A heat conduction oil heating reaction kettle cooling system

Abstract

The utility model discloses a kind of heat conduction oil heating reaction kettle cooling system, it is related to chemical production technical field, the utility model includes reaction kettle and circulation pipeline, the circulation pipeline includes heat conduction oil into kettle pipeline and heat conduction oil out of kettle pipeline, heat exchanger is also installed on the heat conduction oil out of kettle pipeline, heat conduction oil discharge pipeline is equipped between the heat conduction oil out of kettle pipeline and the reaction kettle and the heat exchanger, cooling output pipeline is equipped between the heat exchanger and the heat conduction oil into kettle pipeline, the heat exchanger input end is equipped with circulating water input pipeline and hot water input pipeline, the heat exchanger output end is equipped with circulating water output pipeline and hot water output pipeline.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical production, specifically a system for cooling a reaction vessel using heat transfer oil. Background Technology

[0002] The reactor needs to use heat transfer oil for heating (generally, the operating temperature of heat transfer oil is 250℃~280℃). The common method for cooling is to set up a cold oil tank around the reactor and inject the cold oil into the reactor jacket or inner coil to cool the material. After exchanging heat with the material, the temperature of the cold oil rises. After being cooled by a heat exchanger, it returns to the cold oil tank. The above solution requires the separate purchase and long-term filling of a large amount of low-temperature heat transfer oil. The equipment occupies a large area and has high initial investment and operating costs. Utility Model Content

[0003] To address the aforementioned problems, specifically those raised in the background section, this invention proposes a system for cooling a reactor heated by thermal oil. The system includes a reactor and a circulation pipeline. The circulation pipeline includes a thermal oil inlet pipeline and a thermal oil outlet pipeline. A heat exchanger is installed on the thermal oil outlet pipeline. A thermal oil discharge pipeline is located on the thermal oil outlet pipeline, between the reactor and the heat exchanger. A cooling output pipeline is located between the heat exchanger and the thermal oil inlet pipeline. A circulating water inlet pipeline and a hot water inlet pipeline are located at the input end of the heat exchanger, and a circulating water outlet pipeline and a hot water outlet pipeline are located at the output end of the heat exchanger.

[0004] Preferably, a circulation pump is provided on the heat transfer oil outlet pipeline and between the heat transfer oil outlet pipeline and the heat exchanger.

[0005] Preferably, the circulation pipeline connected to the reactor and the input and output ends of the heat exchanger are each equipped with several valves.

[0006] The beneficial technical effects of this utility model are as follows: it eliminates the low-temperature heat transfer oil tank and its supporting system, reduces the amount of heat transfer oil to be filled, and saves equipment costs and land area; the high-temperature section uses steam condensate to recover heat, which can generate hot water or low-pressure steam for use by other equipment in the plant, resulting in significant savings in standard coal; the low-temperature section switches to circulating water cooling to ensure that the reactor can be quickly cooled to the target temperature, shortening the batch cycle; the system is closed-loop, with no new types of oil, fewer leakage points, and simple operation and maintenance. Attached Figure Description

[0007] Figure 1 A schematic diagram of the system of this utility model is shown.

[0008] Attached reference numerals: 1. Reactor; 2. Heat transfer oil inlet pipe; 3. Heat transfer oil outlet pipe; 4. Heat transfer oil outlet pipe; 5. Circulating pump; 6. Heat exchanger; 7. Cooling output pipe; 8. Circulating water inlet pipe; 9. Hot water inlet pipe; 10. Circulating water outlet pipe; 11. Hot water outlet pipe. Detailed Implementation

[0009] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0010] This utility model proposes a cooling system for a reactor heated by thermal oil, comprising a reactor 1 and a circulation pipeline. The circulation pipeline includes a thermal oil inlet pipeline 2 and a thermal oil outlet pipeline 3. A heat exchanger 6 is also installed on the thermal oil outlet pipeline 3. A thermal oil outlet pipeline 4 is provided on the thermal oil outlet pipeline 3 between the reactor 1 and the heat exchanger 6. A cooling output pipeline 7 is provided between the heat exchanger 6 and the thermal oil inlet pipeline 2. A circulating water inlet pipeline 8 and a hot water inlet pipeline 9 are provided at the input end of the heat exchanger 6. A circulating water outlet pipeline 10 and a hot water outlet pipeline 11 are provided at the output end of the heat exchanger 6. A circulation pump 5 is provided on the thermal oil outlet pipeline 3 between the thermal oil outlet pipeline 4 and the heat exchanger 6. Several valves are provided on the circulation pipeline connected to the reactor 1 and at the input and output ends of the heat exchanger 6.

[0011] Example 1 (Hot Water Recovery Mode) The reaction is complete, and the reactor temperature is 260 ℃. Circulation pump 5 is started, and the high-temperature heat transfer oil enters the tube side of heat exchanger 6 via heat transfer oil outlet pipe 3; simultaneously, the circulating water side valve is closed, and hot water inlet pipe 9 and hot water outlet pipe 11 are opened. All high-temperature steam condensate from the plant enters heat exchanger 6, is heated, and then sent to the hot water tank for use in other processes. The heat transfer oil temperature drops to 95 ℃ and returns to the reactor jacket via cooling outlet pipe 7 to participate in the next round of heating.

[0012] Example 2 (Circulating Water Cooling Mode) Once the heat transfer oil temperature drops to 95℃, close the hot water side valve and open the circulating water inlet pipe 8 and circulating water outlet pipe 10. The low-temperature circulating water enters the heat exchanger 6 to further cool the heat transfer oil. After meeting the process requirements, stop the pump to complete the cooling process.

[0013] This utility model achieves all the functions of the traditional "dual tank dual oil" system through a simple structure of "one pump, one heat exchanger and multiple valves". It also has multiple advantages such as heat recovery, equipment simplification, cost reduction and safe operation. It can be widely used in reaction vessels of fine chemical industry that use heat transfer oil for heating.

[0014] While this invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from its scope. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0015] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 according to the specific circumstances.

[0017] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0018] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A system for cooling a reactor heated by heat transfer oil, comprising a reactor (1) and a circulation pipeline, characterized in that: The circulation pipeline includes a heat transfer oil inlet pipeline (2) and a heat transfer oil outlet pipeline (3). A heat exchanger (6) is also installed on the heat transfer oil outlet pipeline (3). A heat transfer oil outlet pipeline (4) is provided on the heat transfer oil outlet pipeline (3) and located between the reactor (1) and the heat exchanger (6). A cooling output pipeline (7) is provided between the heat exchanger (6) and the heat transfer oil inlet pipeline (2). A circulating water inlet pipeline (8) and a hot water inlet pipeline (9) are provided at the input end of the heat exchanger (6). A circulating water outlet pipeline (10) and a hot water outlet pipeline (11) are provided at the output end of the heat exchanger (6).

2. The system for cooling a reaction vessel heated by heat transfer oil according to claim 1, characterized in that: A circulation pump (5) is provided on the heat transfer oil outlet pipeline (3) and between the heat transfer oil discharge pipeline (4) and the heat exchanger (6).

3. A cooling system for a reaction vessel heated by heat transfer oil according to claim 1, characterized in that: The circulation pipeline connected to the reactor (1) and the input and output ends of the heat exchanger (6) are equipped with several valves.

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