CN222069341U - A comprehensive heat utilization system for winery - Google Patents
A comprehensive heat utilization system for winery Download PDFInfo
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- CN222069341U CN222069341U CN202323659926.5U CN202323659926U CN222069341U CN 222069341 U CN222069341 U CN 222069341U CN 202323659926 U CN202323659926 U CN 202323659926U CN 222069341 U CN222069341 U CN 222069341U
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Abstract
本申请涉及余热回收及利用技术领域，具体公开了一种酒厂热量综合利用系统，包括梯级冷却热回收系统，梯级冷却热回收系统包括冷凝器、第一冷却塔、第一集水器，所述冷凝器壳体内设有水腔以及位于水腔内的换热管，水腔上部设有高温冷却回水管，水箱中部设有中温冷却回水管，水腔底部设有低温冷却供水管，高温冷却回水管、中温冷却回水管分别连接有高温换热器、第一中温换热器，高温换热器、第一中温换热器的冷却水出水管均与第一集水器连接，第一集水器与冷却塔连接，冷却塔出水端连接低温换热器，低温换热器与低温冷却供水管连接。本专利的目的在于解决现有酒厂酒蒸汽热量无法有效利用，被大量浪费的问题。
The present application relates to the technical field of waste heat recovery and utilization, and specifically discloses a comprehensive heat utilization system for a winery, including a step cooling heat recovery system, the step cooling heat recovery system including a condenser, a first cooling tower, and a first water collector, the condenser shell is provided with a water cavity and a heat exchange tube located in the water cavity, the upper part of the water cavity is provided with a high-temperature cooling return pipe, the middle part of the water tank is provided with a medium-temperature cooling return pipe, the bottom of the water cavity is provided with a low-temperature cooling water supply pipe, the high-temperature cooling return pipe and the medium-temperature cooling return pipe are respectively connected to the high-temperature heat exchanger and the first medium-temperature heat exchanger, the cooling water outlet pipes of the high-temperature heat exchanger and the first medium-temperature heat exchanger are both connected to the first water collector, the first water collector is connected to the cooling tower, the water outlet end of the cooling tower is connected to the low-temperature heat exchanger, and the low-temperature heat exchanger is connected to the low-temperature cooling water supply pipe. The purpose of this patent is to solve the problem that the heat of wine steam in existing wineries cannot be effectively utilized and is wasted in large quantities.
Description
Technical Field
The utility model relates to the technical field of waste heat recovery and utilization, in particular to a comprehensive utilization system of heat of a winery.
Background
Distilled liquor technology is a traditional method for brewing high alcohol beverages, which, although it has been a history of several hundred years, is still favored by many wine manufacturers and wine lovers. The basic principle is to separate the liquid into two parts, alcohol and water by utilizing the physical characteristics of steam. When the liquid is heated, the alcohol is boiled and converted into steam, and then cooled by a condenser and converted back into liquid; this process will increase the concentration of alcohol until the desired level is reached.
In the condensation process of wine making in a winery, a large amount of cooling water is needed for cooling wine steam, and in order to ensure the outlet water temperature of the wine making, the temperature of the cooling water fed into a cooling device is lower and is usually required to be lower than 30 ℃, so that the temperature of warm water after heat exchange is also lower and is mainly warm water at about 50 ℃; and the cooling water after temperature rising is cooled down again usually only through the cooling tower, so that the working load of the cooling tower is high. Meanwhile, the cooling tower is used for cooling, so that the heat of cooling water at 50 ℃ is directly wasted, and the effective utilization of the heat cannot be formed.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides a comprehensive heat utilization system for a winery, which solves the problems that the heat of wine steam of the traditional winery cannot be effectively utilized and is wasted in a large amount.
In order to solve the problems, the technical scheme adopted by the utility model is that the heat comprehensive utilization system of the winery comprises a cascade cooling heat recovery system; the cascade cooling heat recovery system comprises a condenser, a first cooling tower and a first water collector, wherein a water cavity and a heat exchange tube positioned in the water cavity are arranged in a condenser shell, a high-temperature cooling return pipe is arranged at the upper part of the water cavity, a medium-temperature cooling return pipe is arranged in the middle of the water tank, a low-temperature cooling water supply pipe is arranged at the bottom of the water cavity, the high-temperature cooling return pipe and the medium-temperature cooling return pipe are respectively connected with a high-temperature heat exchanger and a first medium-temperature heat exchanger, cooling water outlet pipes of the high-temperature heat exchanger and the first medium-temperature heat exchanger are connected with the first water collector, the first water collector is connected with the cooling tower, a water outlet end of the cooling tower is connected with the low-temperature heat exchanger, and the low-temperature heat exchanger is connected with the low-temperature cooling water supply pipe;
The low-temperature heat exchanger comprises a low-temperature preheating heat exchanger and a soft water preheating heat exchanger which are connected in parallel, wherein the heat absorption sides of the low-temperature preheating heat exchanger and the medium-temperature heat exchanger are connected in series through pipelines and then are connected with a hot water tank for production, the water inlet end of the heat absorption side of the low-temperature preheating heat exchanger is connected with a tap water production pipeline, tap water for production enters the hot water tank for production after being heated by the low-temperature preheater and the medium-temperature heat exchanger in sequence, and the hot water tank for production is connected with the inlet of the heat absorption side of the medium-temperature heat exchanger through a medium-temperature heat recovery return pipe; the heat absorption sides of the soft water preheating heat exchanger and the high-temperature heat exchanger are connected in series through pipelines, then the soft water heat preservation water tank is connected, the water inlet end of the hot side of the soft water preheating heat exchanger is connected with a normal-temperature soft water supplementing pipe, and the normal-temperature soft water is stored in the soft water heat preservation water tank after being heated by the soft water preheating heat exchanger and the high-temperature heat exchanger in sequence.
The beneficial effect that this scheme produced is: the first cooling tower is matched with the low-temperature heat exchanger to realize the secondary cooling and the tertiary cooling of the cooling water respectively, so that the low-temperature cooling water after heat exchange can be cooled to below 30 ℃ in a high-temperature environment to meet the requirement of the backwater temperature of the cooling water of the condenser, the liquor outlet temperature of liquor is ensured to reach the standard, and the liquor outlet quality is ensured; the tap water and the softened water heated by the low-temperature preheating heat exchanger and the soft water preheating heat exchanger can be respectively sent to the medium-temperature heat exchanger and the high-temperature heat exchanger for secondary heating, the temperature of the tap water and the softened water is increased, and the subsequent heat utilization for production is facilitated.
The boiler flue gas heat recovery system comprises a fresh air preheating chamber, a flue gas heat exchanger and an air preheating heat exchanger, wherein the flue gas heat exchanger and the air preheating heat exchanger are sequentially arranged at a flue gas exhaust pipe of the boiler, an inlet of a water medium pipeline of the flue gas heat exchanger is connected with a soft water heat preservation water tank through a pipeline, an outlet of the water medium pipeline of the flue gas heat exchanger is connected with a second water collector, the second water collector is respectively connected with a high-temperature heat preservation water tank and a heat-using heat exchanger unit, a water outlet end at a heat radiation side of the heat-using heat exchanger unit is connected with the soft water heat preservation water tank through a pipeline, the heat-using heat exchanger unit comprises a production heat exchanger unit, and a heat absorption side pipeline of the production heat exchanger unit is connected with a production heat water tank in series through a pipeline; the water medium pipeline of the air preheating heat exchanger is connected with an air heating heat exchanger, the air heating heat exchanger is arranged in the fresh air preheating chamber, the fresh air preheating chamber is connected with an air supply pipe, one end of the air supply pipe is connected with the air collecting chamber of the boiler, and one end of the air supply pipe, which is positioned in the fresh air preheating chamber, is provided with an air feeder.
The softened water heated by the cascade cooling heat recovery system is conveyed to a flue gas heat exchanger so as to perform heat exchange and heating with high-temperature flue gas, so that the recovery of the waste heat of the flue gas of the boiler is realized, and the heated softened water enters a second water collector to be supplied to each heat unit or enters a high-temperature water storage tank to be stored; the flue gas discharged by the boiler enters an air preheating heat exchanger after heat exchange by a flue gas heat exchanger, meanwhile, low-temperature backwater which is subjected to heat exchange with fresh air in an air heating heat exchanger is pumped to the air preheating heat exchanger, the low-temperature backwater exchanges heat with the flue gas in the air preheating heat exchanger, and the flue gas is discharged from a smoke exhaust pipe after the temperature of the flue gas is reduced; and after the low-temperature backwater is warmed up, the backwater enters an air warming heat exchanger to exchange heat with fresh air, the warmed fresh air is pressurized by a blower and is sent to an air collecting chamber through an air supply pipe, and preheated fresh air warmed up through heat recovery is provided for a blower, so that the production efficiency of the boiler is improved.
Further, the low-temperature cooling water supply pipe is also connected with a refrigeration auxiliary heat exchanger, the refrigeration auxiliary heat exchanger is connected with the low-temperature heat exchanger in series, a heat absorption side pipeline of the refrigeration auxiliary heat exchanger is connected with an auxiliary refrigeration and heating system, the auxiliary refrigeration and heating system comprises a heat pump unit, an energy storage tank and a second cooling tower, chilled water prepared by the heat pump unit is stored in the energy storage tank, the energy storage tank is connected with a heat absorption side inlet of the refrigeration auxiliary heat exchanger through the chilled water supply pipe, and a heat absorption side outlet of the refrigeration auxiliary heat exchanger is connected to an evaporator side of the heat pump unit through a pipeline; the water outlet end of the heat pump unit condenser is connected with a second cooling tower through a heat pump water supply branch pipe, and the second cooling tower is connected with the water inlet end of the heat pump unit condenser through a heat pump water return branch pipe.
When the cooling water cooled by the low-temperature cooling tower and the low-temperature heat exchanger still does not meet the requirement of the water inlet temperature of the condenser, the refrigerating water in the energy storage tank is sent to the heat absorption side of the refrigeration auxiliary heat exchanger, so that the refrigeration auxiliary heat exchanger is started, and the cooling water is further cooled to the set temperature and then is sent back to the condenser. When the temperature of the chilled water in the energy storage tank reaches a set lower limit, the heat pump unit is started to prepare the chilled water for the energy storage tank. When the chilled water is prepared, if the high-temperature heat preservation water tank needs to be warmed or insulated, a circulating pipeline at the condenser side of the heat pump is used for circulating the condenser of the heat pump unit and the high-temperature heat preservation water tank through a heat pump water supply main pipe and a heat pump water return main pipe, so that the heat pump unit is used for preparing the chilled water for the energy storage tank and simultaneously providing high-temperature hot water for the high-temperature heat preservation water tank. When the high-temperature heat preservation water tank does not need heat, the condenser of the heat pump unit and the water of the second cooling tower are cooled in a circulating way through the heat pump water supply branch pipe and the heat pump water return branch pipe.
Further, the medium-temperature cooling return pipe is also provided with a second medium-temperature heat exchanger which is connected with the first medium-temperature heat exchanger in parallel, the energy storage tank is connected with the inlet of a heat absorption side pipeline of the second medium-temperature heat exchanger through a heat pump evaporation water supply pipe, the outlet of the heat absorption side pipeline of the second medium-temperature heat exchanger is connected with the water inlet of an evaporator of the heat pump unit through a heat pump evaporation return pipe, and the water outlet of the evaporator is connected with the energy storage tank; the water outlet end of the heat pump unit condenser is connected with the second water collector through a heat pump water supply main pipe, and the water outlet end of the heat exchange unit heat radiation side is also connected with the water inlet end of the heat pump unit condenser through a heat pump water return main pipe.
Cold water after the evaporator of the heat pump unit absorbs heat and cools down is stored in an energy storage tank, water in the energy storage tank is sent to a second medium-temperature heat exchanger for heat exchange and temperature rise, medium-temperature heat of medium-temperature cooling water in the second medium-temperature heat exchanger is obtained, the medium-temperature heat is sent back to the evaporator, the medium-temperature heat energy is converted into heat energy through heat energy conversion of the heat pump unit and is released to a condenser of the heat pump unit, and heat is sent to a high-temperature heat preservation water tank for heat energy storage or heat energy supply through a heat pump water supply main pipe and a heat pump water return main pipe. Therefore, the heat pump unit has the characteristics of high efficiency and energy conservation, and the temperature of cold water subjected to heat exchange and temperature rise with medium-temperature cooling water is higher than that of cold water in a natural environment and is stable, so that the comprehensive energy efficiency of the heat pump unit can reach 1:8, the heating cost is extremely low.
Further, the low-temperature cooling water supply pipe is also provided with a first temperature sensor, the chilled water supply pipe is provided with a chilled water circulating pump, the first temperature sensor is electrically connected with a first controller, the output end of the first controller is electrically connected with the chilled water circulating pump respectively, and the first controller is used for controlling the frequency of the chilled water circulating pump according to signals input by the first temperature sensor.
When the temperature of the low-temperature cooling water supply pipe is higher than a set value, the first temperature sensor detects that the temperature of cooling water is still not reaching the temperature after the first cooling tower is subjected to full-load working cooling and the temperature of the low-temperature heat exchanger is lowered, the first controller controls the chilled water circulating pump to be opened, and meanwhile, the first controller controls the running frequency of the chilled water circulating pump in real time according to a temperature signal detected by the first temperature sensor, chilled water in the energy storage tank is sent to the heat absorption side of the refrigeration auxiliary heat exchanger, so that the refrigeration auxiliary heat exchanger is started, and the chilled water is further cooled to the set temperature and then is sent back to the condenser.
Further, one side of the high-temperature cooling return pipe, which is close to the condenser, is provided with a second temperature sensor and a high-temperature cooling electric valve, the second temperature sensor is electrically connected with a temperature control meter, the temperature control meter is electrically connected with a relay, the relay is electrically connected with the high-temperature cooling electric valve, and the temperature control meter is used for controlling the relay to be opened and closed according to signals of the second temperature sensor so as to control the high-temperature cooling electric valve to be opened and closed. When the second temperature sensor detects that the outlet water temperature of the condenser is lower than the set temperature, the temperature control meter controls the relay to be closed so as to control the high-temperature cooling electric valve to be closed, and the condition that cooling water which does not meet the temperature requirement enters the high-temperature heat exchanger to influence the heat recovery grade of softened water is avoided.
Further, the second water collector is connected with a water inlet of the boiler through a boiler water supply pipe, and an deoxidizing tank is arranged on the boiler water supply pipe. The softened water heated by the flue gas heat exchanger is pumped to the deoxidizing tank through the water collector and the boiler water supply pipe, the water inlet temperature of the deoxidizing tank is increased, deoxidizing is carried out by the deoxidizing tank, and then the deoxidized softened water is conveyed to the boiler, so that the heat required for forming steam is reduced due to the multi-stage temperature increase of the water inlet temperature of the boiler, the steam production efficiency of the boiler is improved, and the fuel consumption is saved.
Further, the flue gas heat exchanger includes the one-level heat exchanger and the second grade heat exchanger that set gradually along flue gas discharge direction, and soft water heat preservation water tank passes through the pipeline to be connected with the income water end of second grade heat exchanger, and the play water end of second grade heat exchanger is connected with the water inlet end of one-level heat exchanger, and the play water end of one-level heat exchanger is connected with the second water collector. The heat of the boiler flue gas is fully absorbed by the two-stage heat exchanger in a grading way, and the temperature of softened water is gradually increased by the two-stage heat exchanger.
Further, the water outlet end of the first cooling tower is provided with a third temperature sensor, the third temperature sensor is electrically connected with a second controller, the output end of the second controller is electrically connected with a cooling fan and a spray pump of the cooling tower respectively, and the second controller is used for controlling the frequencies of the cooling fan and the spray pump according to signals of the third temperature sensor. And detecting whether the temperature of the water outlet of the cooling tower reaches a set temperature through a third temperature sensor at the water outlet end of the cooling tower, and controlling the frequencies of a cooling fan and a spray pump of the cooling tower in real time by a controller according to the received temperature signals to reduce the temperature of the cooling water to the set temperature.
Drawings
Fig. 1 is a schematic diagram of the system as a whole.
FIG. 2 is a schematic diagram of a cascade cooling heat recovery system.
Fig. 3 is a schematic diagram of a boiler flue gas heat recovery system.
Fig. 4 is a schematic diagram of an auxiliary refrigeration and heating system.
Detailed Description
The following is a further detailed description of the embodiments:
Reference numerals in the drawings of the specification include: the cascade cooling heat recovery system includes: the condenser 1, the cooling tower 11, the third temperature sensor 110, the high-temperature heat exchanger 12, the second temperature sensor 121, the first medium-temperature heat exchanger 13, the second medium-temperature heat exchanger 14, the low-temperature preheating heat exchanger 15, the soft water preheating heat exchanger 16, the refrigeration auxiliary heat exchanger 17, the first temperature sensor 171, the chilled water motor valve 172, the first water collector 18, the hot water tank 19 for production, the soft water heat preservation water tank 2, the water supplementing three-way valve 21, the water supplying three-way valve 22, the soft water heating pipe 23, the soft water supply pipe 24 and the soft water supplementing pipe 25; the boiler flue gas heat recovery system includes: the flue pipe 3, the economizer 31, the primary heat exchanger 32, the secondary heat exchanger 33, the air preheating heat exchanger 34, the deoxidizing tank 35, the air heating heat exchanger 4, the air supply pipe 41, the air collecting chamber 42, the high-temperature heat preservation water tank 5 and the second water collector 51; the auxiliary refrigerating and heating system comprises: the heat pump unit 6, the heat pump water supply main pipe 61, the heat pump backwater main pipe 62, the heat pump water supply branch pipe 63, the heat pump backwater branch pipe 64, the heat pump evaporation water supply pipe 65, the chilled water circulation pump 651, the heat pump evaporation backwater pipe 66, the energy storage tank 7 and the second cooling tower 8.
Example 1 this is shown in fig. 1 and 2:
The utility model provides a winery heat comprehensive utilization system, including step cooling heat recovery system, step cooling heat recovery system includes condenser 1, cooling tower 11, first water collector 18, be equipped with the water cavity in the condenser 1 casing and be located the heat exchange tube in the water cavity, the water cavity upper portion is equipped with high temperature cooling return pipe, the water tank middle part is equipped with the medium temperature cooling return pipe, the water cavity bottom is equipped with the low temperature cooling delivery pipe, high temperature cooling return pipe, medium temperature cooling return pipe is connected with high temperature heat exchanger 12 respectively, first medium temperature heat exchanger 13, high temperature heat exchanger 12, the cooling water outlet pipe of first medium temperature heat exchanger 13 all is connected with first water collector 18, first water collector 18 is connected with cooling tower 11, the low temperature heat exchanger is connected with low temperature cooling delivery pipe to the cooling tower 11 water outlet end;
The low-temperature heat exchanger comprises a low-temperature preheating heat exchanger 15 and a soft water preheating heat exchanger 16 which are connected in parallel, wherein the heat absorption sides of the low-temperature preheating heat exchanger 15 and the medium-temperature heat exchanger are connected in series through pipelines and then are connected with a hot water tank 19 for production, the water inlet end of the heat absorption side of the low-temperature preheating heat exchanger 15 is connected with a tap water production pipeline, tap water for production sequentially passes through the low-temperature preheater and the medium-temperature heat exchanger to be heated and then enters a heat exchange waterway of the hot water tank 19 for production, and the water outlet end of the heat exchange waterway is connected with the inlet of the heat absorption side of the medium-temperature heat exchanger through a medium-temperature heat recovery water return pipe; the heat absorption sides of the soft water preheating heat exchanger 16 and the high temperature heat exchanger 12 are connected in series through pipelines, then the soft water heat preservation water tank 2 is connected, the water inlet end of the hot side of the soft water preheating heat exchanger 16 is connected with the normal temperature soft water supplementing pipe 25, and the normal temperature soft water is stored in the soft water heat preservation water tank 2 after being heated by the soft water preheating heat exchanger 16 and the high temperature heat exchanger 12 in sequence.
The side of the high-temperature cooling return pipe, which is close to the condenser 1, is provided with a second temperature sensor 121 and a high-temperature cooling electric valve, the second temperature sensor 121 is electrically connected with a temperature control meter, the temperature control meter is electrically connected with a relay, the relay is electrically connected with the high-temperature cooling electric valve, and the temperature control meter is used for controlling the relay to be opened and closed according to the signal of the second temperature sensor 121 so as to control the high-temperature cooling electric valve to be opened and closed.
The water outlet end of the first cooling tower 11 is provided with a third temperature sensor 110, the third temperature sensor 110 is electrically connected with a second controller, the output end of the second controller is electrically connected with a cooling fan and a spray pump of the cooling tower 11 respectively, and the second controller is used for controlling the frequencies of the cooling fan and the spray pump according to signals of the third temperature sensor 110.
When the working environment temperature of the equipment is higher, the water outlet temperature of the cooling tower 11 cannot reach the production cooling temperature required by the condenser 1, namely, the water outlet temperature of the cooling tower 11 cannot reach 28 ℃, low-temperature cooling water enters the condenser 1 from a low-temperature cooling water supply pipe, flows from bottom to top in the condenser 1, the middle-temperature cooling water in the middle part of the water cavity after heat exchange passes through a middle-temperature cooling water return pipe and a middle-temperature heat exchanger and then enters the first water collector 18, the high-temperature cooling water at the top of the water cavity is collected in the first water collector 18 after passing through the high-temperature cooling water return pipe and the high-temperature heat exchanger 12, then is pumped to the first cooling tower 11, whether the water outlet temperature of the cooling tower 11 reaches the set temperature is detected by a third temperature sensor 110 at the water outlet end of the cooling tower 11, the set temperature is 32 ℃, and the controller controls the frequencies of a cooling fan and a spray pump carried by the cooling tower 11 in real time according to the received temperature signals, so that the temperature of the cooling water is reduced to the set temperature. Then, the cooling water cooled by the first cooling tower 11 is respectively conveyed to the low-temperature preheating heat exchanger 15 and the soft water preheating heat exchanger 16, so that heat exchange is respectively carried out with tap water for production and softened water on the heat absorption side; the water discharged from the cooling tower 11 is cooled again and then is sent back to the condenser 1 through a low-temperature cooling water supply pipe.
The softened water after primary temperature rising with the soft water preheating heat exchanger 16 is sent into the high-temperature heat exchanger 12 for secondary heat exchange, the high-temperature cooling water is subjected to primary temperature reduction and heat dissipation, meanwhile, the softened water obtains high-temperature heat energy and is stored in the soft water heat preservation water tank 2, if the second temperature sensor 121 detects that the outlet water temperature of the condenser 1 is lower than the set temperature, the temperature control meter controls the relay to be closed so as to control the high-temperature cooling electric valve to be closed, and the cooling water which does not meet the temperature requirement is prevented from entering the high-temperature heat exchanger 12 to influence the heat recovery grade of the softened water; at this time, the cooling water in the condenser 1 is cooled to a set temperature by the medium temperature heat exchanger, the cooling tower 11 and the low temperature heat exchanger. Meanwhile, after the tap water is heated by the low-temperature preheater and the heat absorption side of the medium-temperature heat exchanger in sequence, the tap water is sent to a heat exchange waterway of the hot water tank 19 for production through a pipeline and is subjected to heat exchange with low-temperature water of the hot water tank 19 for production, so that the temperature of the low-temperature water stored in the hot water tank 19 for production is increased.
The two ends of the heat absorbing side of the low-temperature preheating heat exchanger 15 are connected in parallel with a bypass low-temperature pipeline, and the bypass low-temperature pipeline is provided with a bypass valve; the soft water heat preservation water tank 2 is communicated with a soft water supplementing pipe 25 through a soft water supplying pipe 24, the soft water supplementing pipe 25 is connected with the soft water supplying pipe 24 through a water supplementing three-way valve 21, the soft water supplying pipe 24 is connected with a soft water heating pipe 23 through a water supplying three-way valve 22, and one end of the soft water heating pipe 23 is connected with a water inlet end of the heat absorbing side of the high-temperature heat exchanger 12.
When the low-temperature climate does not need a low-temperature heat exchanger to exchange heat, the cooling water can be directly reduced to the set temperature through the cooling tower 11, the bypass valve is opened, and the produced tap water directly flows to the medium-temperature heat exchanger through the bypass pipeline to exchange heat and raise the temperature; meanwhile, the water supply three-way valve 22 enables one side of the soft water supply pipe 24, which is close to the soft water heat preservation water tank 2, to be communicated with the soft water heating pipe 23, so that water in the soft water tank is directly sent to the high-temperature heat exchanger 12 through the soft water heating pipe 23 for heat exchange and heating, and then is sent back to the soft water heat preservation water tank 2. At this time, the water supplementing three-way valve 21 enables the soft water supplementing pipe 25 to be communicated with the soft water supplying pipe 24, the soft water preheating heat exchanger 16 does not work, and the soft water supplementing pipe 25 does not provide low-temperature softened water for the soft water preheating heat exchanger 16; meanwhile, as the water supply three-way valve 22 enables the soft water supply pipe 24 to be communicated with the soft water heating pipe 23 at the side close to the soft water heat preservation water tank 2, the soft water supplementing pipe 25 is not communicated with the soft water heating pipe 23, namely the soft water supplementing pipe 25 is kept closed; when the softened water level in the soft water heat preservation box is lower than a set value, one side of the soft water supply pipe 24, which is close to the soft water supplementing pipe 25, and the soft water heating pipe 23 are enabled to pass through the water supplementing three-way valve 21, the water supplying three-way valve 22, the soft water heating pipe 23 and the high-temperature heat exchanger 12, and then the softened water in the water supplementing pipe flows into the soft water heat preservation water tank 2.
Embodiment 2 is shown in fig. 3, and the same parts as those of embodiment 1 are not repeated, but are different in that a boiler flue gas heat recovery system is further provided; the existing boiler mounted economizer 31 is already of standard configuration, and the boiler flue gas heat recovery system is established based on the existing standard configuration of the boiler.
The boiler flue gas heat recovery system comprises a fresh air preheating chamber, and a flue gas heat exchanger and an air preheating heat exchanger 34 which are sequentially arranged at a flue gas exhaust pipe 3 of the boiler from bottom to top, wherein an inlet of a water medium pipeline of the flue gas heat exchanger is connected with a soft water heat preservation water tank 2 through a pipeline, an outlet of the water medium pipeline of the flue gas heat exchanger is connected with a second water collector 51, the second water collector 51 is respectively connected with a high-temperature heat preservation water tank 5 and a heat-using heat exchanger unit, a water outlet end at a heat radiation side of the heat-using heat exchanger unit is connected with the soft water heat preservation water tank 2 through a pipeline, the heat-using heat exchanger unit comprises a life hot water heat exchanger unit, a building heating heat exchanger unit and a production heat exchanger unit, a heat absorption side pipeline of the production heat exchanger unit is connected with a heat exchange waterway of a production hot water tank 19 through a pipeline, and the water heated by the medium-temperature heat exchanger in the production hot water tank 19 is subjected to heat exchange and temperature rise again; the water medium pipeline of the air preheating heat exchanger 34 is connected with an air heating heat exchanger 4, the air heating heat exchanger 4 is arranged in a fresh air preheating chamber, the fresh air preheating chamber is connected with an air supply pipe 41, one end of the air supply pipe 41 is connected with an air collecting chamber 42 of the boiler, and one end of the air supply pipe 41, which is positioned in the fresh air preheating chamber, is provided with an air feeder.
The second water collector 51 is connected with the water inlet of the boiler economizer 31 through a boiler water supply pipe, an oxygen removal tank 35 is arranged on the boiler water supply pipe and used for removing oxygen in softened water, the flue gas heat exchanger comprises a primary heat exchanger 32 and a secondary heat exchanger 33 which are sequentially arranged along the flue gas discharging direction, the soft water heat preservation water tank 2 is connected with the water inlet end of the secondary heat exchanger 33 through a pipeline, the water outlet end of the secondary heat exchanger 33 is connected with the water inlet end of the primary heat exchanger 32, the water outlet end of the primary heat exchanger 32 is connected with the second water collector 51, and the primary heat exchanger 32 is close to the economizer 31.
The operation of the boiler flue gas heat recovery system is divided into two parts of softened water extraction heat energy recovery and boiler blast heat recovery, wherein the operation flow of softened water extraction heat energy recovery is as follows: the softened water with the temperature of 55 ℃ which is heated by the cascade cooling heat recovery system is conveyed to the secondary heat exchanger 33, and is subjected to heat exchange with the secondary high-temperature flue gas which is discharged after heat exchange by the primary heat exchanger 32, the softened water with the temperature which is heated enters the primary heat exchanger 32 and the high-temperature flue gas which is discharged by the economizer 31, is subjected to secondary temperature rise to 65-70 ℃, and enters the second water collector 51 after temperature rise to supply each heat unit or enter the high-temperature water storage tank for storage; the softened water after temperature rise is pumped to the deoxidizing tank 35, the water inlet temperature of the deoxidizing tank 35 is increased, deoxidizing is carried out by the deoxidizing tank 35, then the deoxidized softened water is conveyed to the economizer 31, the softened water is finally increased to 85-90 ℃ through heat exchange with high-temperature flue gas discharged by the boiler, and then the softened water is sent to the steam boiler, and the heat required for forming steam is reduced due to the multi-stage temperature increase of the water inlet temperature of the boiler, so that the steam production efficiency of the boiler is increased, and the fuel consumption is saved.
The operation flow of boiler blast heat recovery is as follows: the flue gas discharged by the boiler enters the air preheating heat exchanger 34 after heat exchange through the flue gas heat exchanger, meanwhile, low-temperature backwater after heat exchange with fresh air in the air heating heat exchanger 4 is pumped to the air preheating heat exchanger 34, the low-temperature backwater exchanges heat with the flue gas in the air preheating heat exchanger 34, the flue gas is discharged through the smoke exhaust pipe 3 after temperature reduction, the low-temperature backwater is heated and then enters the air heating heat exchanger 4 to exchange heat with fresh air, the heated fresh air is pressurized by a blower, and is sent to the air collecting chamber 42 through the air supply pipe 41, so that the preheated fresh air after heat recovery and temperature rise is provided for the blower, and the production efficiency of the boiler is improved.
The embodiment 3 is shown in fig. 4, and the same parts as those of the embodiment 1 and the embodiment 2 are not repeated, and the difference is that the warm cooling water supply pipe is also connected with a refrigeration auxiliary heat exchanger 17, the refrigeration auxiliary heat exchanger 17 is connected with a low-temperature heat exchanger in series, a heat absorption side pipeline of the refrigeration auxiliary heat exchanger 17 is connected with an auxiliary refrigeration and heating system, the auxiliary refrigeration and heating system comprises a heat pump unit 6, an energy storage tank 7 and a second cooling tower 8, chilled water prepared by the heat pump unit 6 is stored in the energy storage tank 7, the energy storage tank 7 is connected with a heat absorption side inlet of the refrigeration auxiliary heat exchanger 17 through the chilled water supply pipe, and a heat absorption side outlet of the refrigeration auxiliary heat exchanger 17 is connected to an evaporator side of the heat pump unit 6 through a pipeline; the water outlet end of the condenser 1 of the heat pump unit 6 is connected with a second cooling tower 8 through a heat pump water supply branch pipe 63, and the second cooling tower 8 is connected with the water inlet end of the condenser 1 of the heat pump unit 6 through a heat pump water return branch pipe 64.
The medium temperature cooling return pipe is also provided with a second medium temperature heat exchanger 14 which is connected with the first medium temperature heat exchanger 13 in parallel, the energy storage tank 7 is connected with the inlet of a heat absorption side pipeline of the second medium temperature heat exchanger 14 through a heat pump evaporation water supply pipe 65, the outlet of the heat absorption side pipeline of the second medium temperature heat exchanger 14 is connected with the water inlet of an evaporator of the heat pump unit 6 through a heat pump evaporation return pipe 66, and the water outlet of the evaporator is connected with the energy storage tank 7; the water outlet end of the condenser 1 of the heat pump unit 6 is connected with the second water collector 51 through a heat pump water supply main pipe 61, the water outlet end of the heat-dissipating side of the heat-using heat exchanger unit is also connected with the water inlet end of the condenser 1 of the heat pump unit 6 through a heat pump water return main pipe 62, and the high-temperature heat-preservation water tank 5 is communicated with the heat pump water return main pipe 62 through a water outlet branch pipe.
The low-temperature cooling water supply pipe is also provided with a first temperature sensor 171, the chilled water supply pipe is provided with a chilled water circulation pump 651 and a chilled water electric valve 172, the first temperature sensor 171 is electrically connected with a first controller, the output end of the first controller is respectively electrically connected with the chilled water circulation pump 651 and the chilled water electric valve 172, and the first controller is used for controlling the opening and closing of the chilled water electric valve 172 and the opening and closing of the chilled water circulation pump 651 according to signals input by the first temperature sensor 171.
The variable-frequency circulating pump can be selected as the chilled water circulating pump, and the valve is arranged in the variable-frequency circulating pump, so that the opening and closing of the chilled water circulating pump can be automatically controlled by the first controller, the opening and closing control of the chilled water pipeline of the refrigeration auxiliary heat exchanger 17 can be realized, and the opening and closing control of the chilled water electric valve is not needed.
The auxiliary refrigerating and heating system operates under two working conditions, and provides an auxiliary refrigerating and cooling function for the cascade cooling heat recovery system when the auxiliary refrigerating and heating system is in a high-temperature climate.
When the temperature of the low-temperature cooling water supply pipe is higher than the set value detected by the first temperature sensor, the temperature of the low-temperature cooling water supply pipe is 28 ℃, which indicates that the cooling water is cooled by the first cooling tower 11 in full-load operation and the cooling water is still not cooled by the low-temperature heat exchanger, the first controller controls the chilled water electric valve 172 and the chilled water circulating pump 651 to be opened, and simultaneously, the first controller controls the operating frequency of the chilled water circulating pump 651 in real time according to the temperature signal detected by the first temperature sensor 171 in real time, and sends the chilled water with the temperature of 7-12 ℃ in the energy storage tank 7 to the heat absorption side of the refrigeration auxiliary heat exchanger 17, so that the refrigeration auxiliary heat exchanger 17 is started, and the chilled water is further cooled to the set temperature and then returned to the condenser 1. When the temperature of the chilled water in the energy storage tank 7 reaches the set lower limit, the heat pump unit 6 is started to prepare the chilled water for the energy storage tank 7, and when the chilled water is prepared, if the high-temperature heat preservation water tank 5 needs to raise the temperature or preserve the heat, the circulation pipeline at the side of the heat pump condenser 1 passes through the heat pump water supply main pipe 61 and the heat pump water return main pipe 62, so that the condenser 1 of the heat pump unit 6 and the high-temperature heat preservation water tank 5 circulate, and the heat pump unit 6 provides high-temperature hot water for the high-temperature heat preservation water tank 5 when preparing the chilled water for the energy storage tank 7. When the high-temperature heat preservation water tank 5 does not need heat, the condenser 1 of the heat pump unit 6 and the second cooling tower 8 are cooled in a water circulation mode through the heat pump water supply branch pipe 63 and the heat pump water return branch pipe 64.
When in low-temperature climate, the refrigeration auxiliary heat exchanger 17 does not need chilled water auxiliary cooling, an auxiliary refrigeration and heating system operates auxiliary production and domestic heat preparation functions, the auxiliary refrigeration and heating system can provide heating and constant-temperature heat energy for the high-temperature heat preservation water tank 5, and the condenser 1 of the heat pump unit 6 and the high-temperature heat preservation water tank 5 are in water circulation through the heat pump water supply main pipe 61 and the heat pump water return main pipe 62; the second medium-temperature heat exchanger 14 and the energy storage tank 7 circulate with the evaporator water of the heat pump unit 6 through a heat pump evaporation water supply pipe 65 and a heat pump evaporation water return pipe 66. Cold water after the evaporator of the heat pump unit 6 absorbs heat and cools down is stored in the energy storage tank 7, water in the energy storage tank 7 is sent to the second medium-temperature heat exchanger 14 for heat exchange and temperature rise, medium-temperature heat of medium-temperature cooling water in the second medium-temperature heat exchanger 14 is obtained, the medium-temperature heat is sent back to the evaporator, the medium-temperature heat is converted into high-temperature heat through heat energy conversion of the heat pump unit 6 and released to the condenser 1 of the heat pump unit 6, and then the heat is sent to the high-temperature heat preservation water tank 5 for heat energy storage or heat energy supply through the heat pump water supply main pipe 61 and the heat pump water return main pipe 62. Therefore, the heat pump unit 6 has the characteristics of high efficiency and energy saving, and the temperature of cold water subjected to heat exchange and temperature rise with medium-temperature cooling water is higher than that of cold water in a natural environment and is stable, so that the energy efficiency of the heat pump unit 6 can reach 1:8, the heating cost is extremely low.
The high-grade heat obtained by the production cooling water heat recovery, the boiler flue gas heat recovery and the heat pump unit 6 is stored in the high-temperature heat preservation water tank 5, a large amount of heat energy can provide heat energy for life production, and the life hot water heat exchange unit can be externally connected with hot water pipes of a shower, a canteen, a bathroom, an office and a dormitory in a factory to provide life hot water requirements without extra energy consumption, energy conservation and emission reduction. The building heating heat exchange unit is externally connected with air conditioning heating facilities in areas such as factory office buildings, dormitories, packaging workshops and the like, reduces or avoids building heating energy consumption, saves energy and reduces emission. The production heat exchanger unit is used for raising the temperature of the secondary high-temperature water which is subjected to heat exchange by the first medium-temperature heat exchanger 13 and stored in the production hot water tank 19 again; therefore, when hot water in the hot water tank 19 for production needs to be heated and lifted to a higher temperature through the heating water tank, the heating load of the heating water tank is reduced by utilizing heat recovery, so that the production fuel consumption is saved, and the energy and the emission are reduced. The heat pump system is used for heating and recovering cold energy, and the evaporator of the heat pump unit 6 is connected with a cold water supply pipe and a cold water return pipe so as to supply cold for production and living, and can provide low-temperature water at 7 ℃ for areas such as office buildings, dormitories, packaging workshops and the like, and the requirements of building refrigeration and cold for production are provided, so that the refrigeration power consumption is reduced, the energy is saved and the emission is reduced.
The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (9)
1. A heat comprehensive utilization system of winery is characterized in that: comprises a cascade cooling heat recovery system; the cascade cooling heat recovery system comprises a condenser, a first cooling tower and a first water collector, wherein a water cavity and a heat exchange tube positioned in the water cavity are arranged in a condenser shell, a high-temperature cooling return pipe is arranged at the upper part of the water cavity, a medium-temperature cooling return pipe is arranged in the middle of the water tank, a low-temperature cooling water supply pipe is arranged at the bottom of the water cavity, the high-temperature cooling return pipe and the medium-temperature cooling return pipe are respectively connected with a high-temperature heat exchanger and a first medium-temperature heat exchanger, cooling water outlet pipes of the high-temperature heat exchanger and the first medium-temperature heat exchanger are connected with the first water collector, the first water collector is connected with the cooling tower, a water outlet end of the cooling tower is connected with the low-temperature heat exchanger, and the low-temperature heat exchanger is connected with the low-temperature cooling water supply pipe;
The low-temperature heat exchanger comprises a low-temperature preheating heat exchanger and a soft water preheating heat exchanger which are connected in parallel, wherein the heat absorption sides of the low-temperature preheating heat exchanger and the medium-temperature heat exchanger are connected in series through pipelines and then are connected with a hot water tank for production, the water inlet end of the heat absorption side of the low-temperature preheating heat exchanger is connected with a tap water production pipeline, tap water for production enters the hot water tank for production after being heated by the low-temperature preheating heat exchanger and the medium-temperature heat exchanger in sequence, and the hot water tank for production is connected with the inlet of the heat absorption side of the medium-temperature heat exchanger through a medium-temperature heat recovery return pipe; the heat absorption sides of the soft water preheating heat exchanger and the high-temperature heat exchanger are connected in series through pipelines, then the soft water heat preservation water tank is connected, the water inlet end of the hot side of the soft water preheating heat exchanger is connected with a normal-temperature soft water supplementing pipe, and the normal-temperature soft water is stored in the soft water heat preservation water tank after being heated by the soft water preheating heat exchanger and the high-temperature heat exchanger in sequence.
2. The winery heat integrated utilization system according to claim 1, wherein: the boiler flue gas heat recovery system comprises a fresh air preheating chamber, a flue gas heat exchanger and an air preheating heat exchanger, wherein the flue gas heat exchanger and the air preheating heat exchanger are arranged at a flue gas exhaust pipe of the boiler, an inlet of a water medium pipeline of the flue gas heat exchanger is connected with a soft water heat preservation water tank through a pipeline, an outlet of the water medium pipeline of the flue gas heat exchanger is connected with a second water collector, the second water collector is respectively connected with a high-temperature heat preservation water tank and a heat-using heat exchanger unit, a water outlet end at a heat radiation side of the heat-using heat exchanger unit is connected with the soft water heat preservation water tank through a pipeline, the heat-using heat exchanger unit comprises a heat-using heat exchanger unit for production, and a heat absorption side pipeline of the heat-using heat exchanger unit for production is connected with a hot water tank for production in series through a pipeline; the water medium pipeline of the air preheating heat exchanger is connected with an air heating heat exchanger, the air heating heat exchanger is arranged in the fresh air preheating chamber, the fresh air preheating chamber is connected with an air supply pipe, one end of the air supply pipe is connected with the air collecting chamber of the boiler, and one end of the air supply pipe, which is positioned in the fresh air preheating chamber, is provided with an air feeder.
3. The heat integrated utilization system of winery according to claim 2, wherein: the low-temperature cooling water supply pipe is also connected with a refrigeration auxiliary heat exchanger, the refrigeration auxiliary heat exchanger is connected with the low-temperature heat exchanger in series, a heat absorption side pipeline of the refrigeration auxiliary heat exchanger is connected with an auxiliary refrigeration and heating system, the auxiliary refrigeration and heating system comprises a heat pump unit, an energy storage tank and a second cooling tower, chilled water prepared by the heat pump unit is stored in the energy storage tank, the energy storage tank is connected with a heat absorption side inlet of the refrigeration auxiliary heat exchanger through the chilled water supply pipe, and a heat absorption side outlet of the refrigeration auxiliary heat exchanger is connected to an evaporator side of the heat pump unit through a pipeline; the water outlet end of the heat pump unit condenser is connected with a second cooling tower through a heat pump water supply branch pipe, and the second cooling tower is connected with the water inlet end of the heat pump unit condenser through a heat pump water return branch pipe.
4. A winery heat integrated utilization system according to claim 3, wherein: the medium-temperature cooling return pipe is also provided with a second medium-temperature heat exchanger which is connected with the first medium-temperature heat exchanger in parallel, the energy storage tank is connected with the inlet of a heat absorption side pipeline of the second medium-temperature heat exchanger through a heat pump evaporation water supply pipe, the outlet of the heat absorption side pipeline of the second medium-temperature heat exchanger is connected with the water inlet of an evaporator of the heat pump unit through a heat pump evaporation return pipe, and the water outlet of the evaporator is connected with the energy storage tank; the water outlet end of the heat pump unit condenser is connected with the second water collector through a heat pump water supply main pipe, and the water outlet end of the heat exchange unit heat radiation side is also connected with the water inlet end of the heat pump unit condenser through a heat pump water return main pipe.
5. A winery heat integrated utilization system according to claim 3, wherein: the low-temperature cooling water supply pipe is further provided with a first temperature sensor, the chilled water supply pipe is provided with a chilled water circulating pump, the first temperature sensor is electrically connected with a first controller, the output end of the first controller is electrically connected with the chilled water circulating pump respectively, and the first controller is used for controlling the frequency of the chilled water circulating pump according to signals input by the first temperature sensor.
6. The winery heat integrated utilization system according to claim 1, wherein: the one side that the high temperature cooling wet return is close to the condenser is equipped with second temperature sensor and high temperature cooling motorised valve, and second temperature sensor electricity is connected with the temperature control table, and the temperature control table electricity is connected with the relay, and the relay is connected with high temperature cooling motorised valve electricity, and the temperature control table is used for controlling relay switching and then control high temperature cooling motorised valve switching according to second temperature sensor's signal.
7. The heat integrated utilization system of winery according to claim 2, wherein: the second water collector is connected with a water inlet of a boiler through a boiler water supply pipe, and an deoxidization tank is arranged on the boiler water supply pipe.
8. The heat integrated utilization system of winery according to claim 2, wherein: the flue gas heat exchanger comprises a primary heat exchanger and a secondary heat exchanger which are sequentially arranged along the flue gas discharge direction, the soft water heat preservation water tank is connected with the water inlet end of the secondary heat exchanger through a pipeline, the water outlet end of the secondary heat exchanger is connected with the water inlet end of the primary heat exchanger, and the water outlet end of the primary heat exchanger is connected with the second water collector.
9. The heat integrated utilization system of winery according to claim 2, wherein: the water outlet end of the first cooling tower is provided with a third temperature sensor, the third temperature sensor is electrically connected with a second controller, the output end of the second controller is electrically connected with a cooling fan and a spray pump of the cooling tower respectively, and the second controller is used for controlling the frequencies of the cooling fan and the spray pump according to signals of the third temperature sensor.
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| CN202323659926.5U CN222069341U (en) | 2023-12-29 | 2023-12-29 | A comprehensive heat utilization system for winery |
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