CN114413651A - Waste heat recycling system and method - Google Patents
Waste heat recycling system and method Download PDFInfo
- Publication number
- CN114413651A CN114413651A CN202111662172.1A CN202111662172A CN114413651A CN 114413651 A CN114413651 A CN 114413651A CN 202111662172 A CN202111662172 A CN 202111662172A CN 114413651 A CN114413651 A CN 114413651A
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- China
- Prior art keywords
- waste heat
- module
- hot water
- heat recovery
- workshop
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002918 waste heat Substances 0.000 title claims abstract description 41
- 238000004064 recycling Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000011084 recovery Methods 0.000 claims abstract description 32
- 238000003860 storage Methods 0.000 claims description 22
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 9
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 9
- 235000005822 corn Nutrition 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 241000196324 Embryophyta Species 0.000 claims description 4
- 229920002261 Corn starch Polymers 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000008120 corn starch Substances 0.000 claims description 3
- 241000209149 Zea Species 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 2
- 240000008042 Zea mays Species 0.000 description 8
- 229920002472 Starch Polymers 0.000 description 4
- 239000008107 starch Substances 0.000 description 4
- 235000019698 starch Nutrition 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 2
- 239000002285 corn oil Substances 0.000 description 2
- 235000005687 corn oil Nutrition 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 1
- 229930195725 Mannitol Natural products 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention belongs to the technical field of agricultural product processing technology, and particularly relates to a waste heat recycling system and a waste heat recycling method, wherein the waste heat recycling system comprises the following steps: the system comprises a waste heat recovery module, a heat exchange module and a heat energy recycling module; the waste heat recovery module is used for intensively recovering high-temperature water generated in a workshop; the heat exchange module exchanges heat between the high-temperature water recovered by the waste heat recovery module and the low-temperature water generated by the heat energy recycling module. The invention recycles the steam condensate of the workshop to exchange heat with the low-temperature water generated in the workshop, so that the waste heat is fully used, and the utilization rate of energy is improved.
Description
Technical Field
The invention belongs to the technical field of agricultural product processing technologies, and particularly relates to a waste heat recycling system and method.
Background
Corn is one of three major food crops in the world and is also an important feed raw material, and the corn is a dry crop, has high yield per unit and great yield increasing potential, and therefore, the corn occupies an important position in agricultural production. Corn processing generally involves roguing, steeping, separating the corn husks and germ, and then further processing. The corn raw material needs a large amount of steam in the processing process, the steam condenses the material after heating to form steam condensate water, the temperature of the steam condensate water is 100-120 ℃, the condensate water enters a steam flash tank in the past, steam condensate water and waste steam are obtained, the waste steam is discharged, and heat energy is not fully utilized.
Disclosure of Invention
The present invention is directed to overcoming the above problems in the prior art and providing a system and method for recycling waste heat.
The purpose of the invention is realized by the following technical scheme:
a waste heat recovery system comprising: the system comprises a waste heat recovery module, a heat exchange module and a heat energy recycling module;
the waste heat recovery module is used for intensively recovering high-temperature water generated in a workshop; the heat exchange module exchanges heat between the high-temperature water recovered by the waste heat recovery module and the low-temperature water generated by the heat energy recycling module.
Preferably, the waste heat recovery module condenses the high-temperature hot water generated from the plant into steam of the plant.
Preferably, the temperature of the steam condensate is 100-120 ℃.
Preferably, the heat exchange module is a tubular heat exchanger.
Preferably, the heat energy recycling module comprises a hot water supply storage tank and a hot water return storage tank;
the high-temperature water outlet end of the heat exchanger is communicated with the hot water supply storage tank; a low-temperature water inlet of the heat exchanger is communicated with the hot water return storage tank;
the hot water supply storage tank supplies the process needing heating for the workshop and a workshop humidity controller.
Preferably, the heat energy recycling module is further provided with a hot water cache tank; the hot water cache tank is communicated with the hot water supply storage tank; the hot water buffer tank supplies a process needing heating for a workshop and a workshop humidity controller.
A method of waste heat recovery, comprising the steps of:
s1, collecting steam condensate water at the temperature of 100-120 ℃ by using a waste heat recovery module;
s2, exchanging heat between the steam condensate collected in the step S1 and low-temperature water at 60-70 ℃ generated on a corn starch production line;
s3, cooling the steam condensate to 70-90 ℃ in the step S2, and enabling the cooled steam condensate to enter a condensate storage tank;
and S4, heating the low-temperature water of 60-70 ℃ in the step S2 to 80-90 ℃, and preheating the heated low-temperature water by using the materials of the corn production line.
The waste heat recovery module collects steam condensate generated in a workshop, then carries out heat exchange through the heat exchange module, the steam condensate with the temperature of 100-120 ℃ forms water with the temperature of 75-80 ℃ through heat exchange, and then the steam condensate enters the starch workshop condensate storage tank to be used as process water in the starch workshop.
The low-temperature water at 60-70 ℃ generated by the process flow and the workshop drying is mainly used in the mannitol crystallization process after heat exchange, the temperature of a horizontal crystallizer is raised before feeding (the temperature of a jacket water is raised from 30-35 ℃ to 60-70 ℃ before horizontal feeding, and the situation that the crystallization of the fed material is too fast to generate microcrystals to influence the yield) is prevented, so that the consumption of steam is replaced. The device can also be used for a drying and dehumidifying function of a workshop, and the humidity of a specific area in the workshop is required to be below 55 percent due to the characteristic requirements of production materials, so that the device can replace the consumption of steam.
Compared with the prior art, the invention has the following technical effects:
according to the waste heat recycling system and method, the steam condensate in the workshop is recycled and is subjected to heat exchange with the low-temperature water generated in the workshop, so that the waste heat is fully used, and the utilization rate of energy is improved.
Drawings
Fig. 1 is a schematic flow chart of a waste heat recovery system according to embodiment 1 of the present invention.
Description of reference numerals:
1-a steam condensate collection tank in a starch workshop; 2-a workshop steam condensate recovery tank; 3-a pharmaceutical workshop steam condensate collection tank; 4-a corn oil workshop steam condensate collection tank; 5-a heat exchanger; 6-hot water supply storage tank; 7-hot water return storage tank; 8-a hot water buffer tank; 9-thermal energy recycling module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below with reference to specific examples and comparative examples. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Unless otherwise specified, the devices used in the present examples, comparative examples and experimental examples were all conventional experimental devices, the materials and reagents used were commercially available without specific reference, and the experimental methods without specific reference were also conventional experimental methods.
Example 1
A waste heat recovery system comprising: the system comprises a waste heat recovery module, a heat exchange module and a heat energy recycling module;
the waste heat recovery module is used for intensively recovering high-temperature water generated in a workshop; the heat exchange module exchanges heat between the high-temperature water recovered by the waste heat recovery module and the low-temperature water generated by the heat energy recycling module.
The waste heat recovery module is used for condensing high-temperature hot water generated in a workshop into steam condensate of the workshop.
The temperature of the steam condensate is 100-120 ℃.
The heat exchange module is a tubular heat exchanger.
As shown in fig. 1, the waste heat recovery module is a steam condensate collecting pipeline, a starch workshop steam condensate collecting tank 1, a pharmaceutical workshop steam condensate collecting tank 3 and a corn oil workshop steam condensate collecting tank 4 are collected and concentrated through a steam condensate receiving pipeline, heat exchange is carried out through a heat exchanger 5, and steam condensate enters a workshop steam condensate recovering tank 2 after the steam condensate is subjected to heat exchange.
The heat energy recycling module comprises a hot water supply storage tank 6 and a hot water return storage tank 7;
the high-temperature water outlet end of the heat exchanger is communicated with the hot water supply storage tank 6; a low-temperature water inlet of the heat exchanger 5 is communicated with the hot water return storage tank 7;
the hot water supply storage tank supplies hot water to a hot water recycling module 9, and the hot water recycling module mainly comprises a process needing to be heated in a workshop and a workshop humidity controller module.
The heat energy recycling module is also provided with a hot water cache tank 8; the hot water cache tank 8 is communicated with the hot water supply storage tank; the hot water buffer tank supplies a process needing heating for a workshop and a workshop humidity controller module.
A method of waste heat recovery, comprising the steps of:
s1, collecting steam condensate water at the temperature of 100-120 ℃ by using a waste heat recovery module;
s2, exchanging heat between the steam condensate collected in the step S1 and low-temperature water at 60-70 ℃ generated on a corn starch production line;
s3, cooling the steam condensate to 70-90 ℃ in the step S2, and enabling the cooled steam condensate to enter a condensate storage tank;
and S4, heating the low-temperature water of 60-70 ℃ in the step S2 to 80-90 ℃, and preheating the heated low-temperature water by using the materials of the corn production line.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. An exhaust heat recovery system, comprising: the system comprises a waste heat recovery module, a heat exchange module and a heat energy recycling module;
the waste heat recovery module is used for intensively recovering high-temperature water generated in a workshop; the heat exchange module exchanges heat between the high-temperature water recovered by the waste heat recovery module and the low-temperature water generated by the heat energy recycling module.
2. The waste heat recovery and utilization system according to claim 1, wherein the waste heat recovery module condenses hot water of high temperature generated from the plant into steam of the plant.
3. The waste heat recovery and utilization system of claim 2, wherein the steam condensate has a temperature of 100-120 ℃.
4. The waste heat recovery system of claim 1, wherein the heat exchange module is a tubular heat exchanger.
5. The waste heat recovery and utilization system of claim 1, wherein the thermal energy reuse module includes a hot water supply tank, a hot water return tank;
the high-temperature water outlet end of the heat exchanger is communicated with the hot water supply storage tank; a low-temperature water inlet of the heat exchanger is communicated with the hot water return storage tank;
the hot water supply storage tank supplies the process needing heating for the workshop and a workshop humidity controller.
6. The waste heat recovery and utilization system of claim 5, wherein the thermal energy reuse module is further provided with a hot water buffer tank; the hot water cache tank is communicated with the hot water supply storage tank; the hot water buffer tank supplies a process needing heating for a workshop and a workshop humidity controller.
7. A method for recycling waste heat is characterized by comprising the following steps:
s1, collecting steam condensate water at the temperature of 100-120 ℃ by using a waste heat recovery module;
s2, exchanging heat between the steam condensate collected in the step S1 and low-temperature water at 60-70 ℃ generated on a corn starch production line;
s3, cooling the steam condensate to 70-90 ℃ in the step S2, and enabling the cooled steam condensate to enter a condensate storage tank;
and S4, heating the low-temperature water of 60-70 ℃ in the step S2 to 80-90 ℃, and preheating the heated low-temperature water by using the materials of the corn production line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111662172.1A CN114413651A (en) | 2021-12-31 | 2021-12-31 | Waste heat recycling system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111662172.1A CN114413651A (en) | 2021-12-31 | 2021-12-31 | Waste heat recycling system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114413651A true CN114413651A (en) | 2022-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111662172.1A Pending CN114413651A (en) | 2021-12-31 | 2021-12-31 | Waste heat recycling system and method |
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| CN (1) | CN114413651A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102138613A (en) * | 2010-12-29 | 2011-08-03 | 内蒙古伊利实业集团股份有限公司 | Device for melting chocolate |
| CN203525335U (en) * | 2013-10-24 | 2014-04-09 | 山东正德食品有限公司 | Waste gas recycling device for pipe bundle drier |
| CN204574862U (en) * | 2015-03-31 | 2015-08-19 | 宁波杭州湾新区祥源动力供应有限公司 | A kind of condensed water in high temperature heating domestic hot water return water system |
| CN207797210U (en) * | 2017-12-15 | 2018-08-31 | 大连中盈能源管理有限公司 | A kind of waste heat recovery heat-exchange system reducing condensed water exhaust temperature |
| CN210229574U (en) * | 2019-05-28 | 2020-04-03 | 山东中谷淀粉糖有限公司 | Clean utilization system of waste heat in corn starch production |
-
2021
- 2021-12-31 CN CN202111662172.1A patent/CN114413651A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102138613A (en) * | 2010-12-29 | 2011-08-03 | 内蒙古伊利实业集团股份有限公司 | Device for melting chocolate |
| CN203525335U (en) * | 2013-10-24 | 2014-04-09 | 山东正德食品有限公司 | Waste gas recycling device for pipe bundle drier |
| CN204574862U (en) * | 2015-03-31 | 2015-08-19 | 宁波杭州湾新区祥源动力供应有限公司 | A kind of condensed water in high temperature heating domestic hot water return water system |
| CN207797210U (en) * | 2017-12-15 | 2018-08-31 | 大连中盈能源管理有限公司 | A kind of waste heat recovery heat-exchange system reducing condensed water exhaust temperature |
| CN210229574U (en) * | 2019-05-28 | 2020-04-03 | 山东中谷淀粉糖有限公司 | Clean utilization system of waste heat in corn starch production |
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Application publication date: 20220429 |