A reactor heat exchange device for a sodium methylallyl sulfonate production system
Patent Information
- Application Number
- CN202522301865.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-10-30
AI Technical Summary
该反应过程为放热反应，初始开车时需要蒸汽升温，后续反应不再需要大量蒸汽时，反应产生的反应热无法及时从系统内抽离，造成反应系统温度波动较大，影响反应压力和进料流量的波动，造成反应配比失衡，反应异常
[0007]本实用新型的有益效果是：本实用新型通过新增热水换热管线，解决了反应过程温度、压力波动大引起的反应不完全、反应变质问题。
Smart Images
Figure CN224912363U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fine chemical technology, specifically to a reactor heat exchange device for a sodium methyl propylene sulfonate production system. Background Technology
[0002] In the process of reacting methyl allyl chloride with sodium sulfite (mass ratio 1.1:1) to produce a 20% sodium sulfonate solution, a four-stage tubular reactor is typically used in series, where the reaction liquid from the previous stage overflows into the next stage reactor. This reaction is exothermic, requiring steam for initial heating. However, as the subsequent reaction no longer requires a large amount of steam, the heat generated cannot be effectively removed from the system, causing significant temperature fluctuations. This affects the reaction pressure and feed flow rate, leading to imbalances in the reaction ratios and abnormal reactions.
[0003] Although the reaction system includes an over-temperature alarm and DCS interlock, and cools down by circulating water after over-temperature, the large temperature difference between the circulating water and the reaction heat can cause large fluctuations in temperature and pressure during the reaction process due to the sudden drop in reaction heat. This can affect the operation of the production system, leading to incomplete reaction, product deterioration due to over-temperature reaction, and in severe cases, production accidents. Therefore, using circulating water for cooling is not suitable for long-term operation. Utility Model Content
[0004] The present invention aims to solve the above-mentioned problems by providing a reactor heat exchange device for a sodium methyl propylene sulfonate production system.
[0005] This utility model is achieved through the following technical solution: a heat exchange device for a reactor in the production of sodium methyl methacrylate, comprising a reactor, wherein the steam inlet and outlet of the reactor are circulatedly connected to a reaction heat exchanger via pipelines, characterized in that the inlet of the reaction heat exchanger is connected to a hot water tank via an inlet pipe, the inlet pipe is equipped with a regulating valve, the outlet is connected to a hot water pump via an outlet pipe, the inlet and outlet are also connected via a circulation pipe, the circulation pipe is equipped with a hot water forced circulation pump, and a pressure gauge is provided on the front side of the hot water forced circulation pump.
[0006] Furthermore, the reactor is equipped with a temperature sensor, and a temperature sensor is also installed at the outlet of the reaction heat exchanger. Both the temperature sensor and the regulating valve are connected to the control system.
[0007] The beneficial effects of this utility model are: by adding a hot water heat exchange pipeline, this utility model solves the problems of incomplete reaction and reaction deterioration caused by large temperature and pressure fluctuations during the reaction process.
[0008] By using a hot water forced circulation pump to circulate hot water in the heat exchange pipeline and a temperature feedback regulating valve to control the hot water output, the reaction temperature is stabilized, fluctuations in reaction pressure are avoided, and the equipment is guaranteed to continuously and stably produce high-quality products.
[0009] This device is safe to operate and reduces the risk of emergency shutdown of the reaction unit. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model; In the attached diagram, 1 is the reactor, 2 is the reaction heat exchanger, 3 is the inlet pipe, 4 is the regulating valve, 5 is the outlet pipe, 6 is the pressure gauge, 7 is the hot water forced circulation pump, 8 is the reaction circulation pump, and 9 is the temperature sensor. Detailed Implementation
[0011] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the technical solutions of this utility model are further explained below in conjunction with the embodiments.
[0012] like Figure 1 As shown, a heat exchange device for a sodium methacrylate production reactor 1 includes a reactor 1. The steam inlet and outlet of the reactor 1 are circulatedly connected to a reaction heat exchanger 2 via pipelines. The inlet of the reaction heat exchanger 2 is connected to a hot water tank via an inlet pipe 3. A regulating valve 4 is provided on the inlet pipe 3. The outlet is connected to a hot water pump via an outlet pipe 5. The inlet and outlet are also connected by a circulation pipe. A hot water forced circulation pump 7 is provided on the circulation pipe. A pressure gauge 6 is provided on the front side of the hot water forced circulation pump 7.
[0013] Temperature sensor 9 is installed on reactor 1, and temperature sensor 9 is also installed at the outlet of reaction heat exchanger 2. Temperature sensor 9 and regulating valve 4 are both connected to the control system.
[0014] In use, methyl allyl chloride reacts with sodium sulfite in reactor 1 to produce sodium sulfonate. The heat released during the reaction enters the reaction heat exchanger 2 through a pipe. Hot water is introduced into the jacket of the reaction heat exchanger 2 for heat exchange. That is, the hot water pump is started to allow hot water to enter the reaction heat exchanger 2 from the hot water tank. Then the hot water forced circulation pump 7 is started to allow the hot water to circulate and exchange heat in the reaction heat exchanger 2, thereby avoiding fluctuations caused by excessive temperature difference.
[0015] Interlocking regulation is established by temperature controller and regulating valve 4, that is, regulating valve 4 is used to control the hot water outflow to achieve the purpose of stabilizing the reaction temperature, and then the reaction pressure is controlled by the reaction material to ensure the long-term stable production operation of the equipment.
[0016] Apart from the technical features described in the specification, all other technical features are known to those skilled in the art.
Claims
1. A reactor heat exchange device for a sodium methyl propylene sulfonate production system, comprising a reactor (1), wherein the steam inlet and outlet of the reactor (1) are circulatedly connected to a reaction heat exchanger (2) via pipelines, characterized in that, The inlet of the reaction heat exchanger (2) is connected to the hot water tank through the inlet pipe (3). The inlet pipe (3) is equipped with a regulating valve (4). The outlet is connected to the hot water pump through the outlet pipe (5). The inlet and outlet are also connected through a circulation pipe. The circulation pipe is equipped with a hot water forced circulation pump (7). A pressure gauge (6) is provided on the front side of the hot water forced circulation pump (7).
2. The reactor heat exchange device for a sodium methyl propylene sulfonate production system according to claim 1, characterized in that, The reactor (1) is equipped with a temperature sensor (9), and the outlet of the reaction heat exchanger (2) is also equipped with a temperature sensor (9). The temperature sensor (9) and the regulating valve (4) are both connected to the control system.
3. The reactor heat exchange device for a sodium methyl propylene sulfonate production system according to claim 1, characterized in that, A reaction circulation pump (8) is installed on the circulation pipeline connecting the reactor (1) and the reaction heat exchanger (2).