CN215428960U - Alkoxylation reaction heat energy comprehensive utilization system - Google Patents
Alkoxylation reaction heat energy comprehensive utilization system Download PDFInfo
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Abstract
The utility model relates to an alkoxylation reaction heat energy comprehensive utilization system, which comprises a temperature regulating water system, a reactor heat transfer system, a hot water recycling system and a waste heat refrigerating system, wherein the temperature regulating water system is respectively connected with the reactor heat transfer system, the hot water recycling system and the waste heat refrigerating system; the temperature-regulating water system comprises a temperature-regulating water tank, wherein a process side water return port, a process side water supply port, a public side water return port and a public side water supply port are arranged on the temperature-regulating water tank, the process side water return port and the process side water supply port are connected with the reactor heat transfer system, and the public side water return port and the public side water supply port are connected with the hot water recycling system and the waste heat refrigerating system. Compared with the prior art, the utility model has the advantages of high-efficiency heat transfer, comprehensive utilization of reaction heat, energy saving, consumption reduction and the like.
Description
Technical Field
The utility model relates to the technical field of chemical devices, in particular to an alkoxylation reaction heat energy comprehensive utilization system.
Background
The alkoxylation reaction using Ethylene Oxide (EO)/Propylene Oxide (PO) as raw material is an exothermic reaction, the heat of EO/PO reaction needs to be removed, and the common technology is to use circulating cooling water and the like as cooling media and remove the reaction heat through a coil in the reactor or a heat exchanger on a reaction circulating pipeline loop, but the method has high fouling coefficient of the circulating cooling water and high heat transfer thermal resistance, resulting in low heat transfer efficiency. And the alkoxylation reaction is a strong exothermic reaction, and the actual operation proves that the exothermic heat of the reaction is about 55-65 times of the heat for reaction temperature rise, so that the heat recovery is realized, and the method is very important for saving energy, reducing consumption and protecting the environment.
The utility model patent CN105754086B discloses an alkoxylation reaction heat recycling method and a process device thereof, which are characterized in that: the steam recycling process of heating the chain initiator comprises the steps of performing material circulation such as the chain initiator; opening a heat exchange medium heating circulation loop to circulate the heat exchange medium; opening a heat exchange program execution loop to heat a heat exchange medium; circulating in a cascade mode; injecting an alkoxylating agent, starting reaction, stopping heating when the temperature of a heat exchange medium is higher than a set value, starting cooling, starting a low heat recovery utilization loop when the temperature of the heat exchange medium is higher than the temperature in a low heat recovery storage tank and lower than the temperature of a high-temperature user; the temperature of the heat exchange medium is higher than that of a high-heat user, and a high-heat recycling loop and a low-heat recycling loop are simultaneously opened; the temperature of a high heat recovery port of the high heat recovery heat exchanger is higher than the temperature in the low heat recovery storage tank, and a high heat recovery and utilization loop is opened, so that the aims of heat recovery, energy conservation, consumption reduction and environmental protection can be fulfilled. However, the recycling method and the process device have complex systems, need more equipment and related control instruments, and have relatively complex control operation; meanwhile, the recycling method and the utilization of the reaction heat in the process device system only consider energy recycling among different steps of process production operation, and do not consider the expansion of the reaction waste heat into a public engineering system for auxiliary production for recycling.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an alkoxylation reaction heat energy comprehensive utilization system which can efficiently transfer heat and comprehensively utilize reaction heat, save energy and reduce consumption.
The purpose of the utility model can be realized by the following technical scheme: the alkoxylation reaction heat energy comprehensive utilization system comprises a temperature regulating water system, a reactor heat transfer system, a hot water recycling system and a waste heat refrigerating system, wherein the temperature regulating water system is respectively connected with the reactor heat transfer system, the hot water recycling system and the waste heat refrigerating system;
the temperature-regulating water system comprises a temperature-regulating water tank, wherein a process side water return port, a process side water supply port, a public side water return port and a public side water supply port are arranged on the temperature-regulating water tank, the process side water return port and the process side water supply port are connected with the reactor heat transfer system, and the public side water return port and the public side water supply port are connected with the hot water recycling system and the waste heat refrigerating system.
In the utility model, the temperature regulating water tank is used as a connecting device of other systems and a collecting and buffering device of reaction heat, the reactor heat transfer system is used for removing the reaction heat, the hot water recycling system uses the temperature regulating water as a heat source to utilize the heat in the hot water recycling system, the waste heat refrigerating system uses the temperature regulating water as a refrigerating heat source to produce low-temperature water, and the low-temperature water is used for related matched production. To traditional stirred tank formula alkoxylation, atomizing extrinsic cycle alkoxylation, venturi formula alkoxylation etc. homoenergetic utilization this utility model carries out heat energy comprehensive utilization. Meanwhile, a plurality of alkoxylation reaction processes are adopted in the production process, and a set of heat energy comprehensive utilization system in the utility model can be also used.
The utility model removes reaction heat by arranging the temperature-adjusting water system and comprehensively utilizes the heat entering the temperature-adjusting water system, thereby achieving the purpose of reducing energy consumption.
Preferably, the temperature regulating water tank is provided with a steam inlet and a remote thermometer, and a steam pipeline connected with the steam inlet is provided with a steam pressure regulating valve.
Preferably, the temperature regulating water tank is provided with a desalted water inlet and a remote liquid level meter, and a desalted water regulating valve is arranged on a desalted water pipeline connected with the desalted water inlet.
Further preferably, a water discharge pipeline is arranged on a pipeline connected with the public side water return port, and a temperature-adjusting water discharge adjusting valve is arranged on the water discharge pipeline.
Preferably, the temperature regulating water tank is provided with a condensate inlet.
Preferably, the temperature regulating water tank is provided with a nitrogen sealing interface and a remote pressure gauge, the nitrogen sealing interface is connected with a nitrogen pipeline and a vent pipeline, the nitrogen pipeline is provided with a nitrogen sealing regulating valve, and the vent pipeline is provided with a vent regulating valve.
Preferably, a safety valve is arranged on the temperature-adjusting water tank;
preferably, the waste heat refrigerating system adopts a hot water type lithium bromide refrigerator for refrigeration.
Preferably, the reactor heat transfer system comprises a stirred tank type ethoxylation reaction temperature-regulating water cooling system and/or an external circulation type ethoxylation reaction temperature-regulating water cooling system.
Further preferably, the stirred tank type ethoxylation reaction temperature-regulating water cooling system and the external circulation type ethoxylation reaction temperature-regulating water cooling system are provided with branch pipes on a self circulation pipeline, the branch pipes are provided with two-position valves and are respectively connected with a process side water return port and a process side water supply port, and the circulation pipeline between the branch pipes is also provided with the two-position valves. The two valves are opened and closed, so that the stirred tank type ethoxylation reaction temperature-regulating water cooling system and the external circulation type ethoxylation reaction temperature-regulating water cooling system can be connected with a temperature-regulating water system and can be disconnected to enable the temperature-regulating water system to work independently.
The comprehensive utilization method of the alkoxylation reaction heat energy is carried out by adopting the comprehensive utilization system of the alkoxylation reaction heat energy, and comprises the following processes: the temperature-adjusting water in the temperature-adjusting water tank is fed into the reactor heat transfer system from the process side water supply port, absorbs the alkylation reaction heat and returns to the temperature-adjusting water tank through the process side water return port after being heated, the temperature-adjusting water is fed into the hot water recycling system and the waste heat refrigerating system from the common side water supply port, and the heat in the temperature-adjusting water is recycled to cool the temperature-adjusting water and then returns to the temperature-adjusting water tank from the common side water return port.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the alkoxylation reaction heat is comprehensively utilized through temperature-adjusting water, so that the energy consumption of ethoxy production enterprises is reduced;
2. the reactor heat transfer system adopts cleaner temperature-regulating water as a heat transfer medium, reduces the heat transfer thermal resistance of ethoxylation reaction, and maintains the high-efficiency heat transfer of an alkoxylation reaction system;
3. the temperature-regulating water tank can be used as a steam condensate tank while receiving reaction heat, and the heat in the steam condensate is also utilized in a hot water recycling system and a waste heat refrigerating system;
4. the heat source of the cold supply system is supplied by alkoxylation reaction heat, so that the power consumption of the refrigerator is reduced;
5. the whole system is a closed system, no water is lost, the amount of water in the system is increased due to supplemented condensate or steam, and the excessive water is discharged after waste heat utilization and is reused as a desalted water source, cooling water or boiler water supplement;
6. the reaction heat is removed by using the temperature-regulating water, the temperature-regulating water is cleaner than common circulating water, the fouling coefficient is lower, the heat exchange system has less fouling, the heat transfer efficiency is high, the reaction heat removing speed is high, large-flow EO/PO feeding can be used in the reaction process, the ideal operation time of each reactor can be maintained in production, the capacity reduction caused by the reaction heat exchange efficiency reduction is delayed, meanwhile, the fouling speed of the reactor heat transfer system is obviously reduced by using the cleaner temperature-regulating water, the maintenance frequency of the reaction system is reduced, the normal production time is prolonged, and the production efficiency is improved;
7. aiming at the reaction production process taking EO/PO as raw materials, the utility model utilizes the EO/PO reaction to release heat, enters a temperature-adjusting water system, utilizes the heat of the temperature-adjusting water, prepares cold water through a lithium bromide unit, utilizes the heat of the temperature-adjusting water for heating production facilities, heat tracing of pipelines, heat tracing of equipment and the like, reduces the overall energy consumption of related systems through reasonable utilization of reaction heat, and maintains high-efficiency heat transfer of an alkoxylation reaction system through cleaner temperature-adjusting water as a heat transfer medium;
8. the utility model mainly adds equipment of a temperature adjusting water tank and a part of switch valves, and has simple system structure, convenient operation and less investment.
Drawings
FIG. 1 is a schematic structural diagram I of a comprehensive utilization system for thermal energy in alkoxylation reaction according to the present invention;
FIG. 2 is a schematic structural diagram of a heat energy comprehensive utilization system for alkoxylation reaction according to the present invention;
in the figure: 1-a temperature-adjusting water system, 11-a temperature-adjusting water tank, 12-a process side water return port, 13-a process side water supply port, 14-a common side water return port, 15-a common side water supply port, 16-a steam inlet, 17-a desalted water inlet, 18-a condensate inlet, 19-a nitrogen seal interface, 191-a nitrogen pipeline, 192-a vent pipeline, 2-a reactor heat transfer system, 21-a stirring kettle type ethoxy reaction temperature-adjusting water cooling system, 22-an external circulation type ethoxy reaction temperature-adjusting water cooling system, 3-a hot water circulation utilization system, 31-a heat tracing water circulating pump, 4-a waste heat refrigerating system, 41-a hot water type lithium bromide refrigerator, an A-a remote thermometer, a B-a remote liquid level meter, a C-a remote pressure meter and an a steam pressure-adjusting valve, b 1-desalted water regulating valve, b 2-temperature water adjusting discharge regulating valve, c 1-nitrogen seal regulating valve, c 2-emptying regulating valve, d-safety valve, e-two-position valve, f-regulating valve, g-temperature water adjusting cooler, h-temperature water adjusting circulating pump, i-expansion tank, LN-nitrogen, CWS-cooling water supply, CWR-cooling water return, TWS-temperature water adjusting supply, TWR-temperature water adjusting return, BRS-low temperature water supply and BRR-low temperature water return.
Detailed Description
The utility model is described in detail below with reference to the figures and specific embodiments. The following examples are carried out on the premise of the technical scheme of the utility model, and detailed embodiments and specific operation processes are given, but the scope of the utility model is not limited to the following examples.
Example 1
An alkoxylation reaction heat energy comprehensive utilization system is shown in figures 1-2 and comprises a temperature adjusting water system 1, a reactor heat transfer system 2, a hot water recycling system 3 and a waste heat refrigerating system 4, the temperature-regulating water system 1 comprises a temperature-regulating water tank 11, a process side water return port 12, a process side water supply port 13, a public side water return port 14, a public side water supply port 15, a steam inlet 16, a desalted water inlet 17, a condensate inlet 18 and a nitrogen sealing port 19 are arranged on the temperature-regulating water tank 11, the reactor heat transfer system 2 comprises a stirred tank type ethoxylation reaction temperature-regulating water cooling system 21 and an external circulation type ethoxylation reaction temperature-regulating water cooling system 22, the stirred tank type ethoxylation reaction temperature-regulating water cooling system 21 and the external circulation type ethoxylation reaction temperature-regulating water cooling system 22 are both connected with the process side water return port 12 and the process side water return port 13, and the hot water recycling system 3 and the waste heat refrigeration system 4 are both connected with the public side water return port 14 and the public side water supply port 15.
The stirred tank type ethoxylation reaction temperature-regulating water cooling system can be referred to as a coil cooling system for short, the external circulation type ethoxylation reaction temperature-regulating water cooling system can be referred to as an external circulation cooling system for short, and the hot water recycling system can be referred to as a hot water system for short.
Temperature control:
the temperature-regulating water tank 11 is provided with a remote thermometer A, a steam pipeline connected with the steam inlet 16 is provided with a steam pressure regulating valve a, the temperature in the tank is controlled by the remote thermometer A, and when the heat supply demand of the hot water system/waste heat refrigerating system cannot be met by the supplementary heat of the reaction heat and the steam condensate, the steam is introduced into the temperature-regulating water tank 11 by opening the steam pressure regulating valve a, so that the temperature of the temperature-regulating water tank 11 is maintained at a set temperature.
Liquid level control:
a remote transmission liquid level meter B is arranged on the temperature-adjusting water tank 11, a desalted water regulating valve B1 is arranged on the desalted water inlet 17, a drainage pipeline is arranged on a pipeline connected with the public side water return port 14, a temperature-adjusting water discharge regulating valve B2 is arranged on the drainage pipeline, the liquid level in the tank is detected by the remote transmission liquid level meter B, when the liquid level is lower than a set value, the desalted water regulating valve B1 is opened, and the liquid level in the desalted water replenishing tank is increased; when the liquid level is higher than the set value, the temperature-regulating water discharge regulating valve b2 is opened to discharge the redundant temperature-regulating water, and the liquid level in the tank is kept stable. The discharged redundant temperature-adjusting water can be used for boiler water supplement, circulating water supplement and desalted water supplement.
And (3) pressure control:
a remote transmission pressure gauge C is arranged on the temperature-regulating water tank 11, a nitrogen sealing port 19 is connected with a nitrogen pipeline 191 and a vent pipeline 192, the nitrogen pipeline 191 is provided with a nitrogen sealing regulating valve C1, the vent pipeline 192 is provided with a vent regulating valve C2, the pressure in the tank is monitored by the remote transmission pressure gauge C, and when the temperature rises or the liquid level rises to cause the pressure in the tank to increase, the vent regulating valve C2 is opened to discharge the gas in the tank; when the pressure in the tank is reduced due to temperature reduction or liquid level reduction, the nitrogen seal regulating valve c1 is opened to feed low-pressure nitrogen gas, so as to maintain the pressure in the tank stable.
The top of the temperature-regulating water tank 11 is provided with a safety valve d which protects the temperature-regulating water tank 11 from overpressure damage when pressure regulation fails.
More specifically, the structure of the stirred tank type ethoxylation reaction temperature-regulating water cooling system 21 is shown in fig. 2, and comprises a stirred tank type ethoxylation reactor 211, a temperature-regulating water cooler g, a temperature-regulating water circulating pump h, an expansion tank i, a regulating valve f and a two-position valve e. The structure of the external circulation type ethoxylation reaction temperature-regulating water cooling system 22 comprises an ethoxylation reactor 221, an ethoxylation reaction external circulation heat exchanger 222, an ethoxylation reaction circulating pump 223, a temperature-regulating water cooler g, a temperature-regulating water circulating pump h, an expansion tank i, a regulating valve f and a two-position valve e.
Wherein, the stirred tank type ethoxylation reaction temperature-regulating water cooling system 21 and the external circulation type ethoxylation reaction temperature-regulating water cooling system 22 are provided with branch pipes on a self circulation pipeline, the branch pipes are provided with two-position valves e and are respectively connected with the process side water return port 12 and the process side water supply port 13, and the circulation pipeline between the branch pipes is also provided with the two-position valve e.
The stirred tank type ethoxy reaction temperature-regulating water cooling system 21 and the external circulation type ethoxy reaction temperature-regulating water cooling system 22 are respectively used for transferring heat to the stirred tank reaction and the external circulation ethoxy reaction, and the two-position valve e and the branch pipe are designed to be connected with the temperature-regulating water tank 11 to work or to be cut off to independently work with the connection relation of the temperature-regulating water tank 11.
When the stirring kettle type ethoxylation reaction temperature-adjusting water cooling system 21 is connected with the temperature-adjusting water tank 11, the two-position valve e on the branch pipe is opened, the two-position valve e on the circulating pipeline between the branch pipes is closed, the temperature-adjusting water is pressurized by the temperature-adjusting water circulating pump h, is cooled by circulating water through the temperature-adjusting water cooler g, is sent into the heat exchange coil of the stirring kettle type ethoxylation reactor 211 to remove reaction heat, and the temperature-adjusted water returns to the temperature-adjusting water tank 11 after being heated. When the stirring kettle type ethoxylation reaction temperature-adjusting water cooling system 21 is not connected with the temperature-adjusting water tank 11 to work independently, the two-position valve e on the branch pipe is closed, the two-position valve e on the circulating pipeline between the branch pipes is opened, the temperature-adjusting water forms a circulation consisting of a temperature-adjusting water circulating pump h, a temperature-adjusting water cooler g and a stirring kettle type ethoxylation reactor 211 coil, the temperature-adjusting water circulating pump h provides circulation power, the reaction heat is transferred into the temperature-adjusting water by the stirring kettle type ethoxylation reactor 211 heat exchange coil, and the reaction heat is removed by the temperature-adjusting water cooler g through heat exchange of cooling water and the temperature-adjusting water. Wherein, the temperature regulating water cooler g considers the heat exchange capacity according to the independent working condition of the system.
When the temperature-adjusting water cooling system 22 requiring external circulation type ethoxylation reaction is connected with the temperature-adjusting water tank 11, the two-position valve e on the branch pipe is opened, the two-position valve e on the circulating pipeline between the branch pipes is closed, the temperature-adjusting water is pressurized by the temperature-adjusting water circulating pump h, is cooled by circulating water through the temperature-adjusting water cooler g, is sent to the cold side of the ethoxylation reaction external circulation heat exchanger 222 to remove reaction heat, and the temperature-increased temperature-adjusting water returns to the temperature-adjusting water tank 11. When the temperature-adjusting water cooling system 22 requiring external circulation type ethoxylation reaction is not connected with the temperature-adjusting water tank 11 to work independently, the two-position valve e on the branch pipe is closed, the two-position valve e on the circulation pipeline between the branch pipes is opened, the temperature-adjusting water forms a circulation consisting of a temperature-adjusting water circulation pump h, a temperature-adjusting water cooler g and an ethoxylation reaction external circulation heat exchanger 222, the temperature-adjusting water circulation pump h provides circulation power, the ethoxylation reaction external circulation heat exchanger 222 brings reaction heat into the temperature-adjusting water, and the temperature-adjusting water cooler g removes reaction heat through heat exchange between cooling water and the temperature-adjusting water. Wherein, the temperature regulating water cooler g considers the heat exchange capacity according to the independent working condition of the system.
Wherein, the stirring kettle cooling system and the external circulation cooling system select one or more processes according to the process requirements, and the two ethoxy reaction heat transfer modes of 2 and 3 can also be simultaneously adopted for one reaction system. Meanwhile, for a plurality of sets of reaction systems, a plurality of sets of parallel operation can be set.
The hot water recycling system 3 includes a heat tracing water circulation pump 31, and the hot water of the heat circulation can be used for production facility heating 32, pipeline heat tracing 33, equipment heat tracing user one 34, equipment heat tracing user two 35, and other hot water user equipment 36. The hot water recycling system 3 conveys the temperature-adjusting water by adopting a pipeline, and the pressure of the hot water recycling system is increased by the heat tracing water circulating pump 31 to form a circulating hot water system, and the hot water can be used by the following facilities:
(1) indoor heating of production facilities and heating of production posts;
(2) pipeline heat tracing of materials such as alkoxylation products and the like;
(3) (ii) alkoxylation feedstock/product storage tank heat tracing;
(4) other production equipment supplies hot water, such as hot water bath equipment and the like.
The waste heat refrigerating system 4 comprises a hot water type lithium bromide refrigerator 41, a refrigerator heat medium pump 42 and a low-temperature water circulating pump 43, and can be used for slicing equipment 44, slicing storage tank environment and operation post cooling 45, warehouse cooling 46, pipeline cooling 47 and other cold water user equipment 48. The core of the waste heat refrigerating system 4 is a hot water type lithium bromide refrigerator 41, a refrigerator heat medium pump 42 is used for pressurizing and regulating temperature water to supply heat to prepare cold water, and the return water temperature of the common cold water supply is 7/12 ℃. The cold water forms a cold water circulation pipe network after being pressurized by the low-temperature water circulation pump 43, and the main purposes of the cold water comprise:
(1) cooling the alkoxylation product slicer;
(2) the alkoxylation raw material/product warehouse is cooled for cooling (such as a sodium/sodium methoxide raw material warehouse, a slicing product warehouse, a slicing operation workshop, an operation post and the like);
(3) cooling the raw material pipeline;
(4) other cold water equipment users and equipment accompany cold.
Example 2
The heat energy comprehensive utilization system for alkoxylation reaction comprises 3 groups of heat transfer systems 2 with the length of 50m3The water heating recycling system 3 supplies heat tracing to the pipeline and the equipment, and the waste heat refrigerating system 4 is used for cooling the slicing equipment, cooling the slicing production environment and cooling the pipeline. The rest of the structure is the same as in example 1.The system is applied to a 12-kiloton alkoxylation reaction system and is used for producing 1-500 cp alkoxylation products (nonionic surfactants and polyether products). The result shows that the system can save the power consumption of the device by 6-9%.
Example 3
The heat energy comprehensive utilization system for alkoxylation reaction comprises 1 group of heat transfer systems 2 with the length of 50m3Water cooling system of adjusting temperature that external circulating ethoxyl reactor matches, 1 group 15m3The matched temperature-adjusting water cooling system of the external circulation type ethoxy reactor has a hot water recycling system 3 for pipeline heat tracing, equipment heat tracing and production post heat supply, and a waste heat refrigerating system 4 for slicing equipment cold supply, slicing production environment cold supply and warehouse temperature reduction. The rest of the structure is the same as in example 1. The system is applied to a 5-ten-thousand-ton alkoxylation reaction system and is used for producing 1-200 cp alkoxylation products (surfactant products). The result shows that the system can save 5-8% of the power consumption of the device.
Example 4
The heat energy comprehensive utilization system for alkoxylation reaction comprises 3 groups of heat transfer systems 2 with the length of 60m3Temperature-adjusting water cooling system matched with stirred tank reactor, 2 groups of which are 30m3The water cooling system of adjusting temperature that stirred tank reactor matched with, hot water cyclic utilization system 3 supplies pipeline heat tracing, equipment heat tracing, production post heat supply, and waste heat refrigerating system 4 is used for slicing apparatus cooling, slicing production environment cooling, warehouse cooling. The rest of the structure is the same as in example 1. The system is applied to a 15-ten-thousand-ton alkoxylation reaction system and is used for producing 1-500 cp alkoxylation products (environment-friendly auxiliaries, polyether products and high-end surface activity products). The result shows that the system can save the power consumption of the whole plant by 4-6%, and the cleaning interval time of the heat exchange tube of the reaction system is prolonged by 2 times.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The comprehensive utilization system of the heat energy of the alkoxylation reaction is characterized by comprising a temperature regulating water system (1), a reactor heat transfer system (2), a hot water recycling system (3) and a waste heat refrigerating system (4), wherein the temperature regulating water system (1) is respectively connected with the reactor heat transfer system (2), the hot water recycling system (3) and the waste heat refrigerating system (4);
temperature regulating water system (1) including temperature regulating water tank (11), temperature regulating water tank (11) on be provided with technology side return water mouth (12), technology side supply water mouth (13), public side return water mouth (14) and public side supply water mouth (15), technology side return water mouth (12) and technology side supply water mouth (13) move thermal system (2) with the reactor and be connected, public side return water mouth (14) and public side supply water mouth (15) be connected with hot water cyclic utilization system (3) and waste heat refrigerating system (4).
2. The comprehensive utilization system of the thermal energy of the alkoxylation reaction as claimed in claim 1, wherein said temperature-regulating water tank (11) is provided with a steam inlet (16) and a remote thermometer (A), and a steam pressure regulating valve (a) is provided on a steam pipeline connected to said steam inlet (16).
3. The comprehensive utilization system of the thermal energy of the alkoxylation reaction as claimed in claim 1, wherein said temperature-regulating water tank (11) is provided with a desalted water inlet (17) and a remote level meter (B), and a desalted water regulating valve (B1) is provided on the desalted water pipe connected to said desalted water inlet (17).
4. The comprehensive utilization system of heat energy generated by alkoxylation reaction as claimed in claim 3, wherein said pipeline connected to said common side water return port (14) is provided with a water discharge pipeline, and said water discharge pipeline is provided with a temperature-controlled water discharge regulating valve (b 2).
5. The comprehensive utilization system of the thermal energy generated by the alkoxylation reaction as claimed in claim 1, wherein said temperature regulating water tank (11) is provided with a condensate inlet (18).
6. The comprehensive utilization system of the thermal energy of the alkoxylation reaction as claimed in claim 1, wherein said temperature-regulating water tank (11) is provided with a nitrogen seal port (19) and a remote pressure gauge (C), said nitrogen seal port (19) is connected to a nitrogen pipeline (191) and a vent pipeline (192), said nitrogen pipeline (191) is provided with a nitrogen seal regulating valve (C1), and said vent pipeline (192) is provided with a vent regulating valve (C2).
7. The comprehensive utilization system of thermal energy in alkoxylation reaction as claimed in claim 1, wherein said temperature-regulating water tank (11) is provided with a safety valve (d);
the waste heat refrigerating system (4) adopts a hot water type lithium bromide refrigerator (41) for refrigeration.
8. The comprehensive utilization system of thermal energy in alkoxylation reaction as claimed in claim 1, wherein said reactor heat removal system (2) comprises a stirred tank type ethoxy reaction temperature-regulating water cooling system (21) and/or an external circulation type ethoxy reaction temperature-regulating water cooling system (22).
9. The comprehensive utilization system of thermal energy in alkoxylation reactions as claimed in claim 8, wherein said stirred tank type ethoxy reaction temperature-regulating water cooling system (21) and said external circulation type ethoxy reaction temperature-regulating water cooling system (22) have branch pipes on their own circulation pipelines, the branch pipes are provided with two-position valves (e) and are respectively connected with the process side water return port (12) and the process side water supply port (13), and the circulation pipeline between the branch pipes is also provided with two-position valves (e).
10. The comprehensive utilization system of the thermal energy of the alkoxylation reaction according to any one of claims 1 to 6 or 8 to 9, wherein said waste heat refrigerating system (4) adopts a hot water type lithium bromide refrigerator (41) for refrigeration.
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| CN113230994A (en) * | 2021-05-28 | 2021-08-10 | 上海寰球工程有限公司 | System and method for comprehensively utilizing heat energy of alkoxylation reaction |
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| CN113230994A (en) * | 2021-05-28 | 2021-08-10 | 上海寰球工程有限公司 | System and method for comprehensively utilizing heat energy of alkoxylation reaction |
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