Circulating cooling equipment using desalted water
By using desalted water instead of circulating cooling water in the acylation reactor, and controlling the flow and temperature through the circulation pump and temperature regulating valve, the scaling problem in the acylation reactor is solved, and the stability and efficient heat exchange of long-term and large-load operation are achieved.
Patent Information
- Application Number
- CN202422379511.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-27
AI Technical Summary
When the circulating cooling device in the existing acylation reactor is running for a long time, the inner coil and the inner tube wall of the outer jacket are fouled, which affects the heat exchange effect, resulting in the inability to operate at a large load, and requires regular stopping and cleaning, affecting the long-term operation of the device.
Desalinated water is used instead of circulating cooling water, and forced circulation is carried out through the circulation pump. Combined with the temperature regulating valve in the desalinated water pump, the inlet and outlet flow and temperature of the desalinated water are controlled to avoid scaling, and the structure of the desalinated water storage tank, annular pipe, circulation pump and cooler is designed.
It avoids scaling of the internal coil and external jacket, ensures that the device operates for a long period of time and at a large load, and does not require regular parking and cleaning, which improves the operating stability and efficiency of the equipment.
Smart Images
Figure CN223165794U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circulating cooling of desalted water, and specifically relates to a circulating cooling device using desalted water. Background Art
[0002] In the production process of MMA, the reaction between sulfuric acid and acetone cyanohydrin in the acylation reactor is an exothermic reaction, and the reaction temperature is controlled at 91 - 95 °C. In order to remove heat, circulating cooling water is required to circulate and cool in the internal coil and external jacket of the reactor.
[0003] The inventor found the following problems in the prior art during the implementation of the present utility model: During long-term operation, scale will form on the inner walls of the internal coil and the external jacket, affecting the heat exchange effect, resulting in the inability to operate at high load, and regular shutdown for cleaning is required, seriously affecting the long-term and high-load operation of the device. Content of the Utility Model
[0004] In view of the deficiencies of the prior art, the present utility model provides a circulating cooling device using desalted water, which solves the problems that during long-term operation of the existing cooling device, scale will form on the inner walls of the internal coil and the external jacket, affecting the heat exchange effect, resulting in the inability to operate at high load, and regular shutdown for cleaning is required, seriously affecting the long-term and high-load operation of the device.
[0005] To achieve the above objectives, the present utility model is realized through the following technical solutions: A circulating cooling device using desalted water includes a desalted water storage tank and an acylation reactor. The desalted water storage tank is connected to a desalted water inlet pipe through a pipeline, and a valve is provided in the pipeline between the desalted water inlet pipe and the desalted water storage tank. An annular pipe is provided in the desalted water storage tank, and a desalted water pump is provided in the annular pipe. The annular pipe is connected to the input end of a circulating pump through a pipeline. An internal coil is provided in the acylation reactor, and an external jacket is provided on the outer wall surface of the acylation reactor. The output end of the circulating pump is connected to both the internal coil and the external jacket through pipelines. The acylation reactor is connected to the input end of the circulating pump through a pipeline and is provided with a valve. The external jacket of the acylation reactor is connected to the input end of a cooler through a pipeline, and the output end of the cooler is connected to the desalted water storage tank through a pipeline. The external jacket of the acylation reactor is connected to the input end of the circulating pump through a pipeline and is provided with a valve.
[0006] Preferably, multiple pipelines are provided at the connections between the external jacket and the cooler and the circulating pump, and valves are provided on all of them.
[0007] Preferably, a temperature control valve is provided in the desalted water pump.
[0008] Advantageous Effects
[0009] The utility model provides a circulating cooling device using demineralized water. The utility model designs a water circulation cooling scale formation prevention. The reaction heat is removed by the demineralized water introduced into the internal coil and the external jacket. These two parts of water are forced to circulate by a circulating pump. The outlet temperature of the demineralized water in the internal coil is regulated and controlled by a temperature regulating valve in the demineralized water pump, and the inlet and outlet flow rates of the demineralized water for supplementing new demineralized water to the demineralized water storage tank and removing demineralized water are controlled through the demineralized water inlet pipe. After the demineralized water is used to replace the circulating cooling water in this application, the inner tube walls of the internal coil and the external jacket of the reactor will not scale, and there is no need to stop the machine for cleaning regularly, which will not affect the long-term and large-load operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0011] In the figure: 1, demineralized water storage tank; 2, demineralized water inlet pipe; 3, demineralized water pump; 4, circulating pump; 5, acylation reactor; 6, cooler. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0012] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0013] Please refer to Figure 1 , the present utility model provides a technical solution: a circulating cooling device using demineralized water, including a demineralized water storage tank 1 and an acylation reactor 5. The demineralized water storage tank 1 is connected to a demineralized water inlet pipe 2 through a pipeline. A valve is provided in the pipeline between the demineralized water inlet pipe 2 and the demineralized water storage tank 1. An annular pipe is provided in the demineralized water storage tank 1, and a demineralized water pump 3 is provided in the annular pipe. The annular pipe is connected to the input end of a circulating pump 4 through a pipeline. An internal coil is provided in the acylation reactor 5, and an external jacket is provided on the outer wall surface of the acylation reactor 5. The output end of the circulating pump 4 is connected to both the internal coil and the external jacket through pipelines. The acylation reactor 5 is connected to the input end of the circulating pump 4 through a pipeline and is provided with a valve. The external jacket of the acylation reactor 5 is connected to the input end of a cooler 6 through a pipeline. The output end of the cooler 6 is connected to the demineralized water storage tank 1 through a pipeline. The external jacket of the acylation reactor 5 is connected to the input end of the circulating pump 4 through a pipeline and is provided with a valve.
[0014] In this embodiment, it is further set that multiple pipelines are provided at the connections between the external jacket and the cooler 6 and the circulating pump 4, and valves are provided on all of them.
[0015] In this embodiment, it is further set that a temperature control valve is provided in the desalination water pump 3.
[0016] The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and the specific work is as follows.
[0017] Embodiment: The reaction in the acylation reactor 5 of this device is an exothermic reaction, and the reaction heat is removed by the desalinated water introduced into the internal coil and the external jacket. These two parts of water are forced to circulate by the circulation pump 4. The temperature regulating valve in the desalination water pump 3 regulates and controls the outlet temperature of the desalinated water in the internal coil, and controls the desalinated water inlet pipe 2 and the valve connected between the desalinated water inlet pipe 2 and the desalination water storage tank 1 to supplement the new desalinated water to the desalination water storage tank 1 and remove the inlet and outlet flow rates of the desalinated water. The desalinated water in the desalination water storage tank 1 is circulated and cooled by the annular pipe and the desalination water pump 3, and the temperature of the desalinated water entering the desalination water storage tank 1 is regulated and controlled by the cooler 6 through cooling. The desalinated water entering the desalination water storage tank 1 is regulated and controlled by the temperature regulating valve in the desalination water pump 3 through the outlet water temperature to control the flow rate entering the internal coil and the external jacket.
[0018] Among them, the circulation pump 4 circulates the desalinated water in the internal coil and the external jacket. After the water in the internal coil and the external jacket comes out, it can enter the cooler 6 for cooling and then enter the desalination water storage tank 1 for storage. The water flow circulates and cools under the cooperation of the annular pipe and the desalination water pump 3. When the water flow in the desalination water storage tank 1 is insufficient, the desalinated water inlet pipe 2 replenishes the desalinated water in the desalination water storage tank 1, and then the desalinated water enters the cooling cycle of the circulation pump 4 and the acylation reactor 5. If the temperature of the desalinated water is not high, the valve on the pipeline between the external jacket and the input end of the circulation pump 4 is opened to directly carry out the water cooling cycle.
[0019] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.
Claims
1. A circulating cooling device using demineralized water, comprising a demineralized water storage tank (1) and an acylation reactor (5), characterized in that, The demineralized water storage tank (1) is connected to a demineralized water inlet pipe (2) through a pipeline. A valve is provided in the pipeline between the demineralized water inlet pipe (2) and the demineralized water storage tank (1). An annular pipe is provided in the demineralized water storage tank (1), and a demineralized water pump (3) is provided in the annular pipe. The annular pipe is connected to the input end of a circulation pump (4) through a pipeline. An internal coil is provided in the acylation reactor (5), and an external jacket is provided on the outer wall surface of the acylation reactor (5). The output end of the circulation pump (4) is connected to both the internal coil and the external jacket through pipelines. The acylation reactor (5) is connected to the input end of the circulation pump (4) through a pipeline and is provided with a valve. The external jacket of the acylation reactor (5) is connected to the input end of a cooler (6) through a pipeline. The output end of the cooler (6) is connected to the demineralized water storage tank (1) through a pipeline. The external jacket of the acylation reactor (5) is connected to the input end of the circulation pump (4) through a pipeline and is provided with a valve.
2. The circulating cooling equipment using demineralized water according to claim 1, characterized in that Multiple pipelines are provided at the connection points of the external jacket with the cooler (6) and the circulation pump (4), and valves are provided on all of them.
3. The circulating cooling equipment using demineralized water according to claim 1, characterized in that, A temperature control valve is provided in the demineralized water pump (3).