CN217699211U - Outer circulation ethoxylation reaction heat regulation and control system - Google Patents
Outer circulation ethoxylation reaction heat regulation and control system Download PDFInfo
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- CN217699211U CN217699211U CN202221778152.0U CN202221778152U CN217699211U CN 217699211 U CN217699211 U CN 217699211U CN 202221778152 U CN202221778152 U CN 202221778152U CN 217699211 U CN217699211 U CN 217699211U
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Abstract
The utility model discloses an extrinsic cycle ethoxylation heat regulation and control system relates to ethoxylation equipment field, include: the device comprises a reaction unit, an external circulation channel, a heat exchange unit capable of switching heating modes or cooling modes, a cooling water supply unit and a steam heat supply unit, wherein the cooling water supply unit comprises a deionized water storage tank for containing water for removing calcium, magnesium and chloride ions; the utility model discloses in only utilize a heat exchanger to realize heating and refrigerated switching, reduce the space and occupy to get rid of the water of calcium magnesium chloride ion through the setting and be the cooling water, can avoid scale deposit and the problem of intercrystalline corrosion, improve device's life, water outlet and steam row mouth all are linked together with the deionized water storage tank simultaneously, can realize the cyclic utilization to the water resource.
Description
Technical Field
The utility model relates to an ethoxylation equipment field especially relates to an extrinsic cycle ethoxylation heat regulation and control system.
Background
The external circulation ethoxylation device takes EO feeding speed as the main regulating quantity of reaction heat and the flow and the temperature of a heat exchange medium as the secondary regulating quantity of the reaction heat, the regulating aim is to ensure that the EO polymerization speed is maximum, the EO feeding speed and the flow of the heat exchange medium are regulated by valves, the temperature of the heat exchange medium is regulated by mixing cold and hot media, and the temperature and the pressure change of materials in a reaction kettle are the main regulating models.
The temperature change in the reaction kettle is determined by the EO polymerization heat release and the heat transfer factors of the external heat exchanger, when the EO polymerization heat release is larger than the heat transfer of the heat exchanger, the temperature rises; otherwise, the temperature is reduced, the temperature of the materials in the reaction kettle is increased, which means that the EO polymerization heat release is larger than the heat transfer heat, otherwise, the polymerization heat release is smaller than the heat transfer heat, so that the method for transferring heat in and out in the reaction is the most important link for determining the efficiency of the external circulation ethoxylation reaction.
The invention patent with the application number of 200810024366.7 and the name of high-efficiency energy-saving steam-free ethoxylation reaction device discloses an ethoxylation reaction device for controlling the temperature of materials through two heat exchangers, but the arrangement of the two heat exchangers causes the space occupation to be larger and the full utilization of water resources cannot be realized.
Although heat exchangers with integrated heating and cooling are disclosed in the prior art, for example: the application number is '201710351762. X', the name is 'a spiral plate type heat exchanger integrating heating and cooling', when cooling and heating are integrated, after cooling water enters a heat exchange medium circulation cavity with higher temperature, calcium and magnesium ions can form a structure, and chloride ions can generate intergranular corrosion on welding seams of the heat exchanger, so that the service life of the heat exchanger is seriously influenced.
Therefore, an external circulation ethoxylation reaction heat regulation and control system which occupies a small space, has a long service life and can realize the cyclic utilization of water resources is urgently needed.
Disclosure of Invention
The utility model aims at providing an extrinsic cycle ethoxylation reaction heat regulation and control system to solve the problem that above-mentioned prior art exists, only utilize a heat exchanger to realize heating and refrigerated switching, reduce the space and occupy, and get rid of the water of calcium magnesium chloride ion through the setting and be the cooling water, can avoid the problem of scale deposit and intercrystalline corrosion, improve the life of device, realize the cyclic utilization to the water resource simultaneously.
In order to achieve the above purpose, the utility model provides a following scheme: the utility model provides an extrinsic cycle ethoxylation heat regulation and control system, including reaction unit, extrinsic cycle passageway, changeable heating pattern or cooling pattern's heat transfer unit, cooling water supply unit and steam heat supply unit, extrinsic cycle passageway with heat transfer unit's material circulation chamber intercommunication, cooling water supply unit is including being used for holding the deionized water storage tank that removes calcium, magnesium, chloride ion water, the deionized water storage tank and steam heat supply unit all with heat transfer unit's heat transfer medium circulation chamber intercommunication, the water export that the condensate that produces after being used for supplying cooling water and the steam heat transfer after the heat transfer in the heat transfer medium circulation chamber flows with the deionized water storage tank is linked together, the steam escape of heat transfer medium circulation chamber with the deionized water storage tank is linked together.
Preferably, the water outlet of the deionized water storage tank is connected with the cooling water inlet of the heat exchange medium circulation cavity through a cooler, a cooling water circulating pump is arranged between the water outlet of the deionized water storage tank and the cooling water inlet of the heat exchange medium circulation cavity, and the water outlet of the heat exchange medium circulation cavity is arranged at the bottom end of the heat exchange medium circulation cavity.
Preferably, the heat exchange unit is a spiral plate heat exchanger, and the cooler is a plate heat exchanger.
Preferably, the steam heat supply unit is a steam generating device, a steam outlet of the steam generating device is connected with a steam inlet of the heat exchange medium circulation cavity, and the steam outlet of the heat exchange medium circulation cavity is arranged at the top end of the heat exchange medium circulation cavity.
Preferably, valves are arranged at the cooling water inlet, the water outlet, the water vapor inlet and the steam outlet of the heat exchange medium circulation cavity.
Preferably, a steam discharge pipeline is arranged at the top end of the material circulation cavity and communicated with the deionized water storage tank.
Preferably, the steam discharge pipeline and the steam discharge port of the heat exchange medium circulation cavity share one pipeline communicated with the deionized water storage tank.
Preferably, the top end of the deionized water storage tank is provided with an exhaust passage, and the exhaust passage is provided with a safety pressure relief valve.
Preferably, a drainage channel is arranged at the bottom end of the deionized water storage tank, and a drain valve is arranged on the drainage channel.
Preferably, the deionized water storage tank is provided with a deionized water inlet for supplying water for removing calcium, magnesium and chloride ions.
The utility model discloses for prior art gain following technological effect:
1. the utility model discloses in utilize a changeable heating mode or cooling mode's heat transfer unit to realize heating or cooling to the material, compare in setting up a heating unit and a cooling unit, the occupation space of integrated device has been saved, on this basis, what be used for holding in the deionized water storage tank of supply cooling water is the calcium that removes, magnesium, the water of chloride ion, can effectively avoid appearing when heat transfer unit switches to cooling mode from the heating mode, after the cooling water gets into the heat transfer medium circulation chamber that has higher temperature, calcium magnesium ion scale deposit under the influence of high temperature, when blockking up the heat transfer medium circulation chamber, chloride ion forms intergranular corrosion to heat transfer unit's weld joint under high temperature, lead to heat transfer unit to take place the problem of leaking, effectively guarantee heat transfer unit's normal operating, the life of heat transfer unit is improved, cooling water after the heat transfer in addition, the waste steam that the water that produces behind the steam heat transfer and steam escape all gets into the deionized water storage tank, realize the cyclic utilization of water resource, resource utilization is improved.
2. The utility model discloses in through setting up the cooler, the cooling deionized water storage tank supplies the deionized water of the heat transfer medium circulation intracavity of heat transfer unit, has improved the cooling effect to the material.
3. The utility model discloses the top of well material circulation chamber sets up steam escape pipe way, steam escape pipe way and deionized water storage tank intercommunication for the steam that produces when heating the material also can be utilized, has improved the utilization ratio of resource greatly.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a schematic structural view of the system for regulating and controlling the quantity of heat generated in the external circulation ethoxylation reaction of the present invention;
wherein, 1, a reaction kettle; 2. a material circulating pump; 3. a rotating plate heat exchanger; 4. a deionized water storage tank; 5. a cooling water inlet; 6. a water outlet; 7. a water vapor inlet; 8. a steam outlet; 9. a steam generating device; 10. a plate heat exchanger; 11. a cooling water circulation pump; 12. a safety relief valve; 13. a water escape valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing an extrinsic cycle ethoxylation reaction heat regulation and control system to solve the problem that prior art exists, only utilize a heat exchanger to realize heating and refrigerated switching, reduce the space and occupy, and get rid of the water of calcium magnesium chloride ion through the setting and be the cooling water, can avoid the problem of scale deposit and intercrystalline corrosion, improve device's life realizes the cyclic utilization to the water resource simultaneously.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, an external circulation ethoxylation reaction heat regulation and control system is provided, which includes a reaction unit, an external circulation channel, a heat exchange unit capable of switching between a heating mode and a cooling mode, a cooling water supply unit, and a steam heat supply unit, where the external circulation channel is communicated with a material circulation cavity of the heat exchange unit, the cooling water supply unit includes a deionized water storage tank 4 for storing water with calcium, magnesium, and chloride ions removed, the deionized water storage tank 4 and the steam heat supply unit are both communicated with a heat exchange medium circulation cavity of the heat exchange unit, a water outlet 6 in the heat exchange medium circulation cavity for allowing cooling water after heat exchange and condensate water generated after steam heat exchange to flow out is communicated with the deionized water storage tank 4, a steam outlet 8 in the heat exchange medium circulation cavity is communicated with the deionized water storage tank 4, and a heat exchange unit capable of switching between a heating mode and a cooling mode is used to heat or cool a material, compared with the arrangement of a heating unit and a cooling unit, the occupied space of the whole device is saved, on the basis, water for removing calcium, magnesium and chloride ions is contained in the deionized water storage tank 4 for supplying cooling water, the problem that the heat exchange unit leaks due to intergranular corrosion of the chloride ions on a welding seam of the heat exchange unit at high temperature when the heat exchange unit is switched from a heating mode to a cooling mode after the cooling water enters a heat exchange medium circulation cavity with higher temperature and scales under the influence of high temperature to block the heat exchange medium circulation cavity can be effectively avoided, the normal operation of the heat exchange unit is effectively ensured, the service life of the heat exchange unit is prolonged, in addition, cooling water after heat exchange, condensed water generated after heat exchange of water vapor and waste vapor discharged from the vapor discharge port 8 all enter the deionized water storage tank 4, the cyclic utilization of water resources is realized, the resource utilization rate is improved, the heat supply unit is selected as the steam heat supply unit, and the steam does not contain calcium, magnesium and chloride ions, so that after condensed water generated after the heat exchange of the steam and waste steam discharged from the steam discharge port 8 enter the deionized water storage tank 4, the environment without calcium, magnesium and chloride ions in the deionized water storage tank 4 can not be damaged.
In order to improve the cooling effect of the heat exchange unit, the water outlet of the deionized water storage tank 4 is connected with the cooling water inlet 5 of the heat exchange medium circulation cavity through a cooler, a cooling water circulating pump 11 is arranged between the water outlet of the deionized water storage tank 4 and the cooling water inlet 5 of the heat exchange medium circulation cavity, the water outlet 6 of the heat exchange medium circulation cavity is arranged at the bottom end of the heat exchange medium circulation cavity, deionized water cooled by the cooler enters the heat exchange medium circulation cavity for heat exchange, and meanwhile, the deionized water returns to the deionized water storage tank 4 after heat exchange and can be cooled by the cooler again, so that the cooling capacity of the deionized water is still kept when the deionized water is recycled.
Since the cooling medium in the cooler does not enter the circulation path of the deionized water, the cooling medium of the cooler may be selected from common cooling water.
In this embodiment, the heat exchange unit adopts a spiral plate type heat exchanger 3, the cooler adopts a plate type heat exchanger 10, and other heat exchangers may be selected according to actual conditions.
The steam heat supply unit is a steam generating device 9, the steam generating device generates steam with higher temperature by heating water, a steam outlet 8 of the steam generating device 9 is connected with a steam inlet 7 of the heat exchange medium circulation cavity, and the steam outlet 8 of the heat exchange medium circulation cavity is arranged at the top end of the heat exchange medium circulation cavity.
Valves are arranged at a cooling water inlet 5, a water outlet 6, a water vapor inlet 7 and a steam outlet 8 of the heat exchange medium circulation cavity, and in order to improve the intelligence of the system, a control system can be used for controlling the opening and closing of each valve so as to realize the switching between a cooling mode and a heating mode.
Because the material need heat drying process to it when putting into outer circulation system, also can produce steam during the heating, consequently, the top of material circulation chamber sets up the steam discharge pipeline, the steam discharge pipeline with deionized water storage tank 4 intercommunication for the steam that produces when heating the material also can be utilized, has improved the utilization ratio of resource greatly.
The steam discharge pipeline and the steam discharge port 8 of the heat exchange medium circulation cavity share one pipeline communicated with the deionized water storage tank 4, so that the use of the pipeline is saved, the production cost of the device is reduced, specifically, the steam discharge pipeline, the steam discharge port 8 and the deionized water storage tank 4 can be connected through a three-way pipe, at the moment, valves are required to be arranged between the three-way pipe and the steam discharge pipeline and between the three-way pipe and the steam discharge port 8, and the control of exhaust of the three-way pipe and the steam discharge port is realized.
Because the steam that produces after exhaust steam and material are dried all inputs to deionized water storage tank 4 in, in order to avoid the pressure rise in deionized water storage tank 4, consequently be provided with exhaust passage on the 4 tops of deionized water storage tank, the last safety relief valve 12 that is provided with of exhaust passage.
In order to conveniently replace the deionized water, a drainage channel is arranged at the bottom end of the deionized water storage tank 4, and a drain valve 13 is arranged on the drainage channel.
And the deionized water storage tank 4 is provided with a deionized water inlet for supplying water for removing calcium, magnesium and chloride ions.
The reaction unit is a reaction kettle 1, and the external circulation system comprises a circulation channel and a material circulation pump 2 arranged on the circulation channel.
In the actual use process, a valve at the position of a steam inlet 7 and a steam outlet 8 of a heat exchange medium circulation cavity is opened, steam is generated by a steam generating device 9, the steam enters the heat exchange medium circulation cavity to exchange heat with materials to heat the materials, the steam generated by the heated materials and waste steam flow into a cooling water storage tank together, the heated materials enter a reaction unit to undergo ethoxylation reaction, the reaction releases heat, the materials with higher temperature circulate into the material circulation cavity again through an external circulation channel, when the heating mode needs to be switched to the cooling mode, the valve at the steam inlet 7 of the heat exchange medium circulation cavity is closed, the valve at the cooling water inlet 5 of the heat exchange medium circulation cavity is opened, a cooling water circulation pump 11 is started, the deionized water enters the heat exchange medium circulation cavity after being cooled, the residual steam is extruded, the valve at the steam outlet 8 is closed, the valve at the water outlet 6 is opened, the cooled deionized water exchanges heat with the materials, when the cooling mode needs to be switched to the cooling mode, the valve at the cooling water inlet 5 is closed, the valve at the steam inlet 7 of the heat exchange medium cavity is opened, the steam outlet 6 is opened, the steam is firstly, the steam is extruded to heat exchange of the deionized water, and the material is extruded from the steam outlet 6, and the deionized water outlet is closed, so that the deionized water of the deionized water is heated materials, and the heat exchange is heated materials.
The adaptability that carries out according to actual demand all is in the protection scope of the utility model.
It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. The external circulation ethoxylation reaction heat regulation and control system is characterized by comprising a reaction unit, an external circulation channel, a heat exchange unit capable of switching a heating mode or a cooling mode, a cooling water supply unit and a steam heating unit, wherein the external circulation channel is communicated with a material circulation cavity of the heat exchange unit, the cooling water supply unit comprises a deionized water storage tank for containing water from which calcium, magnesium and chloride ions are removed, the deionized water storage tank and the steam heating unit are communicated with the heat exchange medium circulation cavity of the heat exchange unit, a water outlet for outflow of cooling water after heat exchange and condensate water generated after steam heat exchange in the heat exchange medium circulation cavity is communicated with the deionized water storage tank, and a steam outlet of the heat exchange medium circulation cavity is communicated with the deionized water storage tank.
2. The system for regulating and controlling the quantity of heat generated by the ethoxylation reaction of an external circulation of claim 1, wherein the water outlet of the deionized water storage tank is connected with the cooling water inlet of the heat exchange medium circulation chamber through a cooler, a cooling water circulation pump is arranged between the water outlet of the deionized water storage tank and the cooling water inlet of the heat exchange medium circulation chamber, and the water outlet of the heat exchange medium circulation chamber is arranged at the bottom end of the heat exchange medium circulation chamber.
3. The system for regulating and controlling the heat of an external circulation ethoxylation reaction of claim 2, wherein the heat exchange unit is a rotary plate heat exchanger and the cooler is a plate heat exchanger.
4. The system for regulating and controlling the heat of the external circulation ethoxylation reaction of claim 2, wherein the water vapor heat supply unit is a water vapor generating device, a vapor outlet of the water vapor generating device is connected with a water vapor inlet of the heat exchange medium circulation cavity, and a vapor outlet of the heat exchange medium circulation cavity is arranged at the top end of the heat exchange medium circulation cavity.
5. The system for regulating and controlling the quantity of heat generated in the external circulation ethoxylation reaction of claim 4, wherein valves are arranged at the cooling water inlet, the water outlet, the water vapor inlet and the steam outlet of the heat exchange medium circulation cavity.
6. The system for regulating and controlling the heat of an external circulation ethoxylation reaction of claim 1, wherein a steam discharge pipeline is arranged at the top end of the material circulation cavity and is communicated with the deionized water storage tank.
7. The system for regulating and controlling the quantity of heat generated in the external circulation ethoxylation reaction of claim 6, wherein the steam discharge pipeline and the steam discharge port of the heat exchange medium circulation cavity share a pipeline communicated with the deionized water storage tank.
8. The system for regulating and controlling the heat of an external circulation ethoxylation reaction of claim 1, wherein an exhaust passage is arranged at the top end of the deionized water storage tank, and a safety pressure relief valve is arranged on the exhaust passage.
9. The system for regulating and controlling the heat of an external circulation ethoxylation reaction of claim 8, wherein a drain channel is arranged at the bottom end of the deionized water storage tank, and a drain valve is arranged on the drain channel.
10. The system for regulating and controlling the heat of the external circulation ethoxylation reaction of claim 9, wherein the deionized water storage tank is provided with a deionized water inlet for supplying water for removing calcium, magnesium and chloride ions.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221778152.0U CN217699211U (en) | 2022-07-08 | 2022-07-08 | Outer circulation ethoxylation reaction heat regulation and control system |
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| CN202221778152.0U CN217699211U (en) | 2022-07-08 | 2022-07-08 | Outer circulation ethoxylation reaction heat regulation and control system |
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| CN217699211U true CN217699211U (en) | 2022-11-01 |
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| CN202221778152.0U Active CN217699211U (en) | 2022-07-08 | 2022-07-08 | Outer circulation ethoxylation reaction heat regulation and control system |
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