D-ribose fermentation tail gas condensation and recovery equipment
By designing centrifugal separation and anti-adhesion components, the problem of interference between exhaust gas and spray liquid was solved, achieving efficient recovery of ethanol and condensate, improving the recovery rate and extending the equipment's operating cycle.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGXI CHENGZHI BIOENG
- Filing Date
- 2026-06-02
- Publication Date
- 2026-07-14
AI Technical Summary
In existing D-ribose fermentation tail gas treatment equipment, the straight upward movement of the tail gas and the downward movement of the sprayed liquid create a counter-interference, causing the sprayed water mist to be carried out of the tower by the airflow, resulting in low recovery rate and insufficient gas-liquid contact, leading to low ethanol recovery rate.
The centrifugal separation component creates a spiral airflow that rises and crosses with the liquid sprayed from the spray head. An anti-adhesion component uses the spiral airflow to push the packing material to tumble, and combined with the filter component to filter the sprayed solution, achieving gas-liquid separation and efficient recovery.
It improves the recovery efficiency of ethanol and condensate, avoids packing blockage, extends equipment operation cycle, reduces maintenance frequency, and ensures the acquisition of high-purity recovery liquid.
Smart Images
Figure CN122377237A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of waste gas treatment technology, specifically to a device for condensing and recovering D-ribose fermentation tail gas. Background Technology
[0002] D-ribose fermentation exhaust gas is the process waste gas continuously discharged from the fermenter during the D-ribose fermentation production process. Its main components are carbon dioxide, water vapor, ethanol vapor, and trace amounts of fermentation liquid droplets. Among them, ethanol, condensate, and other components have high recycling value. Direct emission will not only cause material waste but also pollute the surrounding environment.
[0003] Currently, the industry mostly adopts the conventional structure of "in-tower spraying + packing adsorption" for the recovery and treatment of D-ribose fermentation tail gas. The tail gas enters from the bottom of the tower and rises in a straight line, coming into countercurrent contact with the washing liquid sprayed from the spray head, and is then discharged after being filtered through the packing layer, thereby achieving the adsorption and condensation recovery of recyclable components in the tail gas.
[0004] In actual use, the straight upward flow of exhaust gas in existing equipment will cause interference with the downward flow of sprayed liquid. This will result in the sprayed water mist being carried out of the tower by the airflow, leading to a high recovery loss rate, as well as insufficient gas-liquid contact and low ethanol recovery rate. Summary of the Invention
[0005] To address the shortcomings of existing technologies, this invention provides a D-ribose fermentation tail gas condensation and recovery device, which solves the problem of tail gas rising and spraying liquid causing interference, which causes spray water mist to be carried out of the tower by the airflow, resulting in low recovery rate.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a D-ribose fermentation tail gas condensation and recovery device, comprising a frame, wherein a spray tower body, a second adsorption tank, and a first adsorption tank are fixedly connected sequentially from left to right inside the frame. The second adsorption tank and the spray tower body are connected by a pipe, and the first adsorption tank and the second adsorption tank are connected by a pipe. A centrifugal separation component is installed inside the spray tower body, which guides the tail gas to spiral upward and separates the gas and liquid. An anti-sticking device is installed inside the spray tower body. The spray tower body includes an anti-adhesion component for tumbling the packing material with the spirally rising exhaust gas. An internal filter assembly is provided for filtering and recovering the solution at the bottom of the tower. An air inlet pipe is connected to the outside of the spray tower body, and a condenser is fixedly connected to the outside of the air inlet pipe. A water pump is fixedly connected to the outside of the spray tower body, with its input end fixedly connected to the bottom of the spray tower body via a pipe. A spray head is fixedly connected to the top of the spray tower body, and the output end of the water pump is fixedly connected to the outside of the spray head via a pipe.
[0007] Preferably, the centrifugal separation component includes a support base, which is fixedly connected to the interior of the spray tower body. A guide column is fixedly connected to the top of the support base, and multiple guide plates are fixedly connected to the outer side of the guide column. The edges of the multiple guide plates are provided with notches.
[0008] Preferably, the anti-adhesion component includes a packing bin, which is rotatably connected to the inside of the spray tower body. The inside of the spray tower body is provided with a rotating groove. A rotating ring is fixedly connected to the outside of the packing bin, and the rotating ring is rotatably connected to the inside of the rotating groove. Multiple spherical packings are provided inside the packing bin, and a swirl plate is fixedly connected to the bottom of the packing bin.
[0009] Preferably, the filter assembly includes a disc disposed inside the spray tower body. A bracket is fixedly connected to the bottom of the disc, and the bracket is disposed inside the spray tower body. A main shaft is rotatably connected to the middle of the bracket, and blades are fixedly connected to the top of the main shaft. The blades are disposed inside the disc. A limiting ring is slidably connected to the outer periphery of the main shaft, and a limiting groove is formed on the outer side of the main shaft. The limiting ring is slidably connected inside the limiting groove. Two impact hammers are fixedly connected to the outer side of the limiting ring. A filter plate is fixedly connected inside the spray tower body, and multiple protrusions are fixedly connected to the edge of the filter plate. One end of each impact hammer abuts against the top of a protrusion.
[0010] Preferably, a water supply pipe is fixedly connected to the outside of the spray tower body, one end of the water supply pipe is located above the disc, and the other end of the water supply pipe is connected to an external water source.
[0011] Preferably, an inspection door is rotatably connected to the outside of the spray tower body, and an extraction slot is provided inside the spray tower body, with the support rotatably connected inside the extraction slot.
[0012] Preferably, a handle is fixedly connected to the outside of the inspection door, and the inspection door is rotatably connected to the outside of the spray tower body via a hinge.
[0013] Preferably, the blade is bucket-shaped, and a groove is formed inside the blade. The water supply pipe generates water flow that impacts the groove, causing the blade to rotate.
[0014] Preferably, the protrusion is sloping, and the shape of the end of the impact hammer matches it.
[0015] Preferably, a discharge pipe is fixedly connected to the bottom of the spray tower body, and a solenoid valve is fixedly connected to the middle of the discharge pipe.
[0016] This invention provides a device for condensing and recovering D-ribose fermentation tail gas. It has the following beneficial effects: 1. This invention utilizes a centrifugal separation component to create a spiral airflow from the exhaust gas, which rises and forms a crossflow with the liquid sprayed from the spray head, ensuring that the two do not interfere with each other. The sprayed water mist falls and comes into contact with the spiral airflow, is thrown against the tower wall, and then flows into the filter component, realizing gas-liquid separation. This avoids the gas-liquid collision problem of traditional structures and improves the efficiency of ethanol and condensate recovery.
[0017] 2. This invention utilizes an anti-adhesion component, using an upward spiral airflow to drive the swirl plate to rotate the packing chamber, causing the spherical packing to sway. This prevents the packing from sticking together, which can lead to decreased filtration efficiency and clogging, thus extending the continuous operation cycle of the equipment and reducing the frequency of packing replacement.
[0018] 3. This invention filters the ethanol-containing solution after spraying through a filter assembly, efficiently intercepting impurities to obtain a high-purity recovery liquid; it utilizes the water flow of the water exchange to drive the filter plate to automatically vibrate and clear blockages, eliminating the need for an additional drive device, ensuring stable filtration throughput, and avoiding filter plate clogging and frequent shutdowns for cleaning.
[0019] 4. This invention, through the cooperation of inspection door, bracket and extraction slot, enables quick repair and replacement of parts, reduces maintenance difficulty, and eliminates the need for overall disassembly. Attached Figure Description
[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the spray tower body of the present invention; Figure 3 This is a schematic diagram of the centrifugal separation component of the present invention; Figure 4 This is a schematic diagram of the anti-adhesion component of the present invention; Figure 5 This is a schematic diagram of the structure of the rotating groove of the present invention; Figure 6 This is a schematic diagram of the spherical packing material of the present invention; Figure 7 This is a schematic diagram of the structure of the access door of the present invention; Figure 8 This is a schematic diagram of the anti-clogging self-cleaning component of the present invention; Figure 9 This is a schematic diagram of the protrusion structure of the present invention.
[0021] The components include: 1. Spray tower body; 2. First adsorption tank; 3. Second adsorption tank; 4. Water pump; 5. Spray head; 6. Centrifugal separation assembly; 61. Support base; 62. Guide column; 63. Baffle plate; 64. Notch; 7. Anti-adhesion assembly; 71. Packing bin; 72. Swirl plate; 73. Rotary ring; 74. Rotary groove; 75. Spherical packing; 8. Filter assembly; 81. Disc; 82. Blade; 83. Main shaft; 84. Support; 85. Impact hammer; 86. Filter plate; 87. Protrusion; 88. Limiting groove; 89. Limiting ring; 810. Inspection door; 811. Removal groove; 9. Water supply pipe; 10. Equipment frame; 11. Condenser; 12. Air inlet pipe. Detailed Implementation
[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.
[0023] Please see the appendix Figure 1 - Appendix Figure 9 This invention provides a D-ribose fermentation tail gas condensation and recovery device, including a frame 10. Inside the frame 10, from left to right, are a spray tower body 1, a second adsorption tank 3, and a first adsorption tank 2. The second adsorption tank 3 is connected to the spray tower body 1 via a pipe, and the first adsorption tank 2 and the second adsorption tank 3 are also connected via pipes. Both the first adsorption tank 2 and the second adsorption tank 3 are filled with activated carbon, allowing the treated tail gas to be adsorbed and purified sequentially. A centrifugal separation component 6 is installed inside the spray tower body 1. The centrifugal separation component 6 guides the tail gas spirally upward, separating the gas and liquid, causing the rising tail gas and the descending spray liquid to form a cross-flow motion. An anti-adhesion component 7 is installed inside the spray tower body 1. The anti-adhesion component 7 is used to guide the tail gas spirally upward... The rising exhaust gas tumbles the packing material, preventing it from stagnating and sticking together. The spray tower body 1 is internally equipped with a filter assembly 8, which filters the bottom recovery solution, intercepting solid impurities and purifying the ethanol recovery solution. An air inlet pipe 12 is fixedly connected to the outside of the spray tower body 1, with a condenser 11 installed in the middle to pre-condense and cool the fermentation exhaust gas entering the equipment. A water pump 4 is fixedly connected to the outside of the spray tower body 1, with its input end fixedly connected to the bottom of the spray tower body 1 via a pipe. A spray head 5 is fixedly connected to the top of the spray tower body 1, and the output end of the water pump 4 is fixedly connected to the outside of the spray head 5 via a pipe, achieving bottom liquid circulation spraying to intercept and recover the ethanol component in the exhaust gas.
[0024] Please see the appendix Figure 2 and attached Figure 3 In a preferred embodiment of the present invention, the centrifugal separation component 6 includes a support base 61, which is fixedly connected to the inside of the spray tower body 1. A guide column 62 is fixedly connected to the top of the support base 61, and a plurality of guide plates 63 are fixedly connected to the outside of the guide column 62. The edges of the plurality of guide plates 63 are provided with notches 64, and the plurality of guide plates 63 are inclined. At the same time, the plurality of notches 64 are at a certain angle to each other. This combination forms a spiral flow channel, which guides the exhaust gas to rise steadily along the spiral trajectory and throws the spray water mist onto the inner wall of the spray tower body 1, thereby realizing gas-liquid cross-flow and diversion.
[0025] Please see the appendix Figure 2 - Appendix Figure 6 In a preferred embodiment of the present invention, the anti-adhesion component 7 includes a packing bin 71, which is rotatably connected to the inside of the spray tower body 1. A rotating groove 74 is provided inside the spray tower body 1. A rotating ring 73 is fixedly connected to the outside of the packing bin 71 and is rotatably connected to the inside of the rotating groove 74. A plurality of spherical packings 75 are provided inside the packing bin 71. A swirl plate 72 is fixedly connected to the bottom of the packing bin 71. The swirl plate 72 is driven by the thrust of the spirally rising exhaust gas to rotate the packing bin 71 as a whole, causing the spherical packings 75 inside to continuously shake and roll.
[0026] Please see the appendix Figure 7 - Appendix Figure 9 In a preferred embodiment of the present invention, the filter assembly 8 includes a disc 81 disposed inside the spray tower body 1. A bracket 84 is fixedly connected to the bottom of the disc 81, and the bracket 84 is disposed inside the spray tower body 1. A main shaft 83 is rotatably connected to the middle of the bracket 84, and a blade 82 is fixedly connected to the top of the main shaft 83. The blade 82 is disposed inside the disc 81. Water flow impacting the blade 82 can drive the main shaft 83 to rotate as a whole. A limit ring 89 is slidably connected to the outer periphery of the main shaft 83. A limiting groove 88 is provided on the side, and a limiting ring 89 is slidably connected inside the limiting groove 88. The limiting groove 88 restricts the limiting ring 89 to slide vertically only and prevents it from rotating circumferentially. Two impact hammers 85 are fixedly connected to the outside of the limiting ring 89. A filter plate 86 is fixedly connected inside the spray tower body 1. Multiple protrusions 87 are fixedly connected to the edge of the filter plate 86. One end of the impact hammer 85 abuts against the top of the protrusion 87. The impact hammer 85, which rotates with the main shaft, works with the protrusion to reciprocate and lift to hammer, causing the filter plate 86 to vibrate and clear the blockage.
[0027] Please see the appendix Figure 1 and attached Figure 8 In a preferred embodiment of the present invention, a water supply pipe 9 is fixedly connected to the outside of the spray tower body 1. One end of the water supply pipe 9 is located above the disc 81, and the other end of the water supply pipe 9 is connected to an external water source.
[0028] Please see the appendix Figure 7 and attached Figure 8 In a preferred embodiment of the present invention, an inspection door 810 is rotatably connected to the outside of the spray tower body 1, and an extraction slot 811 is provided inside the spray tower body 1. A bracket 84 is rotatably connected inside the extraction slot 811. The core component of the filter assembly 8 can be rotated out of the extraction slot 811 by rotating the bracket 84, which facilitates quick inspection and replacement.
[0029] Please see the appendix Figure 7 and attached Figure 8 In a preferred embodiment of the present invention, a handle is fixedly connected to the outside of the maintenance door 810. The maintenance door 810 is rotatably connected to the outside of the spray tower body 1 via a hinge, which facilitates the quick opening and closing of the maintenance door 810 by the staff and makes the operation convenient.
[0030] Please see the appendix Figure 8 and attached Figure 9 In a preferred embodiment of the present invention, the blade 82 is bucket-shaped, and a groove is provided inside the blade 82. The water supply pipe 9 generates water flow that impacts the groove, causing the blade 82 to rotate. The bucket-shaped groove can effectively receive the water flow and improve the water flow driving efficiency.
[0031] Please see the appendix Figure 8 and attached Figure 9 In a preferred embodiment of the present invention, the protrusion 87 is sloping, and the shape of the end of the impact hammer 85 matches it, ensuring that the impact hammer rises and falls smoothly along the slope of the protrusion 87, and the hammering action is stable and smooth.
[0032] Please see the appendix Figure 1 and attached Figure 2 In a preferred embodiment of the present invention, a discharge pipe is fixedly connected to the bottom of the spray tower body 1, and a solenoid valve is fixedly connected to the middle of the discharge pipe, which can automatically control the discharge and collection of high-purity ethanol recovery liquid.
[0033] Working principle: First, the tail gas from D-ribose fermentation enters the spray tower body 1 through a pipeline for condensation and recovery. Ethanol is trapped by contact with water. The specific process is as follows: the tail gas first enters the condenser 11 through the inlet pipe 12 for condensation, and then enters the spray tower body 1. During the ascent, it passes through the anti-sticking component 7 and the spray head 5 for spray treatment in sequence. Ethanol recovery is completed at this stage. The treated tail gas is discharged from the top of the spray tower body 1 and enters the second adsorption tank 3 and the first adsorption tank 2 in sequence. Finally, it is discharged after meeting the emission standards.
[0034] The function of the centrifugal separation component 6 is to make the exhaust gas form a spiral airflow that rises and forms a crossflow with the liquid sprayed from the spray head 5, ensuring that the rising airflow and the falling liquid do not interfere with each other. When the water mist generated by the spray falls, it comes into contact with the spiral airflow and is thrown to the inner wall of the spray tower body 1 by the airflow, and then flows into the filter component 8, thereby realizing gas-liquid separation.
[0035] The anti-adhesion component 7 is designed to prevent the spherical packing 75 from sticking together and reducing the filtration effect. The specific principle is as follows: the rising spiral airflow pushes the swirl plate 72, which drives the packing chamber 71 to rotate, causing the spherical packing 75 to shake, thus preventing it from sticking together with solid particles in the exhaust gas due to prolonged static contact.
[0036] The filter assembly 8 is used to filter the ethanol-containing solution at the bottom of the recovery tower, intercepting impurities. The specific process is as follows: After spraying, the solution enters the filter assembly and is filtered by the filter plate 86 to obtain a high-purity recovery solution. During water replacement, external water is discharged into the disc 81 through the water supply pipe 9, driving the blades 82 to rotate, which in turn drives the impact hammer 85 to move along the edge of the filter plate 86. The filter plate 86 has multiple protrusions 87 on its edge. When the impact hammer 85 passes the protrusions 87, it is passively lifted, then falls due to gravity and strikes the filter plate 86, causing it to vibrate. During the lifting process, the limiting ring 89 slides within the limiting groove 88, lifting only the impact hammer 85 without changing the position of the main shaft 83. Finally, opening the bottom valve allows the high-purity ethanol solution to be recovered. When repairing or replacing the disc 81, blades 82, main shaft 83, etc., the inspection door 810 is opened, and then the bracket 84 is rotated along the removal groove 811 to remove it from the opening, completing the replacement.
[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for condensing and recovering D-ribose fermentation tail gas, comprising a frame (10), characterized in that, The equipment frame (10) is fixedly connected from left to right with a spray tower body (1), a second adsorption tank (3), and a first adsorption tank (2). The second adsorption tank (3) and the spray tower body (1) are connected by a pipe, and the first adsorption tank (2) and the second adsorption tank (3) are connected by a pipe. The spray tower body (1) is equipped with a centrifugal separation component (6), which is used to guide the exhaust gas to rise spirally and separate the gas and liquid. The spray tower body (1) is also equipped with an anti-adhesion component (7), which is used to tumble the packing material by the spirally rising exhaust gas. The spray tower body (1) is equipped with a filter assembly (8) inside, which is used for filtering and recovering the solution at the bottom of the tower. An air inlet pipe (12) is connected to the outside of the spray tower body (1). A condenser (11) is fixedly connected to the outside of the air inlet pipe (12). A water pump (4) is fixedly connected to the outside of the spray tower body (1). The input end of the water pump (4) is fixedly connected to the bottom of the spray tower body (1) through a pipe. A spray head (5) is fixedly connected to the top of the spray tower body (1). The output end of the water pump (4) is fixedly connected to the outside of the spray head (5) through a pipe.
2. The D-ribose fermentation tail gas condensation and recovery device according to claim 1, characterized in that, The centrifugal separation component (6) includes a support base (61), which is fixedly connected to the inside of the spray tower body (1). A guide column (62) is fixedly connected to the top of the support base (61), and multiple guide plates (63) are fixedly connected to the outside of the guide column (62). The edges of the multiple guide plates (63) are provided with notches (64).
3. The D-ribose fermentation tail gas condensation and recovery device according to claim 1, characterized in that, The anti-adhesion component (7) includes a packing bin (71), which is rotatably connected to the inside of the spray tower body (1). A rotating groove (74) is provided inside the spray tower body (1). A rotating ring (73) is fixedly connected to the outside of the packing bin (71). The rotating ring (73) is rotatably connected to the inside of the rotating groove (74). Multiple spherical packings (75) are provided inside the packing bin (71). A swirl plate (72) is fixedly connected to the bottom of the packing bin (71).
4. The D-ribose fermentation tail gas condensation and recovery device according to claim 1, characterized in that, The filter assembly (8) includes a disc (81) disposed inside the spray tower body (1). A bracket (84) is fixedly connected to the bottom of the disc (81). The bracket (84) is disposed inside the spray tower body (1). A main shaft (83) is rotatably connected to the middle of the bracket (84). A blade (82) is fixedly connected to the top of the main shaft (83). The blade (82) is disposed inside the disc (81). The main shaft (83)... A limiting ring (89) is slidably connected to the outer periphery. A limiting groove (88) is opened on the outer side of the main shaft (83). The limiting ring (89) is slidably connected to the inside of the limiting groove (88). Two impact hammers (85) are fixedly connected to the outer side of the limiting ring (89). A filter plate (86) is fixedly connected inside the spray tower body (1). Multiple protrusions (87) are fixedly connected to the edge of the filter plate (86). One end of the impact hammer (85) abuts against the top of the protrusion (87).
5. The D-ribose fermentation tail gas condensation and recovery device according to claim 1, characterized in that, A water supply pipe (9) is fixedly connected to the outside of the spray tower body (1). One end of the water supply pipe (9) is located above the disc (81), and the other end of the water supply pipe (9) is connected to an external water source.
6. The D-ribose fermentation tail gas condensation and recovery device according to claim 4, characterized in that, The outside of the spray tower body (1) is rotatably connected to an inspection door (810), and the inside of the spray tower body (1) is provided with an extraction slot (811). The bracket (84) is rotatably connected inside the extraction slot (811).
7. The D-ribose fermentation tail gas condensation and recovery device according to claim 6, characterized in that, The outside of the inspection door (810) is fixedly connected to a handle, and the inspection door (810) is rotatably connected to the outside of the spray tower body (1) by a hinge.
8. The D-ribose fermentation tail gas condensation and recovery device according to claim 4, characterized in that, The blade (82) is bucket-shaped, and a groove is provided inside the blade (82). The water supply pipe (9) generates water flow that impacts the groove, causing the blade (82) to rotate.
9. The D-ribose fermentation tail gas condensation and recovery device according to claim 8, characterized in that, The protrusion (87) is sloping, and the shape of the end of the impact hammer (85) matches it.
10. A D-ribose fermentation tail gas condensation and recovery device according to claim 1, characterized in that, The bottom of the spray tower body (1) is fixedly connected to a discharge pipe, and a solenoid valve is fixedly connected to the middle of the discharge pipe.