High-temperature steam system and method based on waste heat recovery and vinasse recycling

Abstract

The invention provides a high-temperature steam system and method based on waste heat recovery and vinasse recycling, belongs to the technical field of steam systems, and can solve the problems that when an existing steam system is applied to the brewing industry, a large amount of primary energy needs to be consumed, and brewing by-products are not sufficiently utilized. According to the technical scheme, the waste heat recovery assembly comprises a heat exchanger, a high-temperature heat pump unit, a heat storage tank, a high-temperature steam heat pump unit and a condensate water tank; the vinasse recycling assembly comprises a biogas steam boiler, a double-membrane gas holder and an anaerobic bioreactor. According to the system, industrial by-products of a brewing factory can be comprehensively recycled, high-temperature steam required by a boiling process of the brewing factory is provided while secondary steam generated by a boiling pot, low-grade waste heat of the factory and brewing waste are recycled, and the energy utilization efficiency of the system is improved; a novel high-efficiency, low-carbon and energy-saving high-temperature steam system is provided for a brewing factory.

Description

Technical Field

[0001] This invention belongs to the field of steam system technology, and particularly relates to a high-temperature steam system and method for brewing plants based on waste heat recovery and lees resource utilization. Background Technology

[0002] With the development of modern industry, the requirements for industrial steam systems are increasing. Breweries require large amounts of steam in their saccharification and packaging workshops, providing a broad market for steam systems while also posing greater challenges to energy conservation, emission reduction, and resource recovery. Currently, the brewing industry mainly uses gas-fired boilers to generate steam, coupled with flue gas waste heat boilers. This steam system consumes a large amount of primary energy, which is not conducive to energy conservation and emission reduction in factories, and it also underutilizes brewing byproducts, limiting the widespread application of steam systems in low-carbon brewing plants. Therefore, a new type of industrial steam system is needed. Summary of the Invention

[0003] This invention addresses the technical problems of the aforementioned steam systems used in the brewing industry, which consume large amounts of primary energy and fail to fully utilize brewing byproducts. It proposes a high-temperature steam system and method for brewing plants based on waste heat recovery and lees resource utilization. This high-temperature steam system for brewing plants, based on waste heat recovery and lees resource utilization, can comprehensively recover and utilize industrial byproducts from brewing plants. While recovering and utilizing secondary steam generated by the boiling kettle, low-grade waste heat from the plant, and brewing waste, it provides the necessary high-temperature steam for the boiling process of the brewing plant, improving the system's energy efficiency and providing brewing plants with a new type of efficient, low-carbon, and energy-saving high-temperature steam system.

[0004] To achieve the above objectives, the technical solution adopted by this invention is: a high-temperature steam system based on waste heat recovery and distiller's grains resource utilization, comprising... Waste heat recovery components include a heat exchanger; a high-temperature heat pump unit, wherein the first inlet of the high-temperature heat pump unit is connected to the second outlet of the heat exchanger, and the first outlet of the high-temperature heat pump unit is connected to the second inlet of the heat exchanger; a heat storage tank, wherein the first inlet of the heat storage tank is connected to the second outlet of the high-temperature heat pump unit, and the first outlet of the heat storage tank is connected to the second inlet of the high-temperature heat pump unit; a high-temperature steam heat pump unit, wherein the first inlet of the high-temperature steam heat pump unit is connected to the second outlet of the heat storage tank, and the first outlet of the high-temperature steam heat pump unit is connected to the second inlet of the heat storage tank; and a condensate tank, wherein the first outlet of the condensate tank is connected to the third inlet of the high-temperature steam heat pump unit. The components for the resource utilization of distiller's grains include a biogas steam boiler, the first inlet of which is connected to the second outlet of a condensate tank; a double-membrane gas holder, the outlet of which is connected to the second inlet of the biogas steam boiler; and an anaerobic bioreactor, the outlet of which is connected to the inlet of the double-membrane gas holder.

[0005] The waste heat recovery component and the distiller's grains resource utilization component of this invention can be effectively combined and complement each other to fully meet the heat demand of the production process. They can completely replace gas boilers and have high energy utilization efficiency, effectively reducing the consumption of primary energy.

[0006] In one embodiment, the heat exchanger includes one of a shell-and-tube heat exchanger, a plate heat exchanger, and a coaxial heat exchanger.

[0007] In one embodiment, the waste heat recovery assembly further includes an MVR unit, the outlet of which is connected to the second inlet of a high-temperature steam heat pump unit.

[0008] In one embodiment, the high-temperature steam heat pump unit, the high-temperature heat pump unit, and the MVR unit all include one of the following: compression high-temperature steam heat pump, centrifugal high-temperature steam heat pump, absorption high-temperature steam heat pump, cascade high-temperature steam heat pump, and jet heat pump.

[0009] In one embodiment, the high-temperature steam system based on waste heat recovery and distiller's grains resource utilization also includes multiple water pumps, including centrifugal pumps, axial flow pumps, and screw pumps.

[0010] In one embodiment, the high-temperature steam system based on waste heat recovery and distiller's grains resource utilization further includes multiple water pumps, the water pumps including The first water pump is located between the first inlet of the high-temperature heat pump unit and the second outlet of the heat exchanger. The second water pump is located between the first outlet of the high-temperature heat pump unit and the second inlet of the heat exchanger. The third water pump is located between the first inlet of the heat storage tank and the second outlet of the high-temperature heat pump unit. The fourth water pump is located between the first outlet of the heat storage tank and the second inlet of the high-temperature heat pump unit; The fifth water pump is located between the first inlet of the high-temperature steam heat pump unit and the second outlet of the heat storage tank; The sixth water pump is located between the first outlet of the high-temperature steam heat pump unit and the second inlet of the heat storage tank; The seventh water pump is connected to the second outlet of the high-temperature steam heat pump unit; The eighth water pump is located between the first outlet of the condensate tank and the third inlet of the high-temperature steam heat pump unit; The ninth water pump is connected to the first inlet of the condensate tank; The tenth water pump is located between the first inlet of the biogas steam boiler and the second outlet of the condensate tank; The eleventh water pump is connected to the outlet end of the biogas steam boiler.

[0011] In one embodiment, the biogas steam boiler type includes one of an internal combustion biogas boiler and an external combustion biogas boiler.

[0012] In one embodiment, the raw materials in the anaerobic bioreactor include at least one of beer lees, baijiu lees, huangjiu lees, and waste yeast.

[0013] In the technical solution of this invention, brewing waste such as distiller's grains and waste yeast are anaerobic fermented in an anaerobic bioreactor. This process not only produces high-value-added products but also provides clean and stable fuel for biogas steam boilers and clean steam for the brewing process.

[0014] In another aspect, the present invention provides a method for waste heat recovery and distillers' grains resource utilization, applied to the high-temperature steam system based on waste heat recovery and distillers' grains resource utilization as described in any one of claims 1-8, characterized in that the method for waste heat recovery and distillers' grains resource utilization includes the following steps: Waste heat recovery steps: Low-grade waste heat from the factory is condensed and released in a heat exchanger, then cooled in a high-temperature heat pump unit. The resulting low-temperature water is returned to the heat exchanger for heat exchange, and the resulting medium-temperature water is then returned to the high-temperature heat pump unit. Low-temperature stored hot water in the heat storage tank is transferred to the high-temperature heat pump unit for heat exchange, and the resulting high-temperature stored hot water is returned to the heat storage tank. High-temperature stored hot water in the heat storage tank is transferred to a high-temperature steam heat pump unit for heat release, and the resulting low-temperature return water is returned to the heat storage tank. High-temperature condensate stored in the condensate tank is transferred to a high-temperature steam heat pump unit for heat exchange and heat absorption. The resulting high-temperature steam is used to supply the factory, and the condensate from the secondary steam is used for other heating processes in the brewery. Distillery waste resource utilization steps: Distillery waste and waste yeast from the brewery enter the anaerobic bioreactor for anaerobic fermentation. The biogas produced is transported through pipelines to a double-membrane gas holder for buffering. Then, the double-membrane gas holder is transported through pipelines to the biogas steam boiler to provide the fuel required for the boiler to generate steam. The high-temperature condensate stored in the condensate tank enters the biogas steam boiler for heating. The high-temperature steam generated is transported to the factory for production use.

[0015] The waste heat recovery component of this invention is equipped with a heat storage tank for variable heat demand in the waste heat recovery process; the lees resource utilization component is equipped with a double-membrane gas holder for storing biogas for variable heat demand in the lees resource utilization process; the waste heat recovery component supplies gradient heating to the packaging process, and also serves as a supplement to the steam supply gap of the lees resource utilization component, which can meet the variable steam demand in the production process, replace gas boilers, reduce primary energy consumption, and reduce environmental pollution.

[0016] Compared with existing technologies, the advantages and positive effects of this invention are as follows: The high-temperature steam system based on waste heat recovery and distiller's grains resource utilization includes a waste heat recovery component and a distiller's grains resource utilization component. Low-grade waste heat from the factory is released through a heat exchanger in the waste heat recovery component, heating water in a heat storage tank. A high-temperature steam heat pump unit absorbs heat from the hot water in the heat storage tank, heating high-temperature condensate and generating high-temperature steam. The anaerobic bioreactor in the distiller's grains resource utilization component is used for anaerobic fermentation of brewing waste such as distiller's grains. The biogas produced provides fuel for a biogas steam boiler, heating the factory's high-temperature condensate and generating high-temperature steam. The waste heat recovery component and the distiller's grains resource utilization component can be effectively combined and complement each other, fully meeting the heat demand of the production process. It can completely replace gas boilers with high energy efficiency and effectively reduce primary energy consumption. This invention uses a high-temperature steam heat pump unit to provide high-temperature steam to the factory; the unit has good performance and low energy consumption. Attached Figure Description

[0017] Figure 1 A flowchart of a high-temperature steam system based on waste heat recovery and distiller's grains resource utilization provided in an embodiment of the present invention; In the attached diagram, 1 is a heat exchanger, 2 is a high-temperature heat pump unit, 3 is a heat storage tank, 4 is a high-temperature steam heat pump unit, 5 is an MVR unit, 6 is a condensate tank, 7 is a biogas steam boiler, 8 is a double-membrane gas holder, 9 is an anaerobic bioreactor, 101 is the first water pump, 102 is the second water pump, 103 is the third water pump, 104 is the fourth water pump, 105 is the fifth water pump, 106 is the sixth water pump, 107 is the seventh water pump, 108 is the eighth water pump, 109 is the ninth water pump, 110 is the tenth water pump, and 111 is the eleventh water pump. Detailed Implementation

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention relates to a high-temperature steam system for brewing plants based on waste heat recovery and lees resource utilization. It boasts high energy efficiency, effectively reducing primary energy consumption and completely replacing gas-fired boilers. Low-grade waste heat from the plant is released through heat exchanger 1 in the waste heat recovery component, heating the low-temperature stored hot water entering the high-temperature heat pump unit 2 from the heat storage tank 3. The high-temperature steam heat pump unit 4 absorbs heat from the hot water in the heat storage tank 3, heating the condensate from the condensate tank 6 and generating high-temperature steam. The anaerobic bioreactor 9 in the lees resource utilization component is used for the anaerobic fermentation of brewing waste such as lees. The biogas produced by the anaerobic fermentation of lees provides fuel for the biogas steam boiler 7, heating the plant's high-temperature condensate and generating high-temperature steam. The waste heat recovery component and the lees resource utilization component can be effectively combined and complemented to fully meet the heat demand of the brewing plant's production process.

[0020] Reference Appendix Figure 1As shown, this embodiment of the invention provides a high-temperature steam system based on waste heat recovery and distillers' grains resource utilization, including a waste heat recovery component and a distillers' grains resource utilization component. The waste heat recovery component comprehensively recovers and utilizes the secondary steam generated by the boiling pot and other low-grade waste heat in the system, and after upgrading the energy grade, it is used in the brewing process. The distillers' grains resource utilization component can make full use of brewing by-products such as distillers' grains and waste yeast. While producing high-value-added products, it also provides clean and stable biogas fuel for the biogas steam boiler 7, and further provides clean high-temperature steam for the brewing process. The waste heat recovery assembly of this invention includes a heat exchanger 1, with a first inlet connected to low-grade waste heat from a factory and a first outlet for low-temperature discharge water; a high-temperature heat pump unit 2 for upgrading the low-grade waste heat to high-grade hot water, with the first inlet of the high-temperature heat pump unit 2 connected to the second outlet of the heat exchanger 1, and a first water pump 101 installed between the first inlet of the high-temperature heat pump unit 2 and the second outlet of the heat exchanger 1; the first outlet of the high-temperature heat pump unit 2 connected to the second inlet of the heat exchanger 1, and a second water pump 102 installed between the first outlet of the high-temperature heat pump unit 2 and the second inlet of the heat exchanger 1; a heat storage tank 3, with its first inlet connected to the second outlet of the high-temperature heat pump unit 2, and a third water pump 103 installed between the first inlet of the heat storage tank 3 and the second outlet of the high-temperature heat pump unit 2; the first outlet of the heat storage tank 3 connected to the second inlet of the high-temperature heat pump unit 2, and a fourth water pump 104 installed between the first outlet of the heat storage tank 3 and the second inlet of the high-temperature heat pump unit 2; and a high-temperature steam heat pump unit 4. Used to upgrade high-grade hot water to high-temperature steam, the first inlet of the high-temperature steam heat pump unit 4 is connected to the second outlet of the heat storage tank 3, and a fifth water pump 105 is installed between the first inlet of the high-temperature steam heat pump unit 4 and the second outlet of the heat storage tank 3. The first outlet of the high-temperature steam heat pump unit 4 is connected to the second inlet of the heat storage tank 3, and a sixth water pump 106 is installed between the first outlet of the high-temperature steam heat pump unit 4 and the second inlet of the heat storage tank 3. The second outlet of the high-temperature steam heat pump unit 4 is connected to a seventh water pump 107. MVR unit 5, the inlet end of MVR unit 5 is connected to the secondary steam generated by the boiling pot, which raises the temperature of the secondary steam by about 20°C. The outlet end of MVR unit 5 is connected to the second inlet of the high-temperature steam heat pump unit 4. Condensate tank 6, the first outlet of condensate tank 6 is connected to the third inlet of the high-temperature steam heat pump unit 4, and an eighth water pump 108 is installed between the first outlet of condensate tank 6 and the third inlet of the high-temperature steam heat pump unit 4. The first inlet of condensate tank 6 is connected to a ninth water pump 109. The waste recycling component includes a biogas steam boiler 7, whose first inlet is connected to the second outlet of a condensate tank 6, and a tenth water pump 110 is installed between the first inlet of the biogas steam boiler 7 and the second outlet of the condensate tank 6. The outlet of the biogas steam boiler 7 is connected to an eleventh water pump 111. A double-membrane gas holder 8 is connected to the second inlet of the biogas steam boiler 7. An anaerobic bioreactor 9 is connected at one end to the brewing waste and at the other end to the double-membrane gas holder 8. The brewing waste is processed by the anaerobic bioreactor 9 to produce high-value-added products and biogas. The high-value-added products include plant protein, yeast extract, etc. The biogas enters the biogas steam boiler 7 through the double-membrane gas holder 8 for use as fuel.

[0021] In a preferred embodiment of the present invention, the heat exchanger 1 includes one of the following: shell and tube heat exchanger 1, plate heat exchanger 1, and coaxial heat exchanger 1.

[0022] In a preferred embodiment of the present invention, the high-temperature steam heat pump unit 4, the high-temperature heat pump unit 2, and the MVR unit 5 all include one of the following: compression high-temperature steam heat pump, centrifugal high-temperature steam heat pump, absorption high-temperature steam heat pump, cascade high-temperature steam heat pump, and jet heat pump.

[0023] In a preferred embodiment of the present invention, the refrigerant of the high-temperature steam heat pump unit 4, the high-temperature heat pump unit 2, and the MVR unit 5 all include one of R744, R717, R134a, R245fa, and R1233zd.

[0024] In a preferred embodiment of the present invention, the brewing waste entering the anaerobic bioreactor 9 includes at least one of beer lees, baijiu lees, huangjiu lees, and waste yeast.

[0025] In a preferred embodiment of the present invention, the biogas steam boiler 7 type includes one of an internal combustion biogas boiler and an external combustion biogas boiler.

[0026] In a preferred embodiment of the present invention, the first water pump 101, the second water pump 102, the third water pump 103, the fourth water pump 104, the fifth water pump 105, the sixth water pump 106, the seventh water pump 107, the eighth water pump 108, the ninth water pump 109, the tenth water pump 110, and the eleventh water pump 111 all include one of the following: centrifugal pump, axial flow pump, and screw pump.

[0027] The method for waste heat recovery and distiller's grains resource utilization of this invention includes: Waste heat recovery steps: Start the first water pump 101 and the second water pump 102. The exhaust heat from the factory system with a temperature ≤45℃ is condensed and released in the heat exchanger 1. After being cooled by the first water pump 101, the low-temperature water is returned to the heat exchanger 1 by the second water pump 102 for heat exchange. The medium-temperature water obtained after heat exchange is then returned to the high-temperature heat pump unit 2 by the first water pump 101. When the third water pump 103 and the fourth water pump 104 are turned on, the low-temperature hot water from the heat storage tank 3 enters the high-temperature heat pump unit 2 through the fourth water pump 104 for heat exchange, and the high-temperature hot water obtained after heat exchange returns to the heat storage tank 3 through the third water pump 103. The fifth water pump 105, the sixth water pump 106, the seventh water pump 107, the eighth water pump 108 and the ninth water pump 109 are turned on. The high-temperature stored hot water from the heat storage tank 3 enters the evaporator of the high-temperature steam heat pump unit 4 through the fifth water pump 105 to release heat. The low-temperature return water obtained after releasing heat returns to the heat storage tank 3 through the sixth water pump 106. The high-temperature condensate obtained after the high-temperature steam is condensed after heat exchange with the brewing equipment is stored in the condensate tank 6 by the ninth water pump 109. Since the secondary steam cannot meet the grade requirements of high-temperature steam after being compressed and heated by the MVR unit 5, it is used as a heat source to preheat the condensate entering the high-temperature steam heat pump unit 4 through the eighth water pump 108, thereby improving the heating efficiency ratio (COP) of the high-temperature steam heat pump unit 4. The condensate then enters the condenser of the high-temperature steam heat pump unit 4 to absorb heat. The generated high-temperature steam is supplied to the factory for use by the seventh water pump 107. Since the secondary steam contains a large amount of wort evaporation substances, it cannot enter the condensate system. The condensate generated after the secondary steam is condensed is used for other heating processes in the brewing factory. The process of recycling distiller's grains: Pumps 109, 110, and 111 are turned on, and the distiller's grains and waste yeast from the brewery enter the anaerobic bioreactor 9 for anaerobic fermentation, producing high-value-added products and biogas. The high-value-added products can be further processed and sold on the market. The biogas produced enters the double-membrane gas holder 8 through a pipeline for buffering, and then enters the biogas steam boiler 7 through a pipeline to provide the fuel required for the boiler to generate steam. At the same time, the high-temperature condensate is stored in the condensate tank 6 by pump 109, and then enters the biogas steam boiler 7 through pump 110 to be heated. The high-temperature steam generated is delivered to the factory through pump 111.

[0028] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, alterations, evolutions, or improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope of the present invention.

Claims

1. A high-temperature steam system based on waste heat recovery and distiller's grains resource utilization, characterized in that, include Waste heat recovery components include a heat exchanger; a high-temperature heat pump unit, wherein the first inlet of the high-temperature heat pump unit is connected to the second outlet of the heat exchanger, and the first outlet of the high-temperature heat pump unit is connected to the second inlet of the heat exchanger; a heat storage tank, wherein the first inlet of the heat storage tank is connected to the second outlet of the high-temperature heat pump unit, and the first outlet of the heat storage tank is connected to the second inlet of the high-temperature heat pump unit; a high-temperature steam heat pump unit, wherein the first inlet of the high-temperature steam heat pump unit is connected to the second outlet of the heat storage tank, and the first outlet of the high-temperature steam heat pump unit is connected to the second inlet of the heat storage tank; and a condensate tank, wherein the first outlet of the condensate tank is connected to the third inlet of the high-temperature steam heat pump unit. The components for the resource utilization of distiller's grains include a biogas steam boiler, the first inlet of which is connected to the second outlet of a condensate tank; a double-membrane gas holder, the outlet of which is connected to the second inlet of the biogas steam boiler; and an anaerobic bioreactor, the outlet of which is connected to the inlet of the double-membrane gas holder.

2. The high-temperature steam system based on waste heat recovery and distiller's grains resource utilization according to claim 1, characterized in that, Heat exchangers include one of the following: shell and tube heat exchangers, plate heat exchangers, and double-tube heat exchangers.

3. The high-temperature steam system based on waste heat recovery and distiller's grains resource utilization according to claim 1, characterized in that, The waste heat recovery system also includes an MVR unit, the outlet of which is connected to the second inlet of the high-temperature steam heat pump unit.

4. The high-temperature steam system based on waste heat recovery and distiller's grains resource utilization according to claim 3, characterized in that, High-temperature steam heat pump units, high-temperature heat pump units, and MVR units all include one of the following: compression high-temperature steam heat pumps, centrifugal high-temperature steam heat pumps, absorption high-temperature steam heat pumps, cascade high-temperature steam heat pumps, and jet heat pumps.

5. The high-temperature steam system based on waste heat recovery and distiller's grains resource utilization according to claim 1, characterized in that, The high-temperature steam system based on waste heat recovery and distiller's grains resource utilization also includes multiple water pumps, including centrifugal pumps, axial flow pumps, and screw pumps.

6. The high-temperature steam system based on waste heat recovery and distiller's grains resource utilization according to claim 1, characterized in that, The high-temperature steam system based on waste heat recovery and distiller's grains resource utilization also includes multiple water pumps, including... The first water pump is located between the first inlet of the high-temperature heat pump unit and the second outlet of the heat exchanger. The second water pump is located between the first outlet of the high-temperature heat pump unit and the second inlet of the heat exchanger. The third water pump is located between the first inlet of the heat storage tank and the second outlet of the high-temperature heat pump unit. The fourth water pump is located between the first outlet of the heat storage tank and the second inlet of the high-temperature heat pump unit; The fifth water pump is located between the first inlet of the high-temperature steam heat pump unit and the second outlet of the heat storage tank; The sixth water pump is located between the first outlet of the high-temperature steam heat pump unit and the second inlet of the heat storage tank; The seventh water pump is connected to the second outlet of the high-temperature steam heat pump unit; The eighth water pump is located between the first outlet of the condensate tank and the third inlet of the high-temperature steam heat pump unit; The ninth water pump is connected to the first inlet of the condensate tank; The tenth water pump is located between the first inlet of the biogas steam boiler and the second outlet of the condensate tank; The eleventh water pump is connected to the outlet end of the biogas steam boiler.

7. The high-temperature steam system based on waste heat recovery and distiller's grains resource utilization according to claim 1, characterized in that, Biogas steam boilers include one of the following types: internal combustion biogas boilers and external combustion biogas boilers.

8. The high-temperature steam system based on waste heat recovery and distiller's grains resource utilization according to claim 1, characterized in that, The raw materials in the anaerobic bioreactor include at least one of beer lees, baijiu lees, huangjiu lees, and waste yeast.

9. A method for waste heat recovery and distiller's grains resource utilization, applied to the high-temperature steam system based on waste heat recovery and distiller's grains resource utilization as described in any one of claims 1-8, characterized in that, The methods for waste heat recovery and distillers' grains resource utilization include the following steps: Waste heat recovery steps: Low-grade waste heat from the factory is condensed and released in a heat exchanger, then cooled in a high-temperature heat pump unit. The resulting low-temperature water is returned to the heat exchanger for heat exchange, and the resulting medium-temperature water is then returned to the high-temperature heat pump unit. Low-temperature stored hot water in the heat storage tank is transferred to the high-temperature heat pump unit for heat exchange, and the resulting high-temperature stored hot water is returned to the heat storage tank. High-temperature stored hot water in the heat storage tank is transferred to a high-temperature steam heat pump unit for heat release, and the resulting low-temperature return water is returned to the heat storage tank. High-temperature condensate stored in the condensate tank is transferred to a high-temperature steam heat pump unit for heat exchange and heat absorption. The resulting high-temperature steam is used to supply the factory, and the condensate from the secondary steam is used for other heating processes in the brewery. Distillery waste resource utilization steps: Distillery waste and waste yeast from the brewery enter the anaerobic bioreactor for anaerobic fermentation. The biogas produced is transported through pipelines to a double-membrane gas holder for buffering. Then, the double-membrane gas holder is transported through pipelines to the biogas steam boiler to provide the fuel required for the boiler to generate steam. The high-temperature condensate stored in the condensate tank enters the biogas steam boiler for heating. The high-temperature steam generated is transported to the factory for production use.

Images