Device for cleaning ABS (Acrylonitrile Butadiene Styrene) resin polymer flat plate heater

Abstract

The utility model belongs to the technical field of chemical equipment, and discloses a device for cleaning an ABS (Acrylonitrile Butadiene Styrene) resin polymer flat plate heater, which comprises a circulating pump (1), a heat exchanger (2) and two cleaning tanks, a cleaning agent filling opening is formed in the circulating pump (1), and an outlet of the circulating pump (1) is connected with an inlet of the heat exchanger (2); the two cleaning tanks are arranged in parallel, inlets of the two cleaning tanks are connected with an outlet of the heat exchanger (2) through pipelines, and outlets of the two cleaning tanks are connected with an inlet of the circulating pump through pipelines. According to the utility model, gelatinization substances and carbonized particles generated between the heater plates can be effectively removed, so that the product quality is improved, the energy consumption is reduced, and the damage to the flat plate is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, in particular to a device for cleaning an ABS resin polymer flat plate heater. Background Art

[0002] After polymerization, ABS polymer will be evaporated through the secondary devolatilizer heater to remove unreacted monomers. During long-term operation, ABS polymer will generate gum and carbonized particles between the aluminum plates of the heater under high temperature conditions, affecting the heat exchange effect, increasing energy consumption and affecting the quality of ABS resin products.

[0003] The flat plate heater used in the devolatilizer of the ABS (PS) device is relatively large, and is generally made of aluminum with multiple fins stacked on top of each other. Generally, the heater adopts carbonization or incineration, but due to material and structural problems, the heater will have high temperature and uneven heating, causing the flat plate heater to deform and become scrapped. In order to ensure the cleaning effect of the flat plate heater and prevent it from being damaged, a set of special cleaning device for the flat plate heater is now designed. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to ensure the cleaning effect of the flat plate heater while preventing it from being damaged.

[0005] In order to solve the above technical problems, the specific technical solutions of the utility model are as follows:

[0006] A device for cleaning an ABS resin polymer flat plate heater comprises a circulation pump 1, a heat exchanger 2 and two cleaning tanks; the circulation pump 1 is provided with a cleaning agent filling port, and the outlet of the circulation pump 1 is connected to the inlet of the heat exchanger 2; the two cleaning tanks are arranged in parallel, the inlets of the two cleaning tanks are connected to the outlet of the heat exchanger 2 through pipelines, and the outlets of the two cleaning tanks are connected to the inlet of the circulation pump through pipelines.

[0007] Among them, the circulation pump is a centrifugal pump.

[0008] Wherein, the cleaning agent is NMP solvent.

[0009] The utility model has the following advantages: the glue and carbonized particles generated between the heater plates can be effectively removed, thereby improving product quality and reducing energy consumption, and the plates will not be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of a device for cleaning an ABS resin polymer flat plate heater according to the utility model;

[0011] Explanation of the markings in the figure: 1. Circulation pump; 2. Heat exchanger; 3. Cleaning tank 1; 4. Cleaning tank 2. DETAILED DESCRIPTION

[0012] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0013] like Figure 1 As shown, the device for cleaning an ABS resin polymer flat plate heater of the utility model comprises a circulation pump 1, a heat exchanger 2, a cleaning tank 1 3 and a cleaning tank 2 4. A cleaning agent filling port is provided on the circulation pump 1, the outlet of the cleaning agent circulation pump is connected to the inlet of the heat exchanger 2, the outlet of the heat exchanger 2 is connected to the inlets of two cleaning tanks through a pipeline, the two cleaning tanks are arranged in parallel, and the outlets of the cleaning tanks are connected to the inlet of the cleaning agent circulation pump through a pipeline.

[0014] Two cleaning tanks are connected in parallel with the heat exchanger and the circulation pump. The flat plate heater is fixed in the closed cleaning tank. NMP solvent is selected as the cleaning agent. The cleaning agent is filled to a certain tank position, a circulation is established, and the temperature of the cleaning agent is controlled. The flat plate heater is soaked for a certain period of time and the circulation cleaning is started.

[0015] Embodiment 1

[0016] Two new cleaning tanks were built. The tank top inlet was equipped with a flange seat that matches the flange of the top fixing plate of the flat heater. The tank top flange has a tank bottom support. The dotted line in the figure is the support, which aims to reduce the supporting force of the tank body on the flat heater.

[0017] A new heat exchanger is added. In this case, the heat exchanger uses hot water as the heat source and the temperature is controlled at 80-90℃.

[0018] A new cleaning agent circulation pump is added, which is a centrifugal pump with a head of about 80m3 / h. A large-range circulation pump is used to give the heater a better flushing force. A filter and a cleaning agent filling line are configured at the pump inlet.

[0019] The circulation device is equipped with necessary temperature, pressure and liquid level control devices.

[0020] The top inlet of the cleaning tank is equipped with a metal hose for easy connection to the heater.

[0021] This embodiment uses NMP solvent as a cleaning agent to establish a circulating cleaning. Initially, the two cleaning tanks are filled with cleaning agent until the liquid level is 80%, and the circulation pump is started to establish the cleaning agent circulation, and the filling is continued to 75%. The temperature starts to rise with hot water, and the pressure is observed. The cleaning tank pressure relief device is adjusted to maintain a slight positive pressure in the cleaning tank. The cleaning agent temperature is maintained at about 70°C, and the cleaning agent is circulated for 72 hours to complete the cleaning.

[0022] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make several modifications and improvements without departing from the principle of the present invention, and these modifications and improvements should also be considered to belong to the protection scope of the present invention.

Claims

1. A device for cleaning an ABS resin polymer flat plate heater, characterized in that: The invention comprises a circulation pump (1), a heat exchanger (2) and two cleaning tanks; the circulation pump (1) is provided with a cleaning agent filling port, and the outlet of the circulation pump (1) is connected to the inlet of the heat exchanger (2); the two cleaning tanks are arranged in parallel, the inlets of the two cleaning tanks are connected to the outlet of the heat exchanger (2) through pipelines, and the outlets of the two cleaning tanks are connected to the inlet of the circulation pump through pipelines.

2. The device for cleaning ABS resin polymer flat panel heater according to claim 1, characterized in that: The circulation pump is a centrifugal pump.

3. The device for cleaning ABS resin polymer flat panel heater according to claim 1, characterized in that: The cleaning agent is NMP solvent.

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