic induction heater; 301- Cooling fan; 302- Temperature control probe; 4- Screw conveyor; 5- Vertical conical ribbon dryer; 6- Condenser; 601- Condensate storage tank; 7- Recovered solvent storage tank; 8- Vacuum pump. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0030] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0031] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0033] Please see Figures 1-2 A continuous production equipment includes a primary tar residue drying and pyrolysis unit 1, a secondary tar residue drying and pyrolysis unit 2, an electromagnetic induction heater 3, a screw conveyor 4, a vertical conical ribbon dryer 5, a condenser 6, a solvent recovery storage tank 7, and a vacuum pump 8.

[0034] The primary tar residue drying and pyrolysis equipment 1 includes a motor reducer 101, a coupling 102, a shaft seat 103, a shaft seal 104, a sight glass 105, a conveying cylinder 106, a conveying rod 107, a first outer cylinder 108, a stirring shaft 109, an arc-shaped scraper 110, a first gas phase outlet 111, and a discharge cylinder 112.

[0035] The primary tar residue drying and pyrolysis equipment 1 is configured as a horizontal single-shaft rake-type scraper evaporator. A motor-reducer integrated unit 101 drives the conveying rod 107, the stirring shaft 109, and the arc-shaped scraper 110 fixed to the outer wall of the stirring shaft 109 to rotate via a coupling 102. The arc-shaped scraper 110 is arranged in a spiral shape, forming a push-flow structure, which simultaneously stirs and pushes the material, improving heat transfer efficiency. The conveying rod 107 rotates inside the conveying cylinder 106, while the stirring shaft 109 and the arc-shaped scraper 110 on its outer wall rotate within the first outer cylinder 108.

[0036] The conveying cylinder 106 and the first outer cylinder 108 are integrally connected. One end of the conveying cylinder 106 is tapered to facilitate material discharge. The other end of the conveying cylinder 106 is integrally connected with a discharge cylinder 112 in the vertical direction. A sight glass 105 is fixedly installed on the top of the discharge cylinder 112. The material conveying situation inside the discharge cylinder 112 and the conveying cylinder 106 can be observed through the sight glass 105.

[0037] One end of the conveying rod 107 is positioned and installed via the bearing seat 103. The conveying rod 107 is installed inside the bearing seat 103 by means of a shaft seal 104. The shaft seal 104 can be selected as a magnetic seal, mechanical seal, or other types depending on the working conditions. At the same time, the bearing seat 103 can also separate it from the conveying cylinder 106 to prevent the conveying cylinder 106 from entering the interior of the bearing seat 103 when conveying materials.

[0038] After the material is pushed into the first-stage tar residue drying and pyrolysis equipment 1, under the internal operating pressure of -0.1MPa to 10MPa, the electromagnetic induction heater 3, which is fixedly installed on the outer wall of the first outer cylinder 108, concentrates, dries, reacts and pyrolyzes the material through the ultra-high temperature generated by the electromagnetic induction heater 3. The material is stirred and pushed by the stirring shaft 109 and the arc-shaped scraper 110, so that the material is heated evenly and the reaction is more complete. Then, the processed material is conveyed to the discharge cylinder 112 by the rotation of the conveying rod 107.

[0039] The secondary tar residue drying and pyrolysis equipment 2 includes a second outer cylinder 201 and a second gas phase outlet 202. The secondary tar residue drying and pyrolysis equipment 2 is configured as a horizontal twin-shaft self-cleaning dryer. The discharge cylinder 112 of the primary tar residue drying and pyrolysis equipment 1 is fixedly connected to the feed inlet of the secondary tar residue drying and pyrolysis equipment 2. The material processed by the primary tar residue drying and pyrolysis equipment 1 enters the secondary tar residue drying and pyrolysis equipment 2. Under the condition of negative pressure / slight negative pressure in the internal operation, in conjunction with the electromagnetic induction heater 3 fixedly installed on the outer wall of the second outer cylinder 201, the material is concentrated, dried, reacted and pyrolyzed again by the ultra-high temperature generated by the electromagnetic induction heater 3.

[0040] The electromagnetic induction heater 3 includes a cooling fan 301 and a temperature control probe 302. The electromagnetic induction heater 3 is fixedly installed on the outer walls of the first outer cylinder 108 and the second outer cylinder 201. The operating temperature range of the electromagnetic induction heater 3 is 300°C to 600°C. It heats the first outer cylinder 108 to 350°C and the second outer cylinder 201 to 500°C through electromagnetic induction heating. The temperature control probe 302, fixedly installed on the outer walls of the first outer cylinder 108 and the second outer cylinder 201, monitors the temperature of the outer walls of the cylinders in real time. The cooling fan 301, installed inside the electromagnetic induction heater 3, cools the heater itself to prevent overheating.

[0041] The discharge port of the secondary tar residue drying and pyrolysis equipment 2 is fixedly connected to the inlet of the screw conveyor 4. The material processed by the secondary tar residue drying and pyrolysis equipment 2 enters the screw conveyor 4. The discharge port of the screw conveyor 4 is fixedly connected to the vertical conical ribbon dryer 5. After being conveyed by the screw conveyor 4, the material enters the vertical conical ribbon dryer 5. Under the condition that the internal operating pressure is atmospheric pressure, the outer wall of the vertical conical ribbon dryer 5 is also heated to an operating temperature of 500 degrees Celsius by electromagnetic heating. The ultra-high temperature facilitates the discharge of the material, thus facilitating the discharge of the material into the hopper in the vertical conical ribbon dryer 5.

[0042] The first gas phase outlet 111 in the primary tar residue drying and pyrolysis equipment 1 and the second gas phase outlet 202 in the secondary tar residue drying and pyrolysis equipment 2 are both connected to the condensate storage tank 601. The top of the condensate storage tank 601 is integrally equipped with a condenser 6, and its bottom is fixedly connected to the recovery solvent storage tank 7. The condenser 6 is fixedly connected to the vacuum pump 8. The ultra-high temperature gas generated by the primary tar residue drying and pyrolysis equipment 1 and the secondary tar residue drying and pyrolysis equipment 2 is processed by the condensate storage tank 601, and the resulting liquid is recycled through the recovery solvent storage tank 7. The vacuum pump 8 transports and discharges the cooled gas.

[0043] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural, procedural, or functional transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A continuous production equipment, characterized in that, include: The primary tar residue drying and pyrolysis equipment (1) includes a motor reducer (101), a coupling (102), a conveying rod (107), a stirring shaft (109), and an arc-shaped scraper (110). The motor reducer (101) drives the conveying rod (107) and the stirring shaft (109) to rotate through the coupling (102). An arc-shaped scraper (110) is fixed on the outer wall of the stirring shaft (109). The conveying rod (107) is installed inside the bearing seat (103) by means of a shaft seal (104); The conveying cylinder (106) and the first outer cylinder (108) are integrally connected, and the other end is vertically connected to the discharge cylinder (112). The top of the discharge cylinder (112) is provided with a sight glass (105).

2. The continuous production equipment according to claim 1, characterized in that: The arc-shaped scrapers (110) are arranged in a spiral shape to form a flat flow structure.

3. The continuous production equipment according to claim 1, characterized in that: One end of the conveying cylinder (106) has a conical structure, which is used to push out solid materials and keep the liquid inside the first outer cylinder (108).

4. The continuous production equipment according to claim 1, characterized in that: The sight glass (105) of the discharge cylinder (112) is made of borosilicate glass or sapphire glass.

5. A continuous production equipment according to claim 1, characterized in that: It also includes a secondary tar residue drying and pyrolysis device (2), which is connected to the discharge cylinder (112) of the primary tar residue drying and pyrolysis device (1).

6. A continuous production equipment according to claim 1, characterized in that: It also includes an electromagnetic induction heater (3), which is fixedly installed on the outer walls of the first outer cylinder (108) and the second outer cylinder (201), and includes a temperature control probe (302) and a cooling fan (301). The temperature control probe (302) is fixedly installed on the outer wall of the first outer cylinder (108) and the second outer cylinder (201), and the cooling fan (301) is fixedly installed inside the electromagnetic induction heater (3).

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