Wax oil separation structure for horizontal rotary plastic and rubber oil refining device

Abstract

The utility model discloses a wax oil separation structure for a horizontal rotary plastic and rubber oil refining device, which comprises a wax tank, one side of the top of the wax tank is provided with a pyrolysis oil gas inlet communicated with a gas outlet of a cracking reaction kettle, and the top of the wax tank is also provided with a condenser convenient for liquefying wax oil gas; and the bottom of the condenser is communicated with the wax tank. By utilizing the physical characteristics of high specific gravity and low condensation point of wax oil, wax oil gas gasified from the horizontal oil refining device is instantly captured and settled into the wax tank, light components rise, penetrate through the condenser and enter the oil gas cooling device, the wax oil components are prevented from entering the oil gas cooling device, and the problem that a pipeline is blocked by the wax oil is well solved; and by arranging a condensation temperature adjusting system of the condenser, the condensation temperature of the condenser is further guaranteed, the liquidation effect of the wax gas is further guaranteed, and the situation that the liquidation effect of the wax gas is affected by too high or too low temperature of the condenser is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic and rubber refining equipment, in particular to a wax-oil separation structure used in a horizontal rotating plastic and rubber refining device. Background Art

[0002] In horizontal rotary plastic and rubber refining plants, wax oil typically refers to a waxy substance formed during the processing of plastics or rubber. This wax oil may be an additive in the raw materials, a degradation product, or a byproduct of the production process. The presence of wax oil can affect product quality and processing, so it needs to be separated from the final product. Traditional methods for wax oil separation generally include three: 1. Centrifugation: This uses centrifugal force to separate wax oil from other components. Horizontal rotary plants use the centrifugal force generated by rotation to push wax oil toward the outer wall of the cylinder, achieving separation. 2. Filtration: In some cases, filters or filter elements can be used to remove solid wax oil. 3. Sedimentation: This utilizes density differences to allow wax oil to naturally settle to the bottom of the separator, achieving separation. These separation methods consume high energy and have limited wax oil separation effectiveness. Inadequate wax oil separation can easily lead to wax oil components entering the oil-gas cooling system and clogging the pipelines. Effectively addressing these issues is a critical challenge in plastic cracking and rubber refining plants. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a wax-oil separation structure for a horizontal rotating plastic and rubber refining device, comprising a wax tank, a pyrolysis oil and gas inlet connected to the gas outlet of a cracking reactor is provided on one side of the top of the wax tank, and a condenser is also provided on the top of the wax tank for liquefying the wax oil and gas; the bottom of the condenser is connected to the wax tank.

[0004] Preferably, a water inlet is provided on one side of the bottom of the condenser, and a water outlet is provided on one side of the upper portion of the condenser.

[0005] Preferably, an oil and gas outlet is also provided on the upper portion of the condenser.

[0006] Preferably, an inspection door is provided at one end of the wax tank.

[0007] Preferably, a wax oil drain port is provided at one end of the wax tank.

[0008] Preferably, the condenser also includes a condensing temperature control system, which includes a cooling water distributor, a condenser, and a cooling water return tank. The cooling water distributor and the condenser are connected by an inlet pipe, and the condenser and the cooling water return tank are connected by an outlet pipe.

[0009] Preferably, it also includes a temperature control unit for adjusting the water inlet and outlet of the condenser.

[0010] Preferably, the temperature control and adjustment unit includes a controller, a water inlet valve installed on the water inlet pipe, a water inlet temperature sensor installed on the cooling water distributor, and a water outlet temperature sensor installed on the water outlet pipe, and the controller is electrically connected to the water inlet temperature sensor, the water outlet temperature sensor, and the water inlet valve, respectively.

[0011] Preferably, the water inlet valve is a pneumatic automatic regulating valve.

[0012] Preferably, the controller is a DCS controller.

[0013] Compared with the existing technology, the beneficial effects of the present invention are as follows: the present invention utilizes the physical properties of high specific gravity and low freezing point of wax oil, and the wax oil gas vaporized from the horizontal oil refining device is instantly captured and precipitated into the wax tank, and the light components rise through the condenser and enter the oil and gas cooling device, thereby preventing the wax oil components from entering the oil and gas cooling device, and effectively solving the problem of wax oil clogging the pipeline; through the condensation temperature adjustment system of the condenser, the condensation temperature of the condenser is further guaranteed, thereby ensuring the liquefaction effect of the wax gas, and avoiding the liquefaction effect of the wax gas affected by its temperature being too high or too low. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model provides a schematic diagram of the overall structure of a wax-oil separation structure for a horizontal rotary plastic and rubber refining device.

[0015] Figure 2 The utility model provides a simplified structural diagram of a temperature control system for the upper and middle condensers of a horizontal rotary plastic and rubber refining device.

[0016] In the figure, wax tank 1, pyrolysis oil and gas inlet 2, condenser 3, water inlet 4, water outlet 5, oil and gas outlet 6, inspection door 11, wax oil drain port 12;

[0017] Cooling water distributor 31 , water inlet valve 32 , water inlet temperature sensor 33 , water outlet temperature sensor 34 , controller 35 . DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Referring to the diagram, this embodiment provides a wax-oil separation structure for a horizontal rotating plastic and rubber refining device, comprising a wax tank 1, a pyrolysis oil and gas inlet 2 connected to the gas outlet of the cracking reactor is provided on one side of the top of the wax tank 1, and a condenser 3 is also provided on the top of the wax tank for liquefying the wax oil and gas; the bottom of the condenser 3 is connected to the wax tank 1.

[0020] Furthermore, a water inlet 4 is provided on one side of the bottom of the condenser 3, and a water outlet 5 is provided on one side of the upper portion of the condenser. The water outlet 5 can be connected to an external return pipe to facilitate the return of water to the cooling water station.

[0021] Furthermore, an oil and gas outlet 6 is provided on the upper portion of the condenser 3 .

[0022] Furthermore, an inspection door 11 is provided at one end of the wax tank 1 .

[0023] Furthermore, a wax oil drain port 12 is provided at one end of the wax tank 1 .

[0024] Furthermore, the condenser 3 also includes a condensation temperature control system, which includes a cooling water distributor 31. The cooling water distributor 31 is connected to the condenser through a water inlet pipe, so that cooling water enters the condenser from the water inlet.

[0025] Furthermore, a temperature control unit is included for regulating the water inlet and outlet of the condenser. Specifically, the temperature control unit includes a controller, an inlet valve 32 mounted on the water inlet pipe, an inlet temperature sensor 33 mounted on the cooling water distributor, and an outlet temperature sensor 34 mounted on the outlet pipe. The controller 35 is electrically connected to the inlet temperature sensor, the outlet temperature sensor, and the inlet valve, respectively. Here, the temperature control unit can pre-set system parameters. The temperature control unit analyzes the temperatures transmitted by the two temperature sensors and automatically adjusts the opening of the inlet valve to control the water inlet to the condenser, ensuring that the temperature is more accurately controlled within the set temperature range and that the real-time temperature is consistent with the wax, oil, and gas liquefaction temperature range.

[0026] Preferably, the water inlet valve is a pneumatic automatic regulating valve. This valve uses compressed air as its power source and a pneumatic cylinder as its actuator. It is driven by accessories such as an electric valve positioner, converter, solenoid valve, and positioning valve to achieve volumetric or proportional regulation of the water inlet pipe. It receives control signals from an industrial automatic control system to regulate the flow rate in the water inlet pipe. This valve is characterized by simple operation, rapid response, and a high safety factor.

[0027] Preferably, the controller is a DCS controller.

[0028] Working principle: The wax tank is connected to the gas outlet of the cracking reactor. When the pyrolysis oil and gas pass through the wax tank to the condenser, the wax oil with a lower freezing point is liquefied into wax oil in the condenser and drips into the wax tank. The light component gas with a high freezing point continues to rise until it passes through the oil and gas outlet of the condenser.

[0029] In addition, the measured temperatures of the cooling water inlet and outlet temperature sensors are transmitted back to the DCS system. The DCS system controls the valve opening of the pneumatic automatic control valve through temperature analysis, thereby controlling the cooling water inlet volume to adjust the condenser temperature to achieve the set temperature value, so that the real-time temperature is consistent with the preset temperature range. At the same time, the cooling water return temperature is automatically controlled.

[0030] In the above embodiments and working principles, the utility model utilizes the physical properties of high specific gravity and low freezing point of wax oil. The wax oil gas vaporized from the horizontal oil refining device is instantly captured and precipitated into the wax tank, and the light components rise through the condenser and enter the oil and gas cooling device, preventing the wax oil components from entering the oil and gas cooling device, thereby effectively solving the problem of wax oil clogging the pipeline.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wax-oil separation structure for a horizontal rotating plastic or rubber refining device, characterized in that: It comprises a wax tank, a pyrolysis oil and gas inlet connected to the gas outlet of the cracking reactor is provided on one side of the top of the wax tank, and a condenser for liquefying the wax oil and gas is also provided on the top of the wax tank; the bottom of the condenser is connected to the wax tank.

2. The wax-oil separation structure for a horizontal rotary plastic or rubber refining device according to claim 1, characterized in that: A water inlet is provided on one side of the bottom of the condenser, and a water outlet is provided on one side of the upper portion of the condenser.

3. The wax-oil separation structure for a horizontal rotary plastic or rubber refining device according to claim 1, characterized in that: An oil and gas outlet is also provided on the upper portion of the condenser.

4. The wax-oil separation structure for a horizontal rotary plastic or rubber refining device according to claim 1, characterized in that: An inspection door is provided at one end of the wax tank.

5. The wax-oil separation structure for a horizontal rotary plastic or rubber refining device according to claim 1, characterized in that: One end of the wax tank is provided with a wax oil drain port.

6. The wax-oil separation structure for a horizontal rotary plastic or rubber refining device according to claim 1, characterized in that: The condenser also includes a condensing temperature control system, which includes a cooling water distributor and a cooling water return tank. The cooling water distributor is connected to the condenser via an inlet pipe, and the condenser is connected to the cooling water return tank via an outlet pipe.

7. The wax-oil separation structure for a horizontal rotary plastic or rubber refining device according to claim 1, characterized in that: It also includes a temperature control unit for adjusting the water inlet and outlet of the condenser.

8. The wax-oil separation structure for a horizontal rotary plastic or rubber refining device according to claim 7, characterized in that: The temperature control and adjustment unit includes a controller, a water inlet valve installed on the water inlet pipe, a water inlet temperature sensor installed on the cooling water distributor, and a water outlet temperature sensor installed on the water outlet pipe. The controller is electrically connected to the water inlet temperature sensor, the water outlet temperature sensor, and the water inlet valve respectively.

9. The wax-oil separation structure for a horizontal rotary plastic or rubber refining device according to claim 8, characterized in that: The water inlet valve is a pneumatic automatic regulating valve.

10. The wax-oil separation structure for a horizontal rotary plastic or rubber refining device according to claim 8, characterized in that: The controller is a DCS controller.

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