Waste heat steam efficient filtering structure

Abstract

The utility model discloses a waste heat steam efficient filtration structure relates to waste gas treatment technical field. The utility model discloses a condensation cooling filter assembly, and the air outlet of condensation cooling filter assembly is connected with filter core filter assembly. The utility model discloses the synergic design of condensation cooling filter assembly and filter core filter assembly, realizes the efficient removal of moisture, peculiar smell component and solid impurity in waste heat steam, in condensation cooling filter assembly, high temperature waste heat steam first after the flow of guide vane guide extension its flow time, and the heat exchange of circulating cooling water in the serpentine cooling pipe, make most water vapor condense as liquid water, along the inclined plate through the drain pipe and export, while preliminary interception volatile organic compounds, and the cold air of synchronous introduction enters the heat exchange pipe through the flow divider, absorbs the waste heat steam after waste heat and dehydrates the odor of exhaust gas in the air pipe mixing, through the promotion exhaust gas temperature reduction relative humidity, eliminate the " white smoke " phenomenon from the root cause that the water vapor condenses.

Description

Technical Field

[0001] This utility model belongs to the field of waste gas treatment technology, and in particular relates to a high-efficiency filtration structure for waste heat steam. Background Technology

[0002] In the liquor brewing industry, the steaming of grains and bran is one of the core production processes, generating a large amount of high-temperature waste heat steam. This waste heat steam not only contains a large amount of water vapor, but also volatile organic compounds such as ethanol, organic acids, and esters, as well as solid particulate impurities. Direct emission of this steam will lead to significant odor and visual pollution, seriously affecting the quality of the surrounding environment. Furthermore, if the large amount of residual heat contained in the waste heat steam is not effectively utilized, it will result in energy waste and increase the company's production energy costs.

[0003] Currently, the main problems with the treatment of waste heat steam from grain and bran steaming in the liquor industry are as follows: First, traditional condensation devices can only remove some moisture from the waste heat steam, and their effect on removing volatile organic compounds is limited, making it difficult to completely eliminate odors; second, the residual heat in the waste heat steam is not recovered and utilized, resulting in additional energy consumption in subsequent treatment stages; third, there is a lack of effective means to control the "white smoke" phenomenon in waste heat steam emissions. "White smoke" is essentially a group of droplets formed by the condensation of high-humidity water vapor in the waste heat steam upon cooling. Existing technologies typically only use simple cooling to reduce the temperature, which cannot fundamentally solve the visual pollution problem caused by high humidity in the exhaust gas. The white smoke phenomenon is particularly pronounced in winter or low-temperature environments, becoming a major obstacle to achieving environmental compliance in the industry.

[0004] Baijiu (Chinese liquor) enterprises have placed higher demands on waste heat steam treatment technology: not only do they need to efficiently remove moisture and odor components from the waste heat steam, but they also need to achieve resource utilization of waste heat while completely eliminating white smoke to meet smokeless emission requirements. To address these issues, we offer a high-efficiency waste heat steam filtration structure. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency waste heat steam filtration structure. By combining the condensation filtration component and the filter element filtration component, it solves the problem that the existing waste heat steam filtration structure cannot achieve low-energy consumption and smokeless waste discharge.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a high-efficiency waste heat steam filtration structure, comprising a condensation cooling filtration assembly. The outlet of the condensation cooling filtration assembly is connected to a filter element filtration assembly. The condensation cooling filtration assembly includes a housing, with an inlet pipe and an outlet pipe connected to its front and rear ends respectively. A guide plate is fixedly connected to the inner cavity of the housing. An air connection pipe is connected to the top of one side of the housing. A distribution box is fixedly connected to the inner cavity of the housing and is connected to the air connection pipe. A heat exchange pipe is connected to the other side of the distribution box, and a central box is connected to the other end of the heat exchange pipe. The front end of the central box extends into the inner cavity of the outlet pipe. A tee pipe is connected to the top of the back of the housing, and the bottom of the tee pipe extends into the inner cavity of the housing and is connected to a cooling pipe. The filter element filtration assembly includes a filter tube bolted to the surface of the outlet pipe. A filter element is installed inside the filter tube, and a dustproof mesh is threaded onto the surface of the filter tube.

[0008] The present invention is further configured such that an air inlet is provided at the bottom of one side of the back of the box, and an air outlet is provided at the bottom of one side of the front of the box. The air inlet and the air outlet are arranged at a low position to promote the natural settling of condensate by gravity and avoid gas-liquid backflow that would affect the processing efficiency.

[0009] The present invention is further configured such that a flange is fixedly connected to the end of the air inlet pipe and the air outlet pipe away from the housing. The air inlet pipe is connected to the exhaust gas pipe through the flange. The flange connection method supports quick disassembly and assembly of the equipment and pipe adaptation, meeting the needs of parallel processing of multiple equipment in the production line.

[0010] The present invention is further configured such that an inclined plate is fixedly connected to the bottom of the inner cavity of the box, and a drain pipe is connected to the bottom of the inclined plate. The drain pipe is designed to be inclined, and the inclined plate and the inclined drain pipe form a liquid guiding structure without dead angles, ensuring the discharge of condensate and preventing internal corrosion of the equipment.

[0011] The present invention is further configured such that the cooling pipe is located on the front and rear sides of the inner cavity of the box, and the heat exchange pipe is located between the front and rear cooling pipes. The symmetrical distribution of the cooling pipe and the heat exchange pipe forms a "cold and hot jacket" structure, which improves the uniformity of heat exchange between waste heat steam and air.

[0012] The present invention is further configured such that the cooling pipe and the heat exchange pipe are designed in a serpentine shape. The serpentine pipe design increases the effective heat exchange length by more than 3 times. Combined with the turbulence-induced structure, the heat exchange coefficient is greatly improved.

[0013] The present invention is further configured such that a limiting ring is fixedly connected to the rear end of the inner cavity of the filter tube, and a fixing ring is fixedly connected to the inner wall of the dustproof net. The fixing ring is in contact with the surface of the filter element. The conical sealing structure of the limiting ring and the fixing ring ensures the airtightness of the filter element during installation, and facilitates quick one-handed replacement operation.

[0014] The present invention is further configured such that the drain pipe discharges the waste liquid into an external wastewater filtration device, and the purified water is connected to the top inlet of the three-way pipe through an external water pump. The condensate circulation system realizes the reuse of water resources and reduces wastewater discharge.

[0015] The present invention has the following beneficial effects.

[0016] 1. This utility model achieves efficient removal of moisture, odor components, and solid impurities from waste heat steam through the synergistic design of the condensation cooling filter assembly and the filter element filter assembly. In the condensation cooling filter assembly, the high-temperature waste heat steam is first guided by the guide plate to extend its flow time and exchange heat with the circulating cooling water in the serpentine cooling pipe, causing most of the water vapor to condense into liquid water, which is discharged through the drain pipe along the inclined plate. At the same time, volatile organic compounds are initially intercepted. The cold air introduced at the same time enters the heat exchange tube through the distribution box, absorbs the residual heat of the waste heat steam and is heated up, and then mixes with the dehydrated and deodorized waste gas in the outlet pipe. By increasing the temperature of the waste gas and reducing the relative humidity, the "white smoke" phenomenon caused by water vapor condensation is eliminated from the source. The multi-layer composite filter element of the filter element filter assembly can further adsorb residual ethanol, esters and other odor substances and fine particles, ensuring that the emitted waste gas meets the environmental protection standards of no odor and no white smoke.

[0017] 2. This utility model's condensation cooling filter assembly uses a flange to connect the exhaust gas pipe, which can be quickly adapted to the exhaust gas emission system of existing grain steaming and bran steaming equipment. The serpentine heat exchange tube and cooling tube design maximizes the heat exchange area within a limited space. The filter element is connected to the exhaust pipe by bolts, and the dust screen can be rotated and disassembled. With the snap-fit ​​design of the limiting ring and fixing ring, the filter element can be quickly replaced, avoiding the problem of reduced treatment efficiency due to organic matter blockage. The inclined design of the drain pipe and the external water pump circulation system form an automatic condensate recovery and utilization loop. The overall modular design not only meets the multi-condition waste heat steam treatment needs of the liquor industry, but also reduces the equipment installation and maintenance costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a three-dimensional diagram of a high-efficiency filter structure for waste heat steam.

[0020] Figure 2 This is a right-side schematic diagram of a high-efficiency filter structure for waste heat steam.

[0021] Figure 3 This is a top-view cross-sectional schematic diagram of a high-efficiency filter structure for waste heat steam.

[0022] Figure 4This is a front sectional view of a high-efficiency filter structure for waste heat steam.

[0023] Figure 5 This is a side sectional view of a high-efficiency filter structure for waste heat steam.

[0024] In the attached diagram: 1. Condensation cooling filter assembly; 11. Housing; 12. Inlet pipe; 13. Outlet pipe; 14. Baffle plate; 15. Air connection pipe; 16. Distribution box; 17. Heat exchange tube; 18. Central box; 19. T-shaped pipe; 110. Cooling pipe; 111. Inclined plate; 112. Drain pipe; 2. Filter element filter assembly; 21. Filter tube; 22. Filter element; 23. Dustproof net. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figure 1-5 This utility model is a high-efficiency filtration structure for waste heat steam, including a condensation cooling filter assembly 1. The outlet of the condensation cooling filter assembly 1 is connected to a filter element assembly 2. The condensation cooling filter assembly 1 includes a housing 11, with an inlet pipe 12 and an outlet pipe 13 connected to the front and rear ends of the housing 11, respectively. A guide plate 14 is fixedly connected to the inner cavity of the housing 11. An air connection pipe 15 is connected to the top of one side of the housing 11. A distribution box 16 is fixedly connected to the inner cavity of the housing 11, and the distribution box 16 is connected to the air connection pipe 15. The other side of the distribution box 16 is connected to a heat exchange tube 17, and the other end of the heat exchange tube 17 is connected to a central box 18. The front end of the central box 18 extends into the inner cavity of the exhaust pipe 13. The top of the back of the box 11 is connected to a three-way pipe 19, and the bottom of the three-way pipe 19 extends into the inner cavity of the box 11 and is connected to a cooling pipe 110. The filter element filter assembly 2 includes a filter tube 21 that is bolted to the surface of the exhaust pipe 13. The inner cavity of the filter tube 21 is provided with a filter element 22, and the surface of the filter tube 21 is threaded with a dustproof net 23.

[0028] Specifically: The guide plates 14 inside the chamber 11 are arranged in a staggered pattern to form a serpentine channel, which prolongs the flow time of the waste heat steam. The heat exchange tube 17 is made of copper-nickel alloy. The other end of the tube merges into the collection box 18 and then into the outlet pipe 13. The upper end of the three-way pipe 19 is recycled and reused by an external water pump. The lower end branches out into two sets of serpentine cooling pipes 110, which are symmetrically distributed on the front and rear sides of the chamber 11. The filter element 22 has a three-layer composite structure. The inner layer is glass fiber filter cloth with a pore size of 5-10μm, which intercepts solid particles. The middle layer is activated carbon fiber felt that adsorbs volatile organic compounds. The outer layer is a stainless steel wire mesh support structure. The limiting ring and the fixing ring form an axial position for the filter element 22 through the conical surface cooperation.

[0029] Example 2

[0030] Please see Figure 1-5 Based on Embodiment 1, an air inlet is provided on the bottom of one side of the back of the box 11, and an air outlet is provided on the bottom of one side of the front of the box 11. The ends of the air inlet pipe 12 and the air outlet pipe 13 away from the box 11 are fixedly connected to flanges. The air inlet pipe 12 is connected to the exhaust pipe through the flange. An inclined plate 111 is fixedly connected to the bottom of the inner cavity of the box 11. The bottom of the inclined plate 111 is connected to the drain pipe 112. The drain pipe 112 is designed with an inclination. The cooling pipe 110 is located on the front and rear sides of the inner cavity of the box 11. The heat exchange pipe 17 is located between the front and rear cooling pipes 110. The cooling pipe 110 and the heat exchange pipe 17 are designed in a serpentine shape. A limit ring is fixedly connected to the rear end of the inner cavity of the filter pipe 21. A fixing ring is fixedly connected to the inner wall of the dustproof net 23. The fixing ring is in contact with the surface of the filter element 22. The drain pipe 112 discharges the waste liquid into the external wastewater filtration equipment. The purified water is connected to the top liquid inlet of the three-way pipe 19 through an external water pump.

[0031] Specifically: The low-position layout of the air inlet and outlet utilizes gravity to promote the natural settling of condensate, avoiding backflow of gas and liquid that affects processing efficiency; the flange connection method supports quick disassembly and assembly of equipment and pipe adaptation, meeting the needs of multiple equipment in parallel processing on the production line; the inclined plate 111 and the inclined drain pipe 112 form a liquid-guiding structure without dead angles, ensuring condensate discharge and preventing internal corrosion of the equipment; the symmetrical distribution of the cooling pipe 110 and the heat exchange pipe 17 forms a "cold and hot jacket" structure, improving the uniformity of heat exchange between waste heat steam and air; the serpentine pipe design increases the effective heat exchange length by more than 3 times, and combined with the turbulence-induced structure, greatly improves the heat exchange coefficient; the conical sealing structure of the limiting ring and the fixing ring ensures the airtightness of the filter element during installation, while facilitating quick one-handed replacement operation; the condensate circulation system enables water resource reuse, reducing wastewater discharge.

[0032] The working principle of this utility model is as follows: High-temperature waste heat steam enters the housing 11 from the inlet pipe 12, and after being guided by the guide plate 14, it comes into contact with the serpentine heat exchange tube 17 and cooling pipe 110. The water vapor condenses into liquid water and flows into the drain pipe 112 along the inclined plate 111. Simultaneously introduced cold air enters the intermediate serpentine heat exchange tube 17 through the distribution box 16. After absorbing the waste heat steam and heating up, it is sprayed into the outlet pipe 13 from the collection box 18. The dehydrated waste gas mixes with the heated hot air in the outlet pipe 13. By increasing the waste gas temperature and reducing the relative humidity, emissions are avoided. Subsequently, the water vapor condenses due to the drop in ambient temperature, fundamentally eliminating the "white smoke". The mixed exhaust gas enters the filter pipe 21 and passes through the glass fiber filter cloth and activated carbon fiber felt filter element in sequence, intercepting solid particles and adsorbing odor substances such as ethanol and esters. Finally, the dustproof net 23 blocks external debris from entering, achieving standard emissions. This structure completes the purification of waste heat steam, heat energy recovery and white smoke treatment in a single device through a four-step process of "condensation and dehydration - waste heat recovery - mixing and humidity conditioning - fine filtration", meeting the high-efficiency and environmentally friendly treatment needs of the liquor industry.

[0033] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A high-efficiency waste heat steam filtration structure, comprising a condensation cooling filtration assembly (1), characterized in that: The outlet of the condensation cooling filter assembly (1) is connected to the filter element filter assembly (2); The condensation cooling filter assembly (1) includes a housing (11), with an air inlet pipe (12) and an air outlet pipe (13) connected to the front and rear ends of the housing (11), respectively. A guide plate (14) is fixedly connected to the inner cavity of the housing (11), an air connection pipe (15) is connected to the top of one side of the housing (11), a distribution box (16) is fixedly connected to the inner cavity of the housing (11), the distribution box (16) is connected to the air connection pipe (15), a heat exchange pipe (17) is connected to the other side of the distribution box (16), and a central box (18) is connected to the other end of the heat exchange pipe (17). The front end of the central box (18) extends into the inner cavity of the air outlet pipe (13), and a three-way pipe (19) is connected to the top of the back of the housing (11). The bottom of the three-way pipe (19) extends into the inner cavity of the housing (11) and is connected to a cooling pipe (110). The filter element assembly (2) includes a filter tube (21) that is bolted to the surface of the air outlet pipe (13). The filter tube (21) has a filter element (22) inside and a dustproof mesh (23) threaded onto the surface of the filter tube (21).

2. The waste heat steam high-efficiency filtration structure according to claim 1, characterized in that: An air inlet is provided on the bottom side of the back of the box (11), and an air outlet is provided on the bottom side of the front of the box (11).

3. The waste heat steam high-efficiency filtration structure according to claim 1, characterized in that: The inlet pipe (12) and outlet pipe (13) are both fixedly connected to flanges at the ends away from the housing (11), and the inlet pipe (12) is connected to the exhaust pipe through the flanges.

4. The waste heat steam high-efficiency filtration structure according to claim 1, characterized in that: An inclined plate (111) is fixedly connected to the bottom of the inner cavity of the box (11), and a drain pipe (112) is connected to the bottom of the inclined plate (111). The drain pipe (112) is designed to be inclined.

5. The waste heat steam high-efficiency filtration structure according to claim 1, characterized in that: The cooling pipe (110) is located on the front and rear sides of the inner cavity of the box (11), and the heat exchange pipe (17) is located between the front and rear cooling pipes (110).

6. The waste heat steam high-efficiency filtration structure according to claim 1, characterized in that: The cooling pipe (110) and heat exchange pipe (17) are designed in a serpentine pattern.

7. The waste heat steam high-efficiency filtration structure according to claim 1, characterized in that: A limiting ring is fixedly connected to the rear end of the inner cavity of the filter tube (21), and a fixing ring is fixedly connected to the inner wall of the dustproof net (23), with the fixing ring in contact with the surface of the filter element (22).

8. The waste heat steam high-efficiency filtration structure according to claim 4, characterized in that: The drain pipe (112) discharges the waste liquid into the external wastewater filtration equipment, and the purified water is connected to the top inlet of the three-way pipe (19) through an external water pump.

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