A deodorization, temperature control, and dehumidification system for aquaculture workshops with high humidity environments
By introducing components such as ammonia absorption towers and odor oxidation towers into the breeding workshop, and combining them with multi-stage dehumidification and energy recovery, the problem of joint treatment of dehumidification and temperature control systems and deodorization systems has been solved, achieving efficient temperature and humidity control and significantly reducing operating costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 杭州汉山环境工程技术有限公司
- Filing Date
- 2024-06-06
- Publication Date
- 2026-05-26
AI Technical Summary
The existing dehumidification and temperature control systems in breeding workshops have not been effectively integrated with deodorization systems, resulting in high operating costs and energy waste during the energy recovery process, which affects economic benefits.
An odor control, temperature control, and dehumidification system for a high-humidity aquaculture workshop was designed, including an ammonia absorption tower, an odor oxidation tower, a deodorizing fan, an exhaust stack, a fresh air filter, primary and secondary dehumidification heat exchangers, a fresh air fan, an energy recovery system, and a refrigeration unit. Through multi-stage dehumidification and energy recovery, temperature and humidity are controlled, and operating power consumption is reduced.
Effectively control the temperature and humidity of the breeding workshop, reduce operating power consumption, improve overall economic efficiency, and save energy by 37%-50%.
Smart Images
Figure CN118805742B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of aquaculture technology, and more specifically, to a deodorization, temperature control, and dehumidification system for aquaculture workshops with high humidity air environments. Background Technology
[0002] Aquaculture projects that feed on organic waste, such as black soldier fly larvae, fly larvae, and American cockroaches, are gradually emerging. These projects not only process large amounts of waste but also bring certain economic benefits.
[0003] During the aquaculture process, the moisture in the high-moisture-content organic waste diffuses into the aquaculture workshop through the animals' respiration, metabolism, and evaporation. This, along with the metabolic processes and the action of microorganisms, produces large amounts of ammonia and other foul-smelling gases. If the air environment in the aquaculture workshop is not controlled in a timely manner, it will affect the activity of the animals, slowing their growth and even causing death. Direct discharge not only wastes energy but also harms the atmospheric environment.
[0004] Application number CN202221485918.6 describes a temperature control and dehumidification system for a black soldier fly breeding workshop. This system maintains the temperature and humidity balance in the breeding workshop through simple condensation and heating, but it does not recover energy from the exhaust gas, which increases the power consumption and thus affects the overall economic benefits.
[0005] Application number CN202111213117.4 describes a temperature control and dehumidification system for a black soldier fly breeding workshop. This system recovers energy through a fresh air exchanger, and then the temperature and humidity are regulated by the indoor unit of an air conditioner. According to the control logic, when the outside temperature is low, the fresh air undergoes a process of heating, condensing, dehumidifying, and reheating, resulting in significant energy waste.
[0006] Since aquaculture projects have relatively low profit margins, reducing operating costs is crucial for profitability. Furthermore, existing dehumidification and temperature control systems are not integrated with deodorization systems, further increasing operating costs and hindering the widespread adoption of these systems in the aquaculture industry.
[0007] Therefore, a deodorization, temperature control, and dehumidification system for aquaculture workshops with high humidity air environment is provided. Summary of the Invention
[0008] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.
[0009] To address the technical problems mentioned in the background section, some embodiments of this application provide a deodorization, temperature control, and dehumidification system for a high-humidity air environment aquaculture workshop, comprising: an aquaculture workshop; the aquaculture workshop includes an exhaust gas collection duct and a fresh air duct; the deodorization, temperature control, and dehumidification system for the high-humidity air environment aquaculture workshop further includes: a deodorization system, an energy recovery system, a fresh air system, and a refrigeration unit; the deodorization system includes: an ammonia absorption tower, an odor oxidation tower, a deodorization fan, an exhaust stack, and a first connecting duct; the ammonia absorption tower, the odor oxidation tower, the deodorization fan, and the exhaust stack are sequentially connected via the first connecting duct; the fresh air system includes: a fresh air filter, a primary dehumidification heat exchanger, and a secondary... The system comprises a dehumidifier heat exchanger, a fresh air fan, a first air valve, a second air valve, a third air valve, a fourth air valve, a fifth air valve, a sixth air valve, a seventh air valve, and a third connecting duct. The fresh air filter, the primary dehumidifier heat exchanger, the secondary dehumidifier heat exchanger, and the fresh air fan are connected via the third connecting duct. The energy recovery system includes a heat exchanger, a second connecting duct, and a condensate pump. An atomizing nozzle is provided between the exhaust gas collection duct and the second connecting duct. The inlet pipe of the condensate pump is connected to the drain outlet of the secondary dehumidifier heat exchanger. The outlet pipe of the condensate pump is connected to the atomizing nozzle. The heat exchanger is connected to the ammonia absorption tower via the second connecting duct. The refrigeration unit is connected to the secondary dehumidifier heat exchanger.
[0010] Furthermore, the refrigeration unit includes a low-temperature water pipeline; the refrigeration unit is connected to a secondary dehumidification heat exchanger via the low-temperature water pipeline.
[0011] Furthermore, the refrigeration unit is used to transport low-temperature water to a secondary dehumidification heat exchanger; the temperature of the low-temperature water is 0-15℃.
[0012] Furthermore, the air outlet pipe of the fresh air filter is connected to the air outlet pipe of the deodorizing fan via a third connecting air pipe.
[0013] Furthermore, the third connecting duct is equipped with a control valve, and the ventilation volume of the third connecting duct is 50% to 95% of the ventilation volume of the fresh air duct.
[0014] Furthermore, the air outlet duct of the fresh air fan delivers fresh air to the breeding workshop through the fresh air duct.
[0015] The beneficial effects of this application are: it provides a deodorization, temperature control and dehumidification system for breeding workshops in high humidity environments, which effectively controls the temperature, humidity and odorous gases in the breeding workshop, while greatly reducing the operating power consumption of the system and improving the overall efficiency of the project. Attached Figure Description
[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.
[0017] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.
[0018] In the attached diagram:
[0019] Figure 1 This is an overall schematic diagram based on an embodiment of this application;
[0020] Figure label:
[0021] A1, Ammonia absorption tower; A2, Odor oxidation tower; F1, Deodorization fan; D, Exhaust stack; H1, First connecting duct;
[0022] E1, Heat exchanger; H2, Second connecting duct; P, Condensate pump; C, Fresh air filter; E2, Primary dehumidifying heat exchanger; E3, Secondary dehumidifying heat exchanger; F2, Fresh air fan; V1, First air valve; V2, Second air valve; V3, Third air valve; V4, Fourth air valve; V5, Fifth air valve; V6, Sixth air valve; V7, Seventh air valve; H3, Third connecting duct; B, Refrigeration unit; B1, Low-temperature water pipe; G, Aquaculture workshop; G1, Exhaust gas collection duct; G2, Fresh air duct. Detailed Implementation
[0023] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.
[0024] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.
[0025] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.
[0026] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".
[0027] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.
[0028] Reference Figure 1 A deodorization, temperature control, and dehumidification system for a high-humidity aquaculture workshop includes: an aquaculture workshop G, a deodorization system, an energy recovery system, a fresh air system, and a refrigeration unit B. The aquaculture workshop G includes an exhaust gas collection duct G1 and a fresh air duct G2. The deodorization system includes: an ammonia absorption tower A1, an odor oxidation tower A2, a deodorization fan F1, an exhaust stack D, and a first connecting duct H1. The ammonia absorption tower A1, the odor oxidation tower A2, the deodorization fan F1, and the exhaust stack D are sequentially connected via the first connecting duct H1.
[0029] The fresh air system includes: a fresh air filter C, a primary dehumidifier heat exchanger E2, a secondary dehumidifier heat exchanger E3, a fresh air fan F2, a first air valve V1, a second air valve V2, a third air valve V3, a fourth air valve V4, a fifth air valve V5, a sixth air valve V6, a seventh air valve V7, and a third connecting duct H3. The fresh air filter C, the primary dehumidifier heat exchanger E2, the secondary dehumidifier heat exchanger E3, and the fresh air fan F2 are connected via the third connecting duct H3. Both the primary and secondary dehumidifier heat exchangers E2 and E3 are dehumidifier heat exchangers; the distinction between primary and secondary dehumidifier heat exchangers lies solely in their designation.
[0030] The energy recovery system includes: a heat exchanger E1, a second connecting duct H2, and a condensate pump P. An atomizing nozzle is installed between the exhaust gas collection duct G1 and the second connecting duct H2. The inlet pipe of the condensate pump P is connected to the drain outlet of the secondary dehumidification heat exchanger E3, and the outlet pipe of the condensate pump P is connected to the atomizing nozzle. The heat exchanger and the ammonia absorption tower A1 are connected via the second connecting duct H2.
[0031] Refrigeration unit B includes a low-temperature water pipe B1. Refrigeration unit B is connected to the secondary dehumidification heat exchanger E3 via the low-temperature water pipe B1. Refrigeration unit B is used to transport low-temperature water to the secondary dehumidification heat exchanger E3; the temperature of the low-temperature water is 0-15℃. The outlet duct of the fresh air filter C and the outlet duct of the deodorizing fan F1 are connected via a third connecting duct H3. The third connecting duct H3 is equipped with a control valve, and its ventilation volume is 50% to 95% of the ventilation volume of the fresh air duct G2. The outlet duct of the fresh air fan F2 delivers air to the breeding workshop G via the fresh air duct G2.
[0032] The exhaust gas in the workshop is collected by the collection duct and then sequentially enters the heat exchanger E1, ammonia absorption tower A1, and odor oxidation tower A2. After treatment, it is sent to the exhaust stack D by the deodorization fan F1 for discharge. The deodorization system and the fresh air fan F2 operate continuously to maintain stable temperature, humidity, and odor concentration in the breeding workshop G.
[0033] 1) When the moisture content of the outside gas is greater than the moisture content of the gas at the outlet of the deodorizing fan F1, open the second air valve V2, the third air valve V3, the fifth air valve V5, and the seventh air valve V7, and close the first air valve V1, the fourth air valve V4, and the sixth air valve V6. Start the refrigeration unit B and the condensate pump P. A portion of the air treated by the deodorizing system is mixed with fresh air and enters the heat exchanger E1 for cooling. Then it enters the first-stage dehumidifying heat exchanger E2 for pre-cooling and dehumidification, and the second-stage dehumidifying heat exchanger E3 for condensation and dehumidification. The dehumidified low-temperature gas is then heated by the first-stage dehumidifying heat exchanger E2 and sent to the breeding workshop. The condensate pump P sends the low-temperature water generated by the second-stage dehumidifying heat exchanger E3 into the inlet air duct of the heat exchanger E1 to humidify and cool the air in the duct, thereby increasing the heat transfer power of the heat exchanger E3.
[0034] 2) When the moisture content of the outside gas is less than or equal to the moisture content of the gas exiting the deodorizing fan F1, and the difference in moisture content is no more than 5-20 g / m³, and the outside temperature is greater than the dew point temperature of the exhaust gas discharged from the workshop, open the second air valve V2, the third air valve V3, and the fifth air valve V5, close the first air valve V1, the fourth air valve V4, the sixth air valve V6, and the seventh air valve V7, and start the refrigeration unit B and the condensate pump P; after the fresh air enters the heat exchanger E1 to cool down, it enters the first-stage dehumidifying heat exchanger E2 and the second-stage dehumidifying heat exchanger E3 for condensation and dehumidification. The dehumidified low-temperature gas (the specific temperature of the low-temperature air is 5-20℃) is then heated by the first-stage dehumidifying heat exchanger E2 and sent into the breeding workshop G.
[0035] 3) When the moisture content of the outside gas is less than or equal to the moisture content of the gas exiting the deodorizing fan F1, and the difference in moisture content is no greater than 5 to 20 grams per cubic meter, and the outside temperature is less than or equal to the dew point temperature of the exhaust gas discharged from the workshop, and the temperature difference is no greater than 3 to 10°C, open the third air valve V3 and the sixth air valve V6, close the first air valve V1, the second air valve V2, the fourth air valve V4, the fifth air valve V5, and the seventh air valve V7, start the refrigeration unit B, and stop the condensate pump P; the fresh air directly enters the first-stage dehumidification heat exchanger E2 and the second-stage dehumidification heat exchanger E3 for condensation and dehumidification, and the dehumidified low-temperature gas is then heated by the first-stage dehumidification heat exchanger E2 before being sent to the breeding workshop G.
[0036] 4) When the moisture content of the outside gas is less than or equal to the moisture content of the gas exiting the deodorizing fan F1, and the difference in moisture content is no greater than 5-20 g / m³, and the outside temperature is less than or equal to the dew point temperature of the exhaust gas discharged from the workshop, and the temperature difference is greater than 3-10℃, open the first air valve V1, the fourth air valve V4, and the sixth air valve V6, close the second air valve V2, the third air valve V3, the fifth air valve V5, and the seventh air valve V7, start the refrigeration unit B, and stop the condensate pump P; the fresh air directly enters the first-stage dehumidification heat exchanger E2 and the second-stage dehumidification heat exchanger E3 for condensation and dehumidification, and the dehumidified low-temperature gas is then heated by the first-stage dehumidification heat exchanger E2 and the heat exchanger E1 before being sent into the breeding workshop.
[0037] 5) When the moisture content of the outside gas is less than or equal to the moisture content of the gas exiting the deodorizing fan F1, and the difference in moisture content is greater than 5 to 20 grams per cubic meter, and the outside temperature is less than or equal to the dew point temperature of the exhaust gas discharged from the workshop, and the temperature difference is not greater than 3 to 10°C, open the first air valve V1, the second air valve V2, and the sixth air valve V6, close the third air valve V3, the fourth air valve V4, the fifth air valve V5, and the seventh air valve V7, and stop the refrigeration unit B and the condensate pump P; fresh air directly enters the breeding workshop G.
[0038] 6) When the moisture content of the outside gas is less than or equal to the moisture content of the gas exiting the deodorizing fan F1, and the difference in moisture content is greater than 5 to 20 grams per cubic meter, and the outside temperature is less than or equal to the dew point temperature of the exhaust gas discharged from the workshop, and the temperature difference is greater than 3 to 10°C, open the first air valve V1 and the fifth air valve V5, close the second air valve V2, the third air valve V3, the fourth air valve V4, the sixth air valve V6, and the seventh air valve V7, and stop the refrigeration unit B and the condensate pump P; after the fresh air is heated by the heat exchanger E1, it is sent into the breeding workshop G.
[0039] An existing black soldier fly larvae farm uses kitchen waste slurry with a moisture content of 75% to maintain a temperature of 30-33℃ and a relative humidity of 65%-80% in the breeding workshop. The average annual power consumption for deodorization, temperature control, and dehumidification is 76 kWh / kg of slurry, which is 37%-50% more energy-efficient than conventional deodorization, temperature control, and dehumidification systems that consume 120-150 kWh / kg of slurry. The effect is significant.
[0040] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.
Claims
1. A deodorization, temperature control, and dehumidification system for a high-humidity air environment breeding workshop, comprising: Aquaculture workshop; The breeding workshop includes exhaust gas collection ducts and fresh air ducts; Its features are: The deodorization, temperature control, and dehumidification system for the high-humidity air environment breeding workshop also includes: a deodorization system, an energy recovery system, a fresh air system, and a refrigeration unit; The deodorization system includes: an ammonia absorption tower, an odor oxidation tower, a deodorization fan, an exhaust stack, and a first connecting duct; the ammonia absorption tower, the odor oxidation tower, the deodorization fan, and the exhaust stack are connected sequentially through the first connecting duct. The fresh air system includes: a fresh air filter, a primary dehumidifier and heat exchanger, a secondary dehumidifier and heat exchanger, a fresh air fan, a first air valve, a second air valve, a third air valve, a fourth air valve, a fifth air valve, a sixth air valve, a seventh air valve, and a third connecting duct; the fresh air filter, the primary dehumidifier and heat exchanger, the secondary dehumidifier and heat exchanger, and the fresh air fan are connected through the third connecting duct. The energy recovery system includes a heat exchanger, a second connecting duct, and a condensate pump; an atomizing nozzle is provided between the waste gas collection duct and the second connecting duct; the inlet pipe of the condensate pump is connected to the drain outlet of the secondary dehumidification heat exchanger; the outlet pipe of the condensate pump is connected to the atomizing nozzle; and the heat exchanger is connected to the ammonia absorption tower via the second connecting duct. The refrigeration unit is connected to a two-stage dehumidification heat exchanger; The refrigeration unit includes a low-temperature water pipeline; The refrigeration unit is connected to a secondary dehumidification heat exchanger via a low-temperature water pipeline. The refrigeration unit is used to transport low-temperature water to the secondary dehumidification heat exchanger; The temperature of the low-temperature water is 0-15℃; The third connecting duct is equipped with a control valve, and the ventilation volume of the third connecting duct is 50% to 95% of the ventilation volume of the fresh air duct. The fresh air supply pipe of the fresh air fan delivers fresh air to the breeding workshop.
2. The deodorization, temperature control, and dehumidification system for aquaculture workshops in high-humidity air environments according to claim 1, characterized in that: The air outlet pipe of the fresh air filter is connected to the air outlet pipe of the deodorizing fan via a third connecting air pipe.