Low-temperature high-pressure distillation equipment for brewing wastewater

Abstract

The present application relates to the technical field of liquor wastewater treatment equipment, and particularly relates to a low-temperature high-pressure distillation equipment for liquor wastewater, which comprises a distillation device and a pressurizing device, the output end of the pressurizing device is connected with the distillation device through a gas guide pipe, the upper end of the distillation device is provided with a feeding port and a gas outlet pipe, and a heat exchanger connected with the gas outlet pipe is arranged on the support; a filter cartridge is arranged between the gas outlet pipe and the distillation device, a filter screen is arranged in the filter cartridge, and a back pressure structure is arranged in the filter cartridge; the distillation device is pressurized through the pressurizing device, the pressure inside the distillation device is increased, low-temperature heating is performed, low-temperature distillation is realized, the liquor wastewater is concentrated, the concentrated liquor wastewater can be used as waste material to be returned to the field, the distillate can be used as fuel for sale, and the methane in the liquor wastewater is avoided from being directly discharged, so that the environment is avoided from being polluted.

Description

Technical Field

[0001] This invention relates to the field of brewing wastewater treatment equipment, and in particular to a low-temperature high-pressure distillation device for brewing wastewater. Background Technology

[0002] Wastewater from the brewing industry contains a large amount of organic matter, abundant nutrients, and potential energy. If this wastewater is discharged directly into natural water bodies without treatment, it will not only cause serious waste of resources but may also lead to eutrophication. Eutrophication can cause excessive algae growth in water bodies, thereby affecting water quality and disrupting the ecological balance. Therefore, proper treatment of wastewater from the brewing industry is essential. In the wastewater treatment process, treating wastewater with wastewater treatment equipment can bring significant economic benefits to enterprises, such as reducing wastewater treatment costs, reducing resource waste, and improving production efficiency.

[0003] Currently, the mainstream anaerobic reactors in the liquor industry, such as UASB and IC reactors, produce a large amount of methane gas during operation. The short-term greenhouse effect caused by methane emissions is 80 times that of CO2, and the long-term greenhouse effect is 30 times that of CO2, resulting in significant environmental pollution. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the generation of large amounts of methane gas during the operation of anaerobic reactors, which causes significant environmental pollution. The invention proposes a low-temperature, high-pressure distillation device for brewing wastewater.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a low-temperature high-pressure distillation device for brewing wastewater, including a distillation device and a pressurization device. The output end of the pressurization device is connected to the distillation device through a gas guide pipe. The upper end of the distillation device is provided with a feed inlet and a gas outlet pipe. The distillation device is mounted on a support.

[0007] The support is provided with a heat exchanger connected to the air outlet pipe, and the heat exchanger is provided with a liquid outlet and an air outlet.

[0008] A filter cylinder is provided between the gas outlet pipe and the distillation device. A filter screen is provided inside the filter cylinder, and a back pressure structure is provided inside the filter cylinder.

[0009] Furthermore, the back pressure structure includes a sealing part fixedly disposed inside the filter cylinder, the upper end of the sealing part having an abutment groove, and a sealing block disposed on the abutment groove.

[0010] Furthermore, a support plate is fixedly installed inside the filter cartridge, a spring is installed between the support plate and the sealing block, the sealing block abuts against the contact groove to form a sealing structure, and a guide post is fixedly installed on the sealing block, the guide post being movably inserted into the support plate.

[0011] Furthermore, an installation ring that cooperates with the filter screen is fixedly provided inside the filter cylinder. The filter screen has a conical structure with its tip pointing upwards.

[0012] Furthermore, the inner wall of the mounting ring is provided with a ring groove, and the filter screen is provided with a plurality of clips that cooperate with the ring groove around its circumference.

[0013] Furthermore, the locking component includes an elastic plate and a protrusion fixedly disposed on the outer wall of the elastic plate, the protrusion engaging with the annular groove.

[0014] Furthermore, the filter cylinder is provided with a collection structure that cooperates with the filter screen to collect filter waste residue, and the filter cylinder is provided with a waste discharge pipe that cooperates with the collection structure, and the waste discharge pipe is provided with a valve.

[0015] Furthermore, the collection structure includes a collection ring that cooperates with the waste discharge pipe, and the upper end of the collection ring is provided with a guide portion that cooperates with the filter screen.

[0016] Furthermore, a connecting pipe with a flange is fixedly installed on the distillation apparatus, and a flange that mates with the connecting pipe is fixedly installed on the filter cylinder. The flange of the filter cylinder and the flange of the connecting pipe are connected by bolts and nuts.

[0017] Furthermore, a support ring is fixedly provided on the inner wall of the connecting pipe, and a support portion that contacts the support ring is fixedly provided at the bottom of the collecting ring.

[0018] The low-temperature high-pressure distillation equipment for brewing wastewater proposed in this invention has the following advantages:

[0019] In this invention, a pressurizing device is set up to pressurize the distillation device, thereby increasing the internal pressure of the distillation device. Then, low-temperature heating is used to achieve low-temperature boiling distillation, which concentrates the brewing wastewater. The concentrated brewing wastewater can be returned to the field as waste, while the distillate can be used and sold as fuel, thus avoiding the direct discharge of methane from the brewing wastewater and thus avoiding environmental pollution.

[0020] Secondly, in this invention, by setting a back pressure structure, when the internal pressure of the distillation device is less than the preset pressure of the back pressure structure, the sealing block and the contact groove of the sealing part abut against each other to form a sealing structure, preventing gas leakage inside the distillation device. When the internal pressure of the distillation device is greater than the preset pressure of the back pressure structure, the sealing block and the contact groove of the sealing part separate to form a passage, allowing the gas inside the distillation device to be discharged and condensed to form distillate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a low-temperature high-pressure distillation device for brewing wastewater proposed in this invention;

[0022] Figure 2 This is a schematic diagram of the enlarged structure of region A of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the filter cartridge of the present invention;

[0024] Figure 4 This is a schematic diagram of the enlarged structure of region B of the present invention;

[0025] Figure 5 This is a schematic diagram of the enlarged structure of region C of the present invention.

[0026] In the diagram: 1. Distillation apparatus; 11. Connecting pipe; 12. Support ring; 2. Pressurizing device; 3. Gas guide pipe; 4. Gas outlet pipe; 5. Support; 6. Heat exchanger; 61. Liquid outlet; 62. Gas outlet; 7. Filter cylinder; 71. Filter screen; 72. Mounting ring; 73. Ring groove; 74. Clip; 741. Elastic plate; 742. Protrusion; 75. Waste discharge pipe; 8. Back pressure structure; 81. Sealing part; 82. Sealing block; 83. Support plate; 84. Spring; 85. Guide column; 9. Collection structure; 91. Collection ring. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Reference Figure 1-5 A low-temperature high-pressure distillation device for brewing wastewater includes a distillation device 1 and a pressurizing device 2. The output end of the pressurizing device 2 is connected to the distillation device 1 through a gas guide pipe 3. The upper end of the distillation device 1 is provided with a feed inlet and a gas outlet pipe 4. The distillation device 1 is mounted on a support 5.

[0029] A heat exchanger 6 connected to the air outlet pipe 4 is provided on the bracket 5. The heat exchanger 6 is provided with a liquid outlet 61 and an air outlet 62.

[0030] A filter cylinder 7 is installed between the gas outlet pipe 4 and the distillation device 1. A filter screen 71 is installed inside the filter cylinder 7, and a back pressure structure 8 is installed inside the filter cylinder 7.

[0031] In this invention, the pressure inside the distillation apparatus 1 is increased by pressurizing device 2, and then low-temperature boiling distillation is achieved through low-temperature heating, preferably at 38 degrees Celsius, to concentrate the brewing wastewater. The concentrated brewing wastewater can be returned to the fields as waste, while the distillate can be used and sold as fuel, avoiding the direct discharge of methane from the brewing wastewater and thus preventing environmental pollution. Furthermore, no additional slurry is required when treating the brewing wastewater, reducing costs. The COD equivalent of the distillate can reach over 200,000 mg / L and can be used and sold as fuel. During brewing, approximately 20 tons of combined wastewater are generated for every ton of wine brewed, with the highest concentration in the bottom water of the cellar. According to the crushed sand process, the COD concentration is approximately 200,000 mg / L, which is equivalent to... If one ton of water contains 200 kg of COD, degrading one ton of such wastewater through anaerobic reaction is equivalent to indirectly releasing 70 m3 of methane gas, or approximately 0.71 kg of methane gas per cubic meter. Based on the greenhouse effect, this is equivalent to emitting 1.4 tons of carbon dioxide. Considering that burning one ton of standard coal produces approximately 2.7 tons of carbon dioxide, treating one ton of bottom water with a concentration of approximately 200,000 mg / L results in a greenhouse effect equivalent to burning 0.5 tons of coal. Similarly, burning one ton of standard coal produces approximately 2.7 tons of carbon dioxide. After distilling the brewing wastewater using the low-temperature, high-pressure distillation equipment of this invention, the distilled organic concentrate is dried and then fermented to form fertilizer.

[0032] Furthermore, in this embodiment, the back pressure structure 8 includes a sealing part 81 fixedly disposed inside the filter cylinder 7. The upper end of the sealing part 81 is provided with an abutment groove, and a sealing block 82 is disposed on the abutment groove. Under the action of gravity, the sealing block 82 abuts against the abutment groove to form a sealing structure, thereby preventing gas leakage inside the distillation device 1.

[0033] In this embodiment, a support plate 83 is fixedly installed inside the filter cylinder 7. A spring 84 is installed between the support plate 83 and the sealing block 82. The sealing block 82 abuts against the contact groove to form a sealing structure. A guide post 85 is fixedly installed on the sealing block 82. The guide post 85 is movably inserted into the support plate 83. By setting the spring 84, the contact force between the sealing block 82 and the contact groove is increased, thereby increasing the pressure required for the sealing block 82 to move upward.

[0034] Furthermore, in this embodiment, a mounting ring 72 that cooperates with the filter screen 71 is fixedly provided inside the filter cylinder 7. The filter screen 71 has a conical structure with its tip pointing upwards. When steam passes through the filter screen 71, it will be filtered to remove large particles. In addition, some steam will form liquid when passing through the filter screen 71 and slowly flow down along the top tip of the filter screen 71, thereby driving the filtered particles downwards and away from the filter screen 71 to avoid clogging the filter screen 71.

[0035] In this embodiment, the inner wall of the mounting ring 72 is provided with a ring groove 73, and the filter screen 71 is provided with a plurality of clips 74 that cooperate with the ring groove 73. The filter screen 71 is engaged with the mounting ring 72 by the clips 74, and the filter screen 71 can be removed for cleaning and replacement. The filter screen 71 is also provided with a limiting ring that cooperates with the mounting ring 72 to prevent the filter screen 71 from being over-installed and misaligned with the mounting ring 72.

[0036] It should be noted that, in this embodiment, the clip 74 includes an elastic plate 741 and a protrusion 742 fixedly disposed on the outer wall of the elastic plate 741. The protrusion 742 engages with the annular groove 73. During installation, the protrusion 742 abuts against the inner wall of the mounting ring 72, causing the elastic plate 741 to undergo elastic deformation. When the protrusion 742 moves to the annular groove 73, the protrusion 742 is not squeezed, and the elastic plate 741 returns to its original shape. The protrusion 742 engages with the annular groove 73, thereby fixing the filter screen 71.

[0037] In this embodiment, the filter cylinder 7 is provided with a collection structure 9 that cooperates with the filter screen 71 to collect filter waste residue. The filter cylinder 7 is provided with a waste discharge pipe 75 that cooperates with the collection structure 9. The waste discharge pipe 75 is provided with a valve. The collection structure 9 is used to collect liquid containing particulate matter flowing down the filter screen 71 and periodically discharge the liquid along the waste discharge pipe 75.

[0038] Furthermore, in this embodiment, the collection structure 9 includes a collection ring 91 that cooperates with the waste discharge pipe 75. The upper end of the collection ring 91 is provided with a guide portion that cooperates with the filter screen 71. The guide portion collects the liquid dripping from the filter screen 71 and can temporarily store the liquid.

[0039] In this embodiment, a connecting pipe 11 with a flange is fixedly installed on the distillation apparatus 1, and a flange that mates with the connecting pipe 11 is fixedly installed on the filter cylinder 7. The flange of the filter cylinder 7 is connected to the flange of the connecting pipe 11 by bolts and nuts. The filter cylinder 7 can be removed for cleaning and replacement by unscrewing the nuts and taking out the bolts.

[0040] More specifically, a support ring 12 is fixedly provided on the inner wall of the connecting pipe 11, and a support part that contacts the support ring 12 is fixedly provided at the bottom of the collecting ring 91. By setting the support part and the support ring 12 to cooperate, the collecting ring 91 is supported and limited to prevent it from falling off, and at the same time, it is convenient to remove the collecting ring 91 for cleaning and replacement.

[0041] Working method: During operation, the pressure inside the distillation device 1 is increased by pressurizing device 2, and then low-temperature boiling distillation is achieved by low-temperature heating to concentrate the brewing wastewater. The concentrated brewing wastewater can be returned to the field as waste, while the steam is condensed by heat exchanger 6 to form distillate, which can be sold as fuel.

[0042] During distillation, the sealing block 82 abuts against the contact groove under the action of gravity to form a sealing structure, and the spring 84 increases the contact force between the sealing block 82 and the contact groove, thereby increasing the pressure required for the sealing block 82 to move upward. When the internal pressure of the distillation device 1 is less than the preset pressure of the back pressure structure 8, the sealing block 82 abuts against the contact groove of the sealing part 81 to form a sealing structure, preventing gas leakage inside the distillation device 1. When the internal pressure of the distillation device 1 is greater than the preset pressure of the back pressure structure 8, the sealing block 82 separates from the contact groove of the sealing part 81 to form a passage, allowing the gas inside the distillation device to be discharged and condensed to form distillate.

[0043] When steam passes through filter screen 71, large particles are filtered out. Some of the steam forms liquid as it passes through filter screen 71 and flows slowly down the top tip of filter screen 71, thereby carrying the filtered particles downward away from filter screen 71 to avoid clogging filter screen 71. The liquid containing particles flowing down along filter screen 71 is collected by collection structure 9 and the liquid is periodically discharged through waste pipe 75.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A low-temperature high-pressure distillation apparatus for brewery wastewater, comprising a distillation device (1) and a pressurizing device (2), characterized in that, The output end of the pressurizing device (2) is connected to the distillation device (1) through the gas guide pipe (3). The upper end of the distillation device (1) is provided with a feed inlet and a gas outlet pipe (4). The distillation device (1) is mounted on a support (5). The bracket (5) is provided with a heat exchanger (6) connected to the air outlet pipe (4), and the heat exchanger (6) is provided with a liquid outlet (61) and an air outlet (62). A filter cylinder (7) is provided between the gas outlet pipe (4) and the distillation device (1), a filter screen (71) is provided inside the filter cylinder (7), and a back pressure structure (8) is provided inside the filter cylinder (7). The back pressure structure (8) includes a sealing part (81) fixedly disposed inside the filter cylinder (7), and an abutment groove is provided at the upper end of the sealing part (81), and a sealing block (82) is provided on the abutment groove. A support plate (83) is fixedly installed inside the filter cylinder (7). A spring (84) is installed between the support plate (83) and the sealing block (82). The sealing block (82) abuts against the contact groove to form a sealing structure. A guide post (85) is fixedly installed on the sealing block (82). The guide post (85) is movably inserted into the support plate (83). The filter cylinder (7) is fixedly provided with an installation ring (72) that cooperates with the filter screen (71). The filter screen (71) has a conical structure with its tip pointing upwards. The filter cylinder (7) is provided with a collection structure (9) that cooperates with the filter screen (71) for collecting filter waste residue. The filter cylinder (7) is provided with a waste discharge pipe (75) that cooperates with the collection structure (9). The waste discharge pipe (75) is provided with a valve. The collection structure (9) includes a collection ring (91) that cooperates with the waste pipe (75), and the upper end of the collection ring (91) is provided with a guide part that cooperates with the filter screen (71); The inner wall of the mounting ring (72) is provided with a ring groove (73), and the filter screen (71) is provided with a plurality of clips (74) that cooperate with the ring groove (73) around its circumference. The clip (74) includes an elastic plate (741) and a protrusion (742) fixedly disposed on the outer wall of the elastic plate (741), the protrusion (742) engaging with the annular groove (73); The distillation apparatus (1) is fixedly provided with a connecting pipe (11) having a flange, and the filter cylinder (7) is fixedly provided with a flange that cooperates with the connecting pipe (11). The flange of the filter cylinder (7) and the flange of the connecting pipe (11) are connected by bolts and nuts. The inner wall of the connecting pipe (11) is fixedly provided with a support ring (12), and the bottom of the collecting ring (91) is fixedly provided with a support part that contacts the support ring (12).

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