CN111747464A - Waste heat recovery device and distilled water production system - Google Patents
Waste heat recovery device and distilled water production system Download PDFInfo
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- CN111747464A CN111747464A CN202010572590.0A CN202010572590A CN111747464A CN 111747464 A CN111747464 A CN 111747464A CN 202010572590 A CN202010572590 A CN 202010572590A CN 111747464 A CN111747464 A CN 111747464A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
Abstract
The invention relates to a waste heat recovery device and a distilled water production system. The first type heat exchange cavity inlet of the first type heat exchanger is used for introducing the discharge of the distilled water machine, and the first type heat exchange cavity outlet of the first type heat exchanger is used for discharging the discharge. The inlet of the second type heat exchange cavity of the first type heat exchanger is communicated with the raw material water inlet, and the inlet of the first type heat exchange cavity of the second type heat exchanger is communicated with the outlet of the second type heat exchange cavity of the first type heat exchanger. And the outlet of the first type heat exchange cavity of the second type heat exchanger is communicated with the distilled water machine. The waste heat recovery device realizes the effect of cooling the injection water without externally connecting cooling water, is favorable for saving water resources, fully recycles heat energy, is favorable for energy conservation and emission reduction, and reduces the production cost.
Description
Technical Field
The invention relates to the technical field of distillation, in particular to a waste heat recovery device and a distilled water production system.
Background
The distilled water production system comprises a distilled water machine. The distilled water machine refers to a machine for preparing pure water by a distillation method. When the distilled water production system operates, the distilled water machine can generate industrial steam condensate (about 143 ℃), concentrated water (about 101 ℃) and steam containing non-condensable gas (about 101 ℃), and the emissions can be directly discharged, so that heat energy is wasted and the operating cost is increased. The high-temperature injection water (about 101 ℃) generated by the distilled water production system also needs cooling water outside the system to cool until the injection water is cooled to 75 ℃ to 85 ℃, so that heat energy is wasted, the cooling water is consumed, and the production cost is increased.
Disclosure of Invention
Therefore, the waste heat recovery device and the distilled water production system are needed to solve the technical problems, the waste heat recovery device can recycle heat, energy conservation and emission reduction are facilitated, injection water can be cooled on the premise that cooling water is not used, and production benefits are improved.
A waste heat recovery device for connecting a water distiller, the waste heat recovery device comprising:
the first type heat exchange cavity inlet of the first type heat exchanger is used for introducing the discharge of the distilled water machine, and the first type heat exchange cavity outlet of the first type heat exchanger is used for discharging the discharge; the inlet of the second type heat exchange cavity of the first type heat exchanger is communicated with a raw material water inlet;
the inlet of a first type heat exchange cavity of the second type heat exchanger is communicated with the outlet of a second type heat exchange cavity of the first type heat exchanger, and the outlet of the first type heat exchange cavity of the second type heat exchanger is communicated with the distilled water machine; and the inlet of a second type heat exchange cavity of the second type heat exchanger is communicated with the injection water buffer tank, and the outlet of the second type heat exchange cavity of the second type heat exchanger is used for discharging the injection water.
The technical solution is further explained below:
in one embodiment, the first heat exchanger includes a first heat exchanger, a second heat exchanger and a third heat exchanger, and the second type heat exchange cavity of the first heat exchanger, the second type heat exchange cavity of the second heat exchanger and the second type heat exchange cavity of the third heat exchanger are connected in series for circulating raw water.
In one embodiment, the inlet of the first type heat exchange cavity of the first heat exchanger is used for introducing steam containing non-condensable gas, and the outlet of the first type heat exchange cavity of the first heat exchanger is communicated with the first outlet; an inlet of a first type heat exchange cavity of the second heat exchanger is communicated with an industrial steam condensed water inlet, and an outlet of the first type heat exchange cavity of the second heat exchanger is communicated with a second outlet; and the inlet of the first type heat exchange cavity of the third heat exchanger is communicated with the concentrated water inlet, and the outlet of the first type heat exchange cavity of the third heat exchanger is communicated with the third outlet.
In one embodiment, the outlet of the second type heat exchange cavity of the first type heat exchanger is communicated with a raw water outlet through a first pipeline, and the raw water outlet is used for being communicated with the distilled water machine; an outlet of the second type heat exchange cavity of the first type heat exchanger is communicated with an inlet of the first type heat exchange cavity of the second type heat exchanger through a second pipeline; and the first pipeline is provided with a regulating diaphragm valve for regulating the flow of the raw material water flowing through the first pipeline.
In one embodiment, the waste heat recovery device further comprises a temperature sensor and a control module electrically connected with the temperature sensor, wherein the temperature sensor is electrically connected with the second type heat exchanger; the control module is electrically connected to the adjusting diaphragm valve and used for adjusting the opening degree of the adjusting diaphragm valve. The adjusting diaphragm valve is a PID adjusting valve.
In one embodiment, the waste heat recovery device further comprises a third heat exchanger, the third heat exchanger is arranged on the first pipeline, a first type heat exchange cavity outlet of the second heat exchanger and a second type heat exchange cavity outlet of the first heat exchanger are both communicated with a second type heat exchange cavity inlet of the third heat exchanger, and a second type heat exchange cavity outlet of the third heat exchanger is communicated with the raw material water outlet.
In one embodiment, the first type heat exchange cavity inlet of the third type heat exchanger is communicated with the industrial steam inlet, and the first type heat exchange cavity outlet of the third type heat exchanger is communicated with the industrial steam outlet.
In one embodiment, the injection water buffer tank is communicated with the inlet of the second type heat exchange cavity of the second type heat exchanger through a third pipeline, and a centrifugal pump is arranged on the third pipeline.
In one embodiment, the first type heat exchanger, the second type heat exchanger and the third type heat exchanger are all shell-and-tube heat exchangers, the first type heat exchange cavity is a shell pass of the shell-and-tube heat exchanger, and the second type heat exchange cavity is a tube pass of the shell-and-tube heat exchanger.
A distilled water production system comprises a distilled water machine and the waste heat recovery device in any embodiment, wherein the distilled water machine comprises a distiller and an exhauster connected with the distiller, the inlet of a first type heat exchange cavity of a first type heat exchanger is communicated with the exhauster, and the raw water outlet of the waste heat recovery device is communicated with the distiller.
Above-mentioned waste heat recovery device and distilled water production system have following beneficial effect at least:
the waste heat recovery device provided by the embodiment comprises a first type heat exchanger and a second type heat exchanger, wherein the first type heat exchange cavity inlet of the first type heat exchanger is communicated with the discharge of the distilled water machine, and the first type heat exchange cavity outlet of the first type heat exchanger discharges the discharge. The inlet of the second type heat exchange cavity of the first type heat exchanger is communicated with the raw material water inlet. The temperature of the discharge of the distilled water machine is higher, and the temperature of the raw material water in the second type heat exchange cavity of the first type heat exchanger is lower. The heating of the raw water comprises a first stage and a second stage: in the first stage, the discharge in the first type heat exchange cavity of the first type heat exchanger heats the raw material water in the second type heat exchange cavity of the first type heat exchanger, so that the raw material water is heated; in the second stage, when the heated raw water passes through the first type heat exchange cavity of the second type heat exchanger, the injection water in the second type heat exchange cavity of the second type heat exchanger heats the raw water again, so that the raw water is further heated. In the second stage, the raw material water absorbs the heat of the injection water, so that the temperature of the injection water is reduced, then the injection water with lower temperature is discharged from the outlet of the second type heat exchange cavity of the second type heat exchanger, and the heated raw material water finally enters the distilled water machine for distillation, so that the raw material water can reach the distillation temperature more easily. So, this waste heat recovery device has realized not needing external cooling water, just can cool off the effect of injection water, is favorable to the water economy resource, improves the productivity effect. The waste heat recovery device fully recycles the heat energy of the distilled water machine emission and the injection water, heats the raw material water, cools the injection water, and is beneficial to energy conservation, emission reduction and production cost reduction.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a distilled water production system provided in accordance with an embodiment of the present invention;
fig. 2 is a schematic diagram of a waste heat recovery device according to an embodiment of the present invention.
Description of reference numerals: 100. a waste heat recovery device; 110. a first type of heat exchanger; 111. a first heat exchanger; 112. a second heat exchanger; 113. a third heat exchanger; 120. a second type of heat exchanger; 130. a third type of heat exchanger; 140. a buffer tank for water for injection; 151. a first conduit; 1511. adjusting the diaphragm valve; 152. a second conduit; 153. a third pipeline; 1533. a centrifugal pump; 200. a water distiller; A. a first inlet; E. a first outlet; B. a second inlet; F. a second outlet; C. a third inlet; G. a third outlet; D. a raw material water inlet; H. a raw material water outlet; J. an industrial steam inlet; K. an industrial steam outlet; I. and (5) an injection water outlet.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
The embodiment provides a waste heat recovery device 100 and a distilled water production system, which have the advantages of realizing heat recovery and utilization, saving energy and reducing emission, and also can cool injection water on the premise of not using cooling water to improve production benefits, and will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, in one embodiment, the horizontal and vertical lines with arrows represent ducts. FIG. 1 illustrates a schematic diagram of a distilled water production system provided by an embodiment of the present invention; fig. 2 shows a schematic diagram of a waste heat recovery device according to an embodiment of the present invention. A waste heat recovery device 100 is used for being communicated with a distilled water machine 200, and the waste heat recovery device 100 comprises a first type heat exchanger 110 and a second type heat exchanger 120. The first type heat exchange cavity inlet of the first type heat exchanger 110 is used for introducing the discharge of the distilled water machine 200, and the first type heat exchange cavity outlet of the first type heat exchanger 110 is used for discharging the discharge. The inlet of the second type heat exchange cavity of the first type heat exchanger 110 is communicated with the raw material water inlet D, and the inlet of the first type heat exchange cavity of the second type heat exchanger 120 is communicated with the outlet of the second type heat exchange cavity of the first type heat exchanger 110. The outlet of the first type heat exchange cavity of the second type heat exchanger 120 is used for communicating with the distilled water machine 200. The inlet of the second type heat exchange cavity of the second type heat exchanger 120 is communicated with the injection water buffer tank 140, and the outlet of the second type heat exchange cavity of the second type heat exchanger 120 is used for discharging the injection water. The first type heat exchanger 110 and the second type heat exchanger 120 are both shell-and-tube heat exchangers, the first type heat exchange cavity is a shell pass of the shell-and-tube heat exchanger, and the second type heat exchange cavity is a tube pass of the shell-and-tube heat exchanger.
The waste heat recovery device 100 provided by the embodiment comprises a first-type heat exchanger 110 and a second-type heat exchanger 120, wherein the first-type heat exchange cavity inlet of the first-type heat exchanger 110 is introduced into the discharge of the distilled water machine 200, and the first-type heat exchange cavity outlet of the first-type heat exchanger 110 discharges the discharge. The inlet of the second type heat exchange cavity of the first type heat exchanger 110 is communicated with the raw material water inlet D. Wherein the temperature of the discharge of the distilled water machine 200 is higher, and the temperature of the raw water in the second type heat exchange cavity of the first type heat exchanger 110 is lower. The heating of the raw water comprises a first stage and a second stage: in the first stage, the discharge in the first type heat exchange cavity of the first type heat exchanger 110 heats the raw water in the second type heat exchange cavity of the first type heat exchanger 110, so that the raw water is heated; in the second stage, when the heated raw material water passes through the first type heat exchange cavity of the second type heat exchanger 120, the injection water in the second type heat exchange cavity of the second type heat exchanger 120 heats the raw material water again, so that the raw material water is further heated. In the second stage, the raw material water absorbs the heat of the injection water, so that the temperature of the injection water is reduced, and since the outlet of the second type heat exchange cavity of the second type heat exchanger 120 is communicated with the outlet I of the injection water through a pipeline, the injection water with the reduced temperature is discharged from the outlet of the second type heat exchange cavity of the second type heat exchanger 120 through the outlet I of the injection water. The raw water heated in the second stage is finally introduced into the water distiller 200 to be distilled. Thus, the waste heat recovery device 100 achieves the effect of cooling the injection water without externally connecting cooling water, and is beneficial to saving water resources and improving production benefits. The waste heat recovery device 100 fully recycles the heat energy of the water distiller 200 discharge and the injection water, heats the raw material water, cools the injection water, is also beneficial to energy conservation and emission reduction, and reduces the production cost.
In one embodiment, referring to fig. 1 and 2, the first type of heat exchanger 110 includes a first heat exchanger 111, a second heat exchanger 112, and a third heat exchanger 113. The second type heat exchange cavity of the first heat exchanger 111, the second type heat exchange cavity of the second heat exchanger 112 and the second type heat exchange cavity of the third heat exchanger 113 are serially connected for circulating the raw water.
In an embodiment, referring to fig. 1 and fig. 2, an inlet of the first type heat exchange cavity of the first heat exchanger 111 is used for introducing steam containing non-condensable gas, and an outlet of the first type heat exchange cavity of the first heat exchanger 111 is communicated with the first outlet E. The first type heat exchange cavity inlet of the second heat exchanger 112 is communicated with the industrial steam condensed water inlet. The first type heat exchange cavity outlet of the second heat exchanger 112 is communicated with the second outlet F. The inlet of the first type heat exchange cavity of the third heat exchanger 113 is communicated with the concentrated water inlet. The outlet of the first type heat exchange cavity of the third heat exchanger 113 is communicated with the third outlet G. Specifically, when the water distiller 200 is in operation, the effluent generated by the water distiller 200 is high-temperature industrial steam condensate (about 143 degrees celsius), condensed water (about 101 degrees celsius), and steam containing non-condensable gases (about 101 degrees celsius). The inlet of the first type heat exchange cavity of the first heat exchanger 111 is communicated with the first inlet A through a pipeline, steam containing non-condensable gas is introduced into the first inlet A, the steam containing the non-condensable gas forms steam condensate after being absorbed by raw material water in the second type heat exchange cavity of the first heat exchanger 111, and the steam condensate is discharged from the first outlet E. An inlet of the first type heat exchange cavity of the second heat exchanger 112 is communicated with a second inlet B through a pipeline, industrial steam condensate is introduced into the second inlet B, and the industrial steam condensate is discharged from a second outlet F after being absorbed by raw material water in the second type heat exchange cavity of the second heat exchanger 112. An inlet of the first type heat exchange cavity of the third heat exchanger 113 is communicated with a third inlet C through a pipeline, concentrated water is introduced into the third inlet C, and the concentrated water is discharged from a third outlet G after being absorbed by raw material water in the second type heat exchange cavity of the third heat exchanger 113. Further, when the industrial steam condensate, the concentrated water and the steam containing the non-condensable gas are discharged from respective outlets, the temperature is reduced to be lower than 40 ℃, namely, the raw material water in the first heat exchanger 111, the second heat exchanger 112 and the third heat exchanger 113 fully absorbs the heat of the discharge of the distilled water machine 200, and the raw material water is heated and then enters the distilled water machine 200 for distillation, so that the distillation temperature of the raw material water can be reached more quickly, and the distillation efficiency is improved. It is understood that the second type heat exchanger 120 is also composed of a plurality of heat exchangers, and is not particularly limited herein.
In one embodiment, referring to fig. 1 and fig. 2, both ends of the second type heat exchange cavity of the first heat exchanger 111 are respectively communicated with the second type heat exchange cavity of the second heat exchanger 112 and the second type heat exchange cavity of the third heat exchanger 113 through pipes. Or, both ends of the second type heat exchange cavity of the second heat exchanger 112 are respectively communicated with the second type heat exchange cavity of the first heat exchanger 111 and the second type heat exchange cavity of the third heat exchanger 113 through pipelines. Or, both ends of the second type heat exchange cavity of the third heat exchanger 113 are respectively communicated with the second type heat exchange cavity of the first heat exchanger 111 and the second type heat exchange cavity of the second heat exchanger 112 through pipelines. That is, the first heat exchanger 111, the second heat exchanger 112 and the third heat exchanger 113 are connected in series, but the specific sequence of the three can be adjusted at will, as long as the second type heat exchange chamber of the three is ensured to be connected, the raw material water inlet D is communicated with the second type heat exchange chamber of the three through a pipeline, and the raw material water can smoothly flow to the first type heat exchange chamber of the second type heat exchanger 120 in the second type heat exchange chamber of the three.
In one embodiment, referring to fig. 1 and 2, the outlet of the second type heat exchange chamber of the first type heat exchanger 110 is connected to the raw water outlet H through a first conduit 151. The raw material water outlet H is used for being communicated with the distilled water machine 200. The second-type heat exchange cavity outlet of the first-type heat exchanger 110 is communicated with the first-type heat exchange cavity inlet of the second-type heat exchanger 120 through a second pipeline 152. The first pipe 151 is provided with a regulating diaphragm valve 1511 for regulating the flow rate of the raw material water flowing through the first pipe 151. Specifically, the second type heat exchange cavities of the first heat exchanger 111, the second heat exchanger 112, and the third heat exchanger 113 are sequentially connected in series for specific description: the outlet of the second-type heat exchange cavity of the third heat exchanger 113 is the outlet of the second-type heat exchange cavity of the first heat exchanger 110, raw material water flowing out of the outlet of the second-type heat exchange cavity of the third heat exchanger 113 can flow into the first pipeline 151 and the second pipeline 152, the raw material water can flow into the distilled water machine 200 through the first pipeline 151 for distillation, and the raw material water can also flow into the distilled water machine 200 through the second pipeline 152 and the first-type heat exchange cavity of the second heat exchanger 120 in sequence for distillation. When the raw material water is in the first type heat exchange cavity of the second type heat exchanger 120, the heat of the injection water in the second type heat exchange cavity of the second type heat exchanger 120 can be absorbed, the raw material water is heated, and the injection water is cooled. The temperature of the water for injection is decreased in relation to the flow rate of the raw material water in the second pipe 152, and when the temperature of the water for injection is desired to be decreased to a large value, the diaphragm valve 1511 is controlled and adjusted so that the flow rate of the raw material water in the first pipe 151 is decreased and the raw material water in the second pipe 152 is increased accordingly, thereby absorbing more heat of the water for injection. Similarly, when the temperature of the injection water is expected to decrease to a smaller value, the diaphragm valve 1511 is controlled and adjusted so that the flow rate of the raw water in the first pipe 151 increases and the flow rate of the raw water in the second pipe 152 decreases, thereby reducing the absorption of heat of the injection water.
Further, referring to fig. 1 and fig. 2, the waste heat recovery device 100 further includes a temperature sensor (not shown) and a control module (not shown) electrically connected to the temperature sensor. The temperature sensor is electrically connected to the second type heat exchanger 120, and is configured to measure the temperature of the injection water flowing out of the first type heat exchange cavity of the second type heat exchanger 120. The control module is electrically connected to the adjusting diaphragm valve 1511, and is used for adjusting the opening degree of the adjusting diaphragm valve 1511. Specifically, the temperature sensor obtains the temperature value of the water for injection, the temperature sensor feeds the temperature value back to the control module, the control module judges that the diaphragm valve 1511 is controlled and adjusted to reduce the opening degree if the temperature value is higher than the discharge standard (for example, the water for injection needs to be cooled to 75 ℃ to 85 ℃ to be discharged), so that the flow of the raw material water in the second pipeline 152 is increased until the temperature value of the water for injection meets the discharge standard. Wherein, the adjusting diaphragm valve 1511 can adopt a PID adjusting valve. A pid (process identifier) regulator valve is an industrial process control instrument.
In one embodiment, referring to fig. 1 and 2, the waste heat recovery device 100 further includes a third type heat exchanger 130. The third type heat exchanger 130 may be a shell-and-tube heat exchanger, where the first type heat exchange cavity is a shell pass of the shell-and-tube heat exchanger, and the second type heat exchange cavity is a tube pass of the shell-and-tube heat exchanger. The third type heat exchanger 130 is provided on the first pipe 151. And the outlet of the first type heat exchange cavity of the second type heat exchanger 120 and the outlet of the second type heat exchange cavity of the first type heat exchanger 110 are both communicated with the inlet of the second type heat exchange cavity of the third type heat exchanger 130. The outlet of the second type heat exchange cavity of the third type heat exchanger 130 is communicated with the raw water outlet H. Specifically, the outlet of the first type heat exchange cavity of the second type heat exchanger 120 and the outlet of the second type heat exchange cavity of the first type heat exchanger 110 are respectively communicated with the inlet of the second type heat exchange cavity of the third type heat exchanger 130 through a pipeline, and the outlet of the second type heat exchange cavity of the third type heat exchanger 130 is further communicated with the raw material water outlet H. That is, the second heat exchanger 120 and the first heat exchanger 110 can be communicated with the distilled water machine 200 through the third heat exchanger 130, and the raw water flowing out of the first heat exchanger 110 and the second heat exchanger 120 needs to be collected into the second heat exchange cavity of the third heat exchanger 130, and then flows into the distilled water machine 200 from the third heat exchanger 130 for distillation. Further, the inlet of the first type heat exchange cavity of the third type heat exchanger 130 is communicated with the industrial steam inlet J, and the outlet of the first type heat exchange cavity of the third type heat exchanger 130 is communicated with the industrial steam outlet K. The industrial steam is high-temperature steam with the temperature higher than 100 ℃ and is high-temperature waste gas generated in other industrial production processes. The industrial steam enters the first type heat exchange cavity of the third type heat exchanger 130 from the industrial steam inlet J and is used for heating raw material water in the second type heat exchange cavity of the third type heat exchanger 130, so that the temperature of the raw material water is further raised, the raw material water can reach the distillation temperature after entering the water distiller 200 more easily, the distillation efficiency is favorably improved, the heat of the industrial steam is effectively utilized, the energy waste is avoided, the energy conservation and emission reduction are realized, and the production cost is reduced.
In one embodiment, referring to fig. 1 and 2, the injection water buffer tank 140 is communicated with the second type heat exchange cavity inlet of the second type heat exchanger 120 through a third pipe 153, and a centrifugal pump 1533 is disposed on the third pipe 153. Specifically, the third pipe 153 is used for introducing the injection water in the injection water buffer tank 140 into the second type heat exchange cavity of the second type heat exchanger 120, and the centrifugal pump 1533 is used for pressurizing the injection water, so as to improve the transportation efficiency of the injection water.
In one embodiment, referring to fig. 1 and 2, a distilled water production system includes a distilled water machine 200 and a waste heat recovery device 100 as described in any of the above embodiments. The water distiller 200 includes a distiller (not shown) and a discharger (not shown) connected to the distiller. The first type heat exchange cavity inlet of the first type heat exchanger 110 is communicated with an exhauster, and the exhauster is used for exhausting the exhaust of the distilled water machine 200. The raw material water outlet H of the waste heat recovery device 100 is communicated with a distiller, and the distiller is used for distilling raw material water. Since the distilled water production system includes the waste heat recovery device 100, the technical effects are brought by the waste heat recovery device 100, and the beneficial effects already include the beneficial effects of the waste heat recovery device 100, so that the detailed description is omitted here.
In the waste heat recovery device 100 provided in this embodiment, the raw material water may be heated three times in the first type heat exchanger 110, the second type heat exchanger 120, and the third type heat exchanger 130. The effluent from the first type heat exchange chamber heats the feed water in the second type heat exchange chamber of the first type heat exchanger 110, causing the feed water to rise in temperature for the first time. When the heated raw material water passes through the first type heat exchange cavity of the second type heat exchanger 120, the injection water in the second type heat exchange cavity of the second type heat exchanger 120 heats the raw material water again, so that the raw material water is heated for the second time. In the second type heat exchanger 120, the raw water absorbs heat of the injection water, so that the temperature of the injection water is lowered, and then the injection water having a lower temperature is discharged from the second type heat exchange chamber outlet of the second type heat exchanger 120. The raw water enters the third heat exchanger 130, and the industrial steam in the first heat exchange cavity of the third heat exchanger 130 heats the raw water for the third time. The raw water heated for three times is distilled in the water distiller 200, so that the raw water can reach the distillation temperature more easily. The waste heat recovery device 100 achieves the effect of cooling injection water without external cooling water, is favorable for saving water resources, and improves production benefits. The waste heat recovery device 100 fully recycles the heat energy of the water distiller 200 discharge and the injection water, heats the raw material water, cools the injection water, is also beneficial to energy conservation and emission reduction, and reduces the production cost.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Claims (10)
1. A waste heat recovery device, characterized in that the waste heat recovery device comprises:
the first type heat exchange cavity inlet of the first type heat exchanger is used for introducing the discharge of the distilled water machine, and the first type heat exchange cavity outlet of the first type heat exchanger is used for discharging the discharge; the inlet of the second type heat exchange cavity of the first type heat exchanger is communicated with a raw material water inlet;
the inlet of a first type heat exchange cavity of the second type heat exchanger is communicated with the outlet of a second type heat exchange cavity of the first type heat exchanger, and the outlet of the first type heat exchange cavity of the second type heat exchanger is communicated with the distilled water machine; and the inlet of a second type heat exchange cavity of the second type heat exchanger is communicated with the injection water buffer tank, and the outlet of the second type heat exchange cavity of the second type heat exchanger is used for discharging the injection water.
2. The waste heat recovery device of claim 1, wherein the first heat exchanger comprises a first heat exchanger, a second heat exchanger and a third heat exchanger, and the second heat exchange cavity of the first heat exchanger, the second heat exchange cavity of the second heat exchanger and the second heat exchange cavity of the third heat exchanger are connected in series for circulating raw water.
3. The waste heat recovery device according to claim 2, wherein a first type heat exchange cavity inlet of the first heat exchanger is used for introducing steam containing non-condensable gas, and a first type heat exchange cavity outlet of the first heat exchanger is communicated with a first outlet; an inlet of a first type heat exchange cavity of the second heat exchanger is communicated with an industrial steam condensed water inlet, and an outlet of the first type heat exchange cavity of the second heat exchanger is communicated with a second outlet; and the inlet of the first type heat exchange cavity of the third heat exchanger is communicated with the concentrated water inlet, and the outlet of the first type heat exchange cavity of the third heat exchanger is communicated with the third outlet.
4. The waste heat recovery device according to any one of claims 1 to 3, wherein the outlet of the second type heat exchange cavity of the first type heat exchanger is communicated with a raw water outlet through a first pipeline, and the raw water outlet is used for being communicated with the distilled water machine; an outlet of the second type heat exchange cavity of the first type heat exchanger is communicated with an inlet of the first type heat exchange cavity of the second type heat exchanger through a second pipeline; and the first pipeline is provided with a regulating diaphragm valve for regulating the flow of the raw material water flowing through the first pipeline.
5. The waste heat recovery device of claim 4, further comprising a temperature sensor and a control module electrically connected to the temperature sensor, wherein the temperature sensor is electrically connected to the second type heat exchanger; the control module is electrically connected to the adjusting diaphragm valve and used for adjusting the opening degree of the adjusting diaphragm valve.
6. The waste heat recovery device according to claim 4, further comprising a third heat exchanger, wherein the third heat exchanger is disposed on the first pipeline, the first type heat exchange cavity outlet of the second heat exchanger and the second type heat exchange cavity outlet of the first heat exchanger are both communicated with the second type heat exchange cavity inlet of the third heat exchanger, and the second type heat exchange cavity outlet of the third heat exchanger is communicated with the raw material water outlet.
7. The waste heat recovery device of claim 6, wherein the inlet of the first type heat exchange cavity of the third type heat exchanger is communicated with an industrial steam inlet, and the outlet of the first type heat exchange cavity of the third type heat exchanger is communicated with an industrial steam outlet.
8. The waste heat recovery device of claim 7, wherein the first type heat exchanger, the second type heat exchanger and the third type heat exchanger are all shell-and-tube heat exchangers, the first type heat exchange cavity is a shell side of the shell-and-tube heat exchanger, and the second type heat exchange cavity is a tube side of the shell-and-tube heat exchanger.
9. The waste heat recovery device as claimed in any one of claims 1 to 3, wherein the injection water buffer tank is communicated with the inlet of the second type heat exchange cavity of the second type heat exchanger through a third pipeline, and a centrifugal pump is arranged on the third pipeline.
10. A distilled water production system, comprising a distilled water machine and the waste heat recovery device of any one of claims 1 to 9, wherein the distilled water machine comprises a distiller and an exhauster connected with the distiller, the inlet of the first type heat exchange cavity of the first type heat exchanger is communicated with the exhauster, and the raw water outlet of the waste heat recovery device is communicated with the distiller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010572590.0A CN111747464A (en) | 2020-06-22 | 2020-06-22 | Waste heat recovery device and distilled water production system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010572590.0A CN111747464A (en) | 2020-06-22 | 2020-06-22 | Waste heat recovery device and distilled water production system |
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| CN111747464A true CN111747464A (en) | 2020-10-09 |
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| CN202010572590.0A Pending CN111747464A (en) | 2020-06-22 | 2020-06-22 | Waste heat recovery device and distilled water production system |
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| CN (1) | CN111747464A (en) |
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2020
- 2020-06-22 CN CN202010572590.0A patent/CN111747464A/en active Pending
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