Steam secondary utilization system

Abstract

The utility model provides a steam secondary utilization system and relates to the technical field of fermentation production of long carbon chain dibasic acid. The steam secondary utilization system comprises a plurality of reaction devices, an absorption device and a storage device, each reaction device is provided with a steam discharge outlet, the absorption device is provided with a steam inlet communicated with the steam discharge outlets and a liquid inlet and a liquid outlet which are communicated with each other, a heat exchange piece connected with the steam inlet is arranged in the absorption device, and the liquid inlet and the liquid outlet are communicated with each other. The heat exchange piece is arranged on a communication path of the liquid inlet and the liquid outlet, an inlet of the storage device communicates with the liquid outlet, and an outlet of the storage device communicates with the liquid inlet and is used for communicating with the heat exchange device. Through the arrangement, waste heat steam of a plurality of reaction devices can be fully utilized for heat exchange, so that the purpose of heat energy conversion and reutilization is achieved, resources are saved, and meanwhile, the situation that the waste heat steam of the plurality of reaction devices is directly discharged into the air to damage the environment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of long-carbon-chain dibasic acid fermentation production, in particular to a steam secondary utilization system. Background Art

[0002] Long-chain dibasic acids refer to aliphatic dicarboxylic acids with 10 or more carbon atoms in the carbon chain, including saturated and unsaturated dicarboxylic acids. They are a class of fine chemical products with important and extensive industrial uses. They are important raw materials in the chemical industry for synthesizing high-end fragrances, high-performance engineering plastics, high-temperature electrolytes, high-end hot melt adhesives, cold-resistant plasticizers, high-end lubricants, high-end paints and coatings.

[0003] The production of long-chain dibasic acids by biofermentation is an application of microbial fermentation technology in the field of petrochemicals that emerged in the 1970s. It uses petroleum byproduct wax oil as raw material, has the advantages of wide raw material sources, simple production process, and mild production conditions, and has received widespread attention at home and abroad. At present, many companies use fermentation tanks, feed tanks and other reaction devices in the process of producing long-chain dibasic acids by biofermentation. During the use of these reaction devices, they must be steam sterilized from time to time. Generally, steam is passed into the interior of the reaction device, and the high temperature of the steam is used to disinfect and sterilize the reaction device. The waste heat steam discharged from these reaction devices is directly discharged to the atmosphere. The temperature of this part of the waste heat steam is still relatively high, and it has the value of heat energy recovery and utilization. Direct discharge to the atmosphere cannot achieve steam recovery and reuse, which not only causes energy waste, but also damages the environment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a steam secondary utilization system in order to overcome the defects in the prior art that waste heat steam discharged from multiple reaction devices is directly discharged into the atmosphere, which causes energy waste and damages the environment.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A steam secondary utilization system, characterized in that the steam secondary utilization system comprises:

[0007] A plurality of reaction devices, each of which is provided with a steam discharge port;

[0008] An absorption device, wherein the absorption device is provided with a steam inlet connected to the steam discharge port and a liquid inlet and a liquid outlet connected to each other, and a heat exchange element connected to the steam inlet is provided inside the absorption device, and the heat exchange element is provided on the communication path between the liquid inlet and the liquid outlet;

[0009] A storage device is provided with an inlet and an outlet, the inlet of the storage device is connected to the liquid outlet, the outlet of the storage device is connected to the liquid inlet and is also used to connect to a heating device.

[0010] In the present scheme, when high-temperature steam sterilization is performed on multiple reaction devices, the waste heat steam can be discharged through the steam exhaust ports of the multiple reaction devices, and then enter the interior of the absorption device through the steam inlet of the absorption device. The heat exchange component connected to the steam inlet is used to exchange heat with the liquid on the communication path between the liquid inlet and the liquid outlet. The liquid absorbs the heat of the waste heat steam and is heated and then discharged from the liquid outlet. The liquid after heat exchange is stored by setting a special storage device, and the liquid after heat exchange is repeatedly heat exchanged as needed, or the liquid after heat exchange is used for use in a heat-using device, thereby realizing the actual utilization of thermal energy. Through this arrangement, the waste heat steam of multiple reaction devices can be fully utilized for heat exchange to achieve the purpose of heat energy conversion and reuse, saving resources, and at the same time, it can also avoid the waste heat steam of multiple reaction devices being directly discharged into the air, causing damage to the environment.

[0011] Furthermore, a spraying member is provided inside the absorption device, the liquid inlet is provided at the top of the absorption device, and the spraying member is connected to the liquid inlet and extends along the radial direction of the absorption device.

[0012] In the present scheme, through this arrangement, the liquid entering from the liquid inlet can be sprayed out through the spray piece, and can fall to the bottom of the absorption device under the action of gravity, so that the liquid can exchange heat with the waste heat steam during the falling process; in addition, the spray piece extends along the radial direction of the absorption device at the top of the absorption device, so that the spray piece covers the top of the absorption device as much as possible in the radial direction of the absorption device, further expanding the range of liquid spraying through the spray piece and improving the efficiency of heat exchange.

[0013] Furthermore, the spray part includes a spray pipe and a plurality of spray heads, the spray pipe is connected to the liquid inlet and extends along the radial direction of the absorption device, and the plurality of spray heads are arranged on the spray pipe at preset intervals and can rotate freely relative to the spray pipe.

[0014] In the present scheme, through this arrangement, a spray pipe is used to directly connect to the liquid inlet, and a plurality of nozzles are arranged on the spray pipe at preset intervals, so that the liquid entering from the liquid inlet can be sprayed out through the plurality of nozzles, and the plurality of nozzles can rotate freely relative to the spray pipe, thereby further expanding the spray range of the liquid and the uniformity of the liquid diffusion, and also making it more convenient to adjust the spray direction of the liquid as needed.

[0015] Furthermore, there are multiple liquid inlets, and the multiple liquid inlets are arranged on the side wall of the absorption device at preset intervals along the axial direction of the absorption device;

[0016] The number of the spray pipes is the same as the number of the liquid inlets, and one end of each of the plurality of spray pipes is connected to the corresponding liquid inlets respectively.

[0017] In the present solution, by arranging a plurality of liquid inlets on the side wall of the absorption device, it is more convenient to connect one end of the spray pipe to the corresponding liquid inlet and extend along the radial direction of the absorption device; in addition, when the plurality of liquid inlets are arranged at a preset distance along the axial direction of the absorption device, the plurality of spray pipes can form a multi-layer liquid injection pipeline on the top of the absorption device, and the liquid is then sprayed out through a plurality of nozzles on each layer of the injection pipeline, thereby further increasing the injection amount of the liquid, thereby improving the heat exchange efficiency between the liquid and the waste heat steam.

[0018] Furthermore, the liquid outlet is arranged at the bottom of the absorption device, and the heat exchange element includes a connecting pipe and an injection head, the two ends of the connecting pipe are respectively connected to the steam inlet and the injection head, and the injection head is located between the liquid inlet and the liquid outlet in the axial direction of the absorption device, and the injection port of the injection head is arranged toward the top of the absorption device.

[0019] In the present scheme, the steam inlet and the injection head are connected by a connecting pipe, so that the waste heat steam can enter the interior of the absorption device through the steam inlet and then be injected out from the injection head. By adjusting the position of the injection head in the absorption device and the direction of the injection port, the waste heat steam can be injected toward the top of the absorption device, thereby fully contacting with the liquid sprayed from the spray part at the liquid inlet to achieve heat exchange with the sprayed liquid. The liquid after heat exchange can be discharged from the liquid outlet at the bottom of the absorption device, thereby achieving the purpose of heat energy conversion and reuse.

[0020] Furthermore, a steam outlet is also provided on the top of the absorption device, and the steam outlet is connected to the communication path between the steam inlet and the steam exhaust port.

[0021] In the present scheme, through this arrangement, after the waste heat steam has exchanged heat with the liquid entering from the liquid inlet, part of the waste heat steam that has not been completely absorbed can be discharged from the steam outlet, and recirculated into the interior of the absorption device to continue to exchange heat with the liquid in the absorption device, thereby avoiding the waste heat steam from being unable to be discharged in the absorption device, resulting in excessive pressure inside the absorption device, or avoiding the waste heat steam from being discharged after exchanging heat with the liquid once, so as to maximize the heat exchange efficiency between the waste heat steam and the liquid.

[0022] Furthermore, the liquid outlet is arranged at the bottom of the absorption device, and the steam inlet is arranged at the top of the absorption device;

[0023] The heat exchange element comprises a plurality of groups of heat exchange tubes, which are respectively connected to the steam inlet and extend toward the bottom of the absorption device in a U-shaped bending manner inside the absorption device.

[0024] In this scheme, through this arrangement, the steam inlet is set at the top of the absorption device, the internal medium of the heat exchange tube is waste heat steam, and the external medium of the heat exchange tube is the liquid to be exchanged, and the transfer of heat energy is achieved through indirect heat exchange. The number of groups of heat exchange tubes and the number of bends of each group of heat exchange tubes can be adjusted as needed to meet the needs of different heat exchange degrees.

[0025] Furthermore, the heat exchange element further comprises a multi-layer push-pull box, and the multiple groups of heat exchange tubes are respectively arranged inside the multi-layer push-pull boxes, and the inlets of the multiple groups of heat exchange tubes extend out of the corresponding push-pull boxes and are connected to the steam inlet;

[0026] The multi-layer push-pull boxes are arranged inside the absorption device along the axial direction of the absorption device, and can move relative to the absorption device along the radial direction of the absorption device.

[0027] In the present solution, by respectively arranging multiple groups of heat exchange tubes inside the multi-layer push-pull boxes and arranging the positions of the multi-layer push-pull boxes relative to the absorption device, the heat exchange tubes and the push-pull boxes can be pushed and pulled relative to the absorption device as a whole. When heat exchange is required, only the heat exchange tubes and the push-pull boxes need to be operated as a whole, thereby simplifying the operation. At the same time, the number of layers of the push-pull boxes can be adjusted as needed to meet the needs of different heat exchange degrees.

[0028] Furthermore, the absorption device also includes a steam outlet, and outlets of multiple groups of the heat exchange tubes respectively extend out of the corresponding push-pull boxes and are connected to the steam outlet, and the steam outlet is communicated with the liquid outlet.

[0029] In the present scheme, through this arrangement, when the multi-layer push-pull boxes are arranged inside the absorption device, the multiple groups of heat exchange tubes corresponding to the multi-layer push-pull boxes can be connected in parallel to the steam inlet and the steam outlet, so that the settings between the multi-layer push-pull boxes will not affect each other, and when the waste heat steam exchanges heat with the liquid through the multiple groups of heat exchange tubes, the waste heat steam inside the heat exchange tubes can also be liquefied and discharged through the liquid outlet for use by other heat-using devices.

[0030] Furthermore, a temperature sensor is also provided inside the storage device, and the outlet of the storage device is connected to the liquid inlet and the heat using device through a flow regulating member.

[0031] In this solution, a temperature sensor is provided inside the storage device to measure the temperature of the liquid after heat exchange and monitor the temperature change in real time to meet the use requirements of the heat-using device; and when the temperature of the liquid in the storage device does not meet the requirements, the flow regulating member between the storage device and the liquid inlet can be opened to realize the flow circulation of the liquid, and the liquid then enters the absorption device for heat exchange until the temperature of the liquid inside the storage device meets the requirements, and then the liquid is transported to the heat-using device.

[0032] Furthermore, the steam secondary utilization system also includes a filter and a drive, and the filter and the drive are arranged in series on the communication path between the outlet of the storage device and the liquid inlet of the absorption device and the heat using device respectively.

[0033] In this solution, a filter element and a drive element are connected in series between the outlet of the storage device and the liquid inlet of the absorption device or the heat-using device to filter and remove impurities from the liquid discharged from the storage device, and the filtered liquid is driven into the absorption device for repeated heat exchange or into the heat-using device, thereby realizing more efficient conversion and utilization of thermal energy.

[0034] Furthermore, the steam secondary utilization system also includes a distribution device, which is connected to the steam exhaust port and the steam inlet, and flow regulating components are provided on the connected path to adjust the waste heat steam accommodating multiple reaction devices and transport it to the interior of the absorption device.

[0035] In this solution, by arranging a distribution device on the path connecting the steam exhaust port of the reaction device and the steam inlet of the absorption device, the waste heat steam discharged from the steam exhaust port can be adjusted by the flow regulating parts in the distribution device to provide a stable steam supply, thereby ensuring the stability of the operation of the entire system.

[0036] Furthermore, the distribution device includes a multi-way pipe, a heat-insulating component and a protective component. The steam exhaust port and the steam inlet are respectively connected to the connecting ports of the multi-way pipe, and the heat-insulating component and the protective component are sequentially laid on the periphery of the multi-way pipe.

[0037] In the present solution, the steam exhaust port and the steam inlet are respectively connected to the connection ports of the multi-way pipe, so that the distribution device can collect the waste heat steam of multiple reaction devices and then transport it to the interior of the absorption device; in addition, insulation parts and protective parts are successively laid on the periphery of the multi-way pipe. The insulation parts can avoid heat transfer or heat loss between the multi-way pipe and other components, and the protective parts can protect the inner layer of protective material to the maximum extent, so that the distribution device can withstand external pressure without deformation.

[0038] Furthermore, the reaction device includes a primary seed tank, a secondary seed tank, a fermentation tank, a feed tank, a separation tank and a feeding tank.

[0039] In this scheme, the reaction device specifically includes a primary seed tank, a secondary seed tank, a fermentation tank, a feed tank, a separation tank and a flow tank to meet the production process requirements of producing long-chain dibasic acids.

[0040] Furthermore, the heat-using device includes a hot alkaline water preparation tank, a hot citric acid water preparation tank, a hot aminoacid water preparation tank, and a batching tank and a culture medium mixing tank arranged in series.

[0041] The positive and progressive effects of the utility model are:

[0042] In the steam secondary utilization system, when multiple reaction devices are sterilized with high-temperature steam, the waste heat steam can be discharged through the steam exhaust ports of the multiple reaction devices, and then enter the interior of the absorption device through the steam inlet of the absorption device. The heat exchanger connected to the steam inlet is used to exchange heat with the liquid on the path connecting the liquid inlet and the liquid outlet. The liquid absorbs the heat of the waste heat steam and is heated and then discharged from the liquid outlet. The liquid after heat exchange is stored by setting a special storage device, and the liquid after heat exchange is repeatedly heat exchanged as needed, or the liquid after heat exchange is used by a heat-using device to realize the actual utilization of thermal energy. Through this setting, the waste heat steam of multiple reaction devices can be fully utilized for heat exchange to achieve the purpose of heat energy conversion and reuse, saving resources, and at the same time, it can also avoid the waste heat steam of multiple reaction devices being directly discharged into the air, causing damage to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of the overall connection of the steam secondary utilization system in Example 1 of the utility model.

[0044] Figure 2 This is a schematic diagram of the overall connection of the steam secondary utilization system in Example 2 of the utility model.

[0045] Description of reference numerals:

[0046] First level seed tank 1

[0047] Secondary seed tank 2

[0048] Fermentation tank 3

[0049] Feed tank 4

[0050] Disinfection tank 5

[0051] Feed tank 6

[0052] Dispensing device 7

[0053] Absorption device 8

[0054] Storage device 9

[0055] Filter 10

[0056] Driving member 11

[0057] Batching tank 12

[0058] Culture medium mixing tank 13

[0059] Hot alkaline water preparation tank 14

[0060] Hot lemon acid water preparation tank 15

[0061] Hot ammonia acid water preparation tank 16

[0062] Regulating valve 17

[0063] Connecting pipe 18

[0064] Injection head 19

[0065] Heat exchange tube 20

[0066] Push-pull box 21

[0067] Steam exhaust port 61

[0068] Spray pipe 81

[0069] Nozzle 82

[0070] Steam inlet 83

[0071] Steam outlet 84

[0072] Liquid inlet 85

[0073] Liquid outlet 86

[0074] Temperature sensor 91 DETAILED DESCRIPTION

[0075] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0076] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0077] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0078] Example 1

[0079] In the process of producing long-chain dibasic acids by biological fermentation, multiple reaction devices such as fermentation tanks and feeding tanks are used. When using these reaction devices, high-temperature steam is generally used to disinfect and sterilize the interior of the reaction device. The temperature of the waste heat steam discharged from the reaction device after disinfection and sterilization is still relatively high, which has the value of heat energy recovery and utilization.

[0080] This embodiment provides a steam secondary utilization system. Figure 1As shown, the steam secondary utilization system includes six reaction devices, an absorption device 8 and a storage device 9. The six reaction devices are respectively a primary seed tank 1, a secondary seed tank 2, a fermentation tank 3, a feed tank 4, a separation tank 5 and a flow tank 6. These reaction devices are all provided with a steam discharge port 61, and the waste heat steam inside the reaction device can be discharged through the corresponding steam discharge port 61. The absorption device 8 is provided with a steam inlet 83 and a liquid inlet 85 and a liquid outlet 86 that are interconnected. The steam inlet 83 is connected to the steam discharge ports 61 of the six reaction devices. The absorption device 8 is provided with a heat exchanger connected to the steam inlet 83 inside. The heat exchanger specifically includes a connecting pipe 18 and an injection head 19. The heat exchanger is arranged on the connecting path between the liquid inlet 85 and the liquid outlet 86. The storage device 9 is provided with an inlet and an outlet. The inlet of the storage device 9 is connected to the liquid outlet 86, and the outlet of the storage device 9 is connected to the liquid inlet 85 and is also used to connect the general heating device. The heat-using device may be a batching tank 12 and a culture medium mixing tank 13 which are connected in sequence, and the heated liquid (such as water) may enter the batching tank 12 and be used directly as batching water, and then flow into the culture medium mixing tank 13 and be used as upper tank water. The heat-using device may also be a hot alkaline water preparation tank 14, a hot citric acid water preparation tank 15, and a hot amino acid water preparation tank 16.

[0081] Through the above-mentioned setting, when these reaction devices are sterilized with high-temperature steam, the waste heat steam can be discharged through the steam exhaust port 61 corresponding to these reaction devices, and then enter the interior of the absorption device 8 through the steam inlet 83 of the absorption device 8, and the heat exchanger connected to the steam inlet 83 is used to heat the liquid on the communication path between the liquid inlet 85 and the liquid outlet 86. The liquid absorbs the heat of the waste heat steam and is heated and then discharged from the liquid outlet 86. The liquid after heat exchange is stored by setting a special storage device 9, and the liquid after heat exchange is repeatedly heat exchanged as needed, or the liquid after heat exchange is used by the heat device, so as to realize the actual utilization of thermal energy. Through this setting, the waste heat steam of these reaction devices can be fully utilized for heat exchange to achieve the purpose of heat energy conversion and reuse, save resources, and at the same time, it can also avoid the waste heat steam of these reaction devices being directly discharged into the air, causing damage to the environment.

[0082] It should be noted that the reaction device in this embodiment specifically refers to a device that performs sterilization by steam in the air disinfection and real disinfection stages and discharges the residual heat steam of the reaction. In this embodiment, the number of reaction devices is six, namely, a primary seed tank 1, a secondary seed tank 2, a fermentation tank 3, a feed tank 4, a sub-disinfection tank 5 and a flow-addition tank 6, to meet the production process requirements of long-chain dibasic acids. In other embodiments, the number of reaction devices can be adjusted according to the actual production process, and the name of the specific reaction device and the function realized can also be adjusted accordingly, without fixed restrictions.

[0083] Further, such as Figure 1 As shown, a spraying member is further arranged inside the absorption device 8, and the spraying member specifically consists of a spraying pipe 81 and a nozzle 82. The liquid inlet 85 is correspondingly arranged on the top side wall of the absorption device 8. The spraying member is connected to the liquid inlet 85 and extends in the radial direction of the absorption device 8, that is, the spraying member is horizontally arranged on the top of the absorption device 8. Through this arrangement, the liquid entering from the liquid inlet 85 can be sprayed out through the spraying member, and can fall to the bottom of the absorption device 8 under the action of gravity, so that the liquid exchanges heat with the waste heat steam during the falling process; in addition, the spraying member extends in the radial direction of the absorption device 8 at the top of the absorption device 8, so that the spraying member covers the top of the absorption device 8 as much as possible in the radial direction of the absorption device 8, further expanding the range of liquid spraying through the spraying member, and improving the efficiency of heat exchange.

[0084] Specifically, each spray component in the present embodiment specifically includes a spray pipe 81 and four nozzles 82. One end of the spray pipe 81 is connected to the liquid inlet 85 and extends along the radial direction of the absorption device 8, that is, the spray pipe 81 is horizontally arranged on the top of the absorption device 8, and the four nozzles 82 are arranged at a preset distance on the spray pipe 81 and can rotate freely relative to the spray pipe 81, so that the liquid entering from the liquid inlet 85 can be sprayed out through these nozzles 82, and the free rotation can further expand the spray range of the liquid and the uniformity of the liquid diffusion, and it is also more convenient to adjust the spray direction of the liquid as needed.

[0085] In addition, in the present embodiment, the number of liquid inlets 85 is specifically set to three, and the three liquid inlets 85 are arranged on the side wall of the absorption device 8 at a preset distance along the axial direction of the absorption device 8. At this time, the number of spray pipes 81 is the same as the number of liquid inlets 85, that is, the number of spray pipes 81 is also three, and one end of the three spray pipes 81 is respectively connected to the corresponding liquid inlets 85 and extends along the radial direction of the absorption device 8. Four nozzles 82 are arranged on each spray pipe 81, that is, a total of twelve nozzles 82 are formed. Through this arrangement, the liquid inlets 85 are all arranged on the side walls of the absorption device 8, which makes it more convenient for one end of the spray pipe 81 to be connected to the corresponding liquid inlet 85 and extend along the radial direction of the absorption device 8; in addition, when these liquid inlets 85 are arranged at a preset distance along the axial direction of the absorption device 8, multiple spray pipes 81 can form a multi-layer liquid injection pipeline on the top of the absorption device 8, and the liquid is then sprayed out through multiple nozzles 82 on each layer of the injection pipeline, further increasing the injection amount of the liquid, thereby improving the heat exchange efficiency between the liquid and the waste heat steam.

[0086] It should be noted that the number of the liquid inlet 85, the spray pipe 81 and the nozzle 82 in this embodiment are exemplary arrangements, and in other embodiments, they can be adjusted according to specific needs. In addition, the liquid inlet 85 does not need to be arranged on the side wall of the absorption device 8, for example, it can be arranged on the top of the absorption device 8, and the nozzle 82 can spray the liquid downward by the bending arrangement of the spray pipe 81.

[0087] Further, such as Figure 1 As shown, the liquid inlet 85 and the liquid outlet 86 are respectively arranged on the top side wall and the bottom side wall, forming a liquid flow path inside the absorption device 8. A heat exchange component is also arranged inside the absorption device 8, and the heat exchange component specifically includes a connecting pipe 18 and an injection head 19. The two ends of the connecting pipe 18 are respectively connected to the steam inlet 83 and the injection head 19 of the absorption device 8. The injection head 19 is located between the liquid inlet 85 and the liquid outlet 86 in the axial direction of the absorption device 8, that is, located on the liquid flow path, and the injection port of the injection head 19 is arranged toward the top of the absorption device 8. Through this arrangement, the waste heat steam can be sprayed out from the spray head 19 after entering the interior of the absorption device 8 through the steam inlet 83, and by adjusting the position of the spray head 19 in the absorption device 8 and the direction of the spray port, the waste heat steam can be sprayed toward the top of the absorption device 8, so as to fully contact with the liquid (such as water) sprayed by the spray part at the liquid inlet 85, so as to achieve heat exchange with the sprayed liquid. The liquid after heat exchange can be discharged from the liquid outlet 86 located at the bottom of the absorption device 8, thereby achieving the purpose of heat energy conversion and reuse.

[0088] In addition, a steam outlet 84 is also provided at the top of the absorption device 8, and the steam outlet 84 is connected to the connection path between the steam inlet 83 and the steam discharge port 61, so that after the waste heat steam exchanges heat with the liquid entering from the liquid inlet 85, part of the steam that has not been completely absorbed can be discharged from the steam outlet 84, and recirculated into the interior of the absorption device 8 to continue to exchange heat with the liquid in the absorption device 8, thereby avoiding the waste heat steam from being unable to be discharged in the absorption device 8, resulting in excessive pressure inside the absorption device 8, or avoiding the waste heat steam from being discharged after exchanging heat with the liquid once, so as to maximize the heat exchange efficiency between the waste heat steam and the liquid.

[0089] Through the above settings, the temperature of the waste heat steam before heat exchange is about 110 degrees Celsius. After heat exchange, a small amount of waste heat steam is discharged through the steam outlet 84. The temperature of the discharged waste heat steam is about 70 degrees Celsius. This part of the waste heat steam returns to the distribution device 7 and enters the absorption device 8 to continue heat exchange. This method can achieve the liquid temperature after heat exchange reaches 75 degrees Celsius before being utilized.

[0090] As mentioned above, Figure 1As shown, the steam secondary utilization system includes a storage device 9, and a temperature sensor 91 is also arranged inside the storage device 9, and the outlet of the storage device 9 is connected to the liquid inlet 85 and the heat-using device through the regulating valve 17. By arranging the temperature sensor 91 inside the storage device 9, the temperature of the liquid after heat exchange can be measured, and the temperature change can be monitored in real time to meet the use requirements of the heat-using device; and when the temperature of the liquid in the storage device 9 does not meet the requirements, the regulating valve 17 between the storage device 9 and the liquid inlet 85 can be opened to realize the flow circulation of the liquid, and the liquid enters the absorption device 8 for heat exchange again, until the temperature of the liquid inside the storage device 9 reaches the requirements, and then the liquid is transported to the heat-using device.

[0091] Further, such as Figure 1 As shown, the steam secondary utilization system also includes a filter 10 and a drive 11, which are arranged in series at the outlet of the storage device 9 and the communication path between the liquid inlet 85 of the absorption device 8 and the heat-using device. Among them, the filter 10 is preferably a Y-type filter for removing impurities in the liquid, and the drive 11 is preferably a variable frequency circulation pump for providing power for the flow of the liquid. Through this arrangement, the liquid discharged from the storage device 9 can be filtered, and the filtered liquid can be driven into the absorption device 8 or the heat-using device, so as to realize the conversion and utilization of thermal energy more efficiently.

[0092] Further, such as Figure 1 As shown, the steam secondary utilization system also includes a distribution device 7, which is connected to the steam discharge port 61 of the six reaction devices and the steam inlet 83 of the absorption device 8 at the same time, and a regulating valve 17 is arranged on the connected path to adjust the waste heat steam of these reaction devices and transport them to the inside of the absorption device 8. Through this arrangement, the waste heat steam discharged from the steam discharge port 61 can be adjusted by the regulating valve 17 in the distribution device 7 respectively to provide a stable steam supply, thereby ensuring the stability of the operation of the entire system. Specifically, the specific structure adopted by the distribution device 7 in this embodiment is a multi-pass pipeline and a heat preservation member and a protective member laid on the multi-pass pipeline. The steam discharge port 61 of the six reaction devices and the steam inlet 83 of the absorption device 8 are respectively connected to the connection port of the multi-pass pipeline, and the heat preservation member and the protective member are sequentially laid on the periphery of the multi-pass pipeline. Among them, the heat preservation member adopts the heat preservation material of centrifugal glass wool, with a thickness of about 50mm, good sealing and excellent heat preservation, low thermal conductivity, heat will not be conducted outward, and has the property of corrosion resistance, very stable properties in the chemical environment, and a relatively long service life. The protective layer is made of 0.5mm thick stainless steel, which is riveted to achieve full sealing. It is resistant to acid and alkali corrosion, can withstand external pressure without deformation, and can protect the inner insulation material to the maximum extent.

[0093] Example 2

[0094] This embodiment also provides a steam secondary utilization system, which is basically the same as the steam secondary utilization system in Example 1, and the same parts are not repeated here. The difference is that the internal configuration of the absorption device 8 is different.

[0095] Specifically, Figure 2 As shown, the liquid inlet 85 and the liquid outlet 86 of the absorption device 8 are also respectively arranged on the top side wall and the bottom side wall, forming a liquid flow path inside the absorption device 8. However, in this embodiment, there is only one liquid inlet 85, and at the same time, there is also one spray pipe 81. One end of the spray pipe 81 is connected to the liquid inlet 85 and extends along the radial direction of the absorption device 8. Four nozzles 82 are also arranged on the spray pipe 81. However, it should be noted that the liquid inlet 85 in this embodiment can also be set to three as in Example 1, and similarly, the spray pipe 81 can also be set to three.

[0096] Further, such as Figure 2 As shown, the steam inlet 83 of the absorption device 8 is arranged near the liquid inlet 85, and is also arranged on the top side wall of the absorption device 8. The heat exchange component specifically includes three groups of heat exchange tubes 20, which are respectively connected to the steam inlet 83 and extend to the bottom of the absorption device 8 in a U-shaped bending manner inside the absorption device 8. Through this arrangement, the waste heat steam flows inside the heat exchange tube 20, that is, the internal medium of the heat exchange tube 20 is the waste heat steam, and the external medium of the heat exchange tube 20 is the liquid to be heat exchanged (such as water), and the heat energy is transferred by indirect heat exchange. The number of groups of heat exchange tubes 20 and the number of bends of each group of heat exchange tubes 20 can be adjusted as needed to meet the needs of different heat exchange degrees.

[0097] In addition, the heat exchanger specifically includes a three-layer push-pull box 21, and the three groups of heat exchange tubes 20 are respectively arranged inside the three push-pull boxes 21, and the inlets of the three groups of heat exchange tubes 20 extend out of the corresponding push-pull boxes 21 and are connected to the steam inlet 83. The three-layer push-pull box 21 is arranged inside the absorption device 8 along the axial direction of the absorption device 8, and can be moved along the radial direction of the absorption device 8 relative to the absorption device 8. In this solution, by correspondingly arranging the three groups of heat exchange tubes 20 inside the three-layer push-pull box 21, and the position of the three-layer push-pull box 21 relative to the absorption device 8, the heat exchange tube 20 and the push-pull box 21 can be pushed and pulled as a whole relative to the absorption device 8. When heat exchange is required, only the heat exchange tube 20 and the push-pull box 21 need to be operated as a whole, which simplifies the operation; at the same time, the number of layers of the push-pull box 21 can also be adjusted as needed to meet the needs of different heat exchange degrees, that is, in other embodiments, the number of groups of heat exchange tubes 20 and the number of push-pull boxes 21 can be adjusted as needed.

[0098] Further, such as Figure 2 As shown, the absorption device 8 also includes a steam outlet 84, and the outlets of the three groups of heat exchange tubes 20 extend out of the corresponding push-pull boxes 21 and are connected to the steam outlet 84, and the steam outlet 84 is interconnected with the liquid outlet 86. Through this arrangement, when the multi-layer push-pull boxes 21 are arranged inside the absorption device 8, the multiple groups of heat exchange tubes 20 corresponding to the multi-layer push-pull boxes 21 can be connected in parallel to the steam inlet 83 and the steam outlet 84, so that the arrangements between the multi-layer push-pull boxes 21 will not affect each other, and when the waste heat steam exchanges heat with the liquid through the multiple groups of heat exchange tubes 20, the waste heat steam inside the heat exchange tubes 20 is liquefied and discharged through the steam outlet 84, and mixed with the liquid after heat exchange discharged through the liquid outlet 86, so as to be used by other heat-using devices.

[0099] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A steam secondary utilization system, characterized in that: The steam secondary utilization system comprises: A plurality of reaction devices, each of which is provided with a steam discharge port; An absorption device, wherein the absorption device is provided with a steam inlet connected to the steam discharge port and a liquid inlet and a liquid outlet connected to each other, and a heat exchange element connected to the steam inlet is provided inside the absorption device, and the heat exchange element is provided on the communication path between the liquid inlet and the liquid outlet; A storage device is provided with an inlet and an outlet, the inlet of the storage device is connected to the liquid outlet, the outlet of the storage device is connected to the liquid inlet and is also used to connect to a heating device.

2. The steam secondary utilization system according to claim 1, characterized in that: A spraying member is also arranged inside the absorption device. The liquid inlet is arranged on the top of the absorption device. The spraying member is connected to the liquid inlet and extends along the radial direction of the absorption device.

3. The steam secondary utilization system according to claim 2, characterized in that: The spraying member comprises a spraying pipe and a plurality of spray heads. The spraying pipe is connected to the liquid inlet and extends along the radial direction of the absorption device. The plurality of spray heads are arranged on the spraying pipe at preset intervals and can rotate freely relative to the spraying pipe.

4. The steam secondary utilization system according to claim 3, characterized in that: There are multiple liquid inlets, and the multiple liquid inlets are arranged on the side wall of the absorption device at a preset distance along the axial direction of the absorption device; The number of the spray pipes is the same as the number of the liquid inlets, and one end of each of the plurality of spray pipes is connected to the corresponding liquid inlets respectively.

5. The steam secondary utilization system according to claim 2, characterized in that: The liquid outlet is arranged at the bottom of the absorption device, and the heat exchange component includes a connecting pipe and an injection head. The two ends of the connecting pipe are respectively connected to the steam inlet and the injection head. The injection head is located between the liquid inlet and the liquid outlet in the axial direction of the absorption device, and the injection port of the injection head is arranged toward the top of the absorption device.

6. The steam secondary utilization system according to claim 5, characterized in that: The top of the absorption device is also provided with a steam outlet, and the steam outlet is connected to the communication path between the steam inlet and the steam exhaust port.

7. The steam secondary utilization system according to claim 2, characterized in that: The liquid outlet is arranged at the bottom of the absorption device, and the steam inlet is arranged at the top of the absorption device; The heat exchange element comprises a plurality of groups of heat exchange tubes, which are respectively connected to the steam inlet and extend toward the bottom of the absorption device in a U-shaped bending manner inside the absorption device.

8. The steam secondary utilization system according to claim 7, characterized in that: The heat exchange element further includes a multi-layer push-pull box, and the multiple groups of heat exchange tubes are respectively arranged inside the multi-layer push-pull boxes, and the inlets of the multiple groups of heat exchange tubes extend out of the corresponding push-pull boxes and are connected to the steam inlet; The multi-layer push-pull boxes are arranged inside the absorption device along the axial direction of the absorption device, and can move relative to the absorption device along the radial direction of the absorption device.

9. The steam secondary utilization system according to claim 8, characterized in that: The absorption device also includes a steam outlet, and outlets of multiple groups of heat exchange tubes extend out of the corresponding push-pull boxes respectively and are connected to the steam outlet, and the steam outlet is communicated with the liquid outlet.

10. The steam secondary utilization system according to claim 1, characterized in that: A temperature sensor is also arranged inside the storage device, and the outlet of the storage device is connected to the liquid inlet and the heat using device through a flow regulating member.

11. The steam secondary utilization system according to claim 1, characterized in that: The steam secondary utilization system also includes a filter and a drive, and the filter and the drive are arranged in series on the communication paths between the outlet of the storage device and the liquid inlet of the absorption device and the heat-using device respectively.

12. The steam secondary utilization system according to any one of claims 1 to 11, characterized in that: The steam secondary utilization system also includes a distribution device, which is connected to the steam exhaust port and the steam inlet, and a flow regulating member is provided on the connecting path to adjust the waste heat steam accommodating multiple reaction devices and transport it to the interior of the absorption device.

13. The steam secondary utilization system according to claim 12, characterized in that: The distribution device includes a multi-way pipe, a heat-insulating component and a protective component. The steam exhaust port and the steam inlet are respectively connected to the connecting port of the multi-way pipe. The heat-insulating component and the protective component are sequentially laid on the periphery of the multi-way pipe.

14. The steam secondary utilization system according to any one of claims 1 to 11, characterized in that: The reaction device comprises a primary seed tank, a secondary seed tank, a fermentation tank, a feeding tank, a separation tank and a feeding tank.

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