A kind of ethanol recovery tower on-line tower cooking is used with alkali device

Abstract

The utility model provides a kind of ethanol recovery tower on -line cooking tower with alkali device, belong to blood product ethanol recovery technical field, including alkali tank main body, the bottom of alkali tank main body is connected with liquid inlet water distribution pipe, and liquid inlet water distribution pipe can be connected with the tap water pipeline of tap water equipment;The inner top of alkali tank main body is provided with the solid filter located above liquid inlet water distribution pipe, the top of alkali tank main body is connected with liquid outlet pipe, and liquid outlet pipe and the feed line A of ethanol recovery tower and the feed line B of raw material ethanol equipment are in parallel connection.The utility model can solve the defect of untreated recovery tower impurity, and realize no shutdown and no pipe cleaning impurity by being connected in parallel with feed line, and realize energy saving by the aid of tap water stirring, can adapt to ethanol recovery scene, guarantee production stability.

Description

Technical Field

[0001] This utility model relates to the field of ethanol recovery technology for blood products, and in particular to an alkali addition device for online boiling of an ethanol recovery tower. Background Technology

[0002] In the field of ethanol recovery from blood products, the ethanol recovery tower is the core equipment for realizing ethanol recycling, and its long-term stable operation is crucial for production. In the prior art, Chinese patent application publication number CN112457167A discloses a system and process for ethanol recovery from waste liquid in blood products. This system, through components such as a neutralization tank, preheater, and segmented condenser, utilizes high-temperature steam at the top of the recovery tower and high-temperature wastewater at the bottom to preheat the waste liquid. Combined with a segmented cooling design, it significantly reduces distillation energy consumption while improving the purity and efficiency of ethanol recovery.

[0003] However, this system only focuses on ethanol extraction and purification, failing to address the problem of impurity accumulation during long-term operation of the recovery tower. Proteins in blood product waste are difficult to remove completely by the filters; some proteins, after entering the recovery tower, denature and aggregate under high-temperature distillation, depositing as stubborn impurities on the tower walls, trays, and pipe surfaces. These impurities hinder fluid flow, reduce heat and mass transfer efficiency, weaken the system's energy-saving effect, and lead to a decrease in ethanol purity. They also accelerate equipment corrosion, shorten the recovery tower's lifespan, and may even cause pipe blockages and flooding within the tower, forcing system shutdown for maintenance and affecting production continuity.

[0004] Currently, the industry mainly uses "periodic shutdown for cleaning and boiling" to handle impurities: this requires shutting down the recovery tower and disassembling related pipeline connections, injecting alkali solution to heat and boil the tower, and then reinstalling the pipeline to resume production. However, this method has significant drawbacks: shutdown interrupts production and takes several days, causing huge economic losses; frequent pipe disassembly wears down seals, increasing the risk of flammable ethanol leakage and threatening safety; the disassembly and reassembly process is complex and costly, and multiple airtightness tests are required after reassembly, further extending downtime.

[0005] Therefore, how to effectively clean denatured proteins and other impurities in the ethanol recovery tower without interrupting production or disassembling pipelines, in order to make up for the shortcomings of existing ethanol recovery technologies in terms of long-term equipment maintenance, has become an urgent technical problem to be solved in the field of ethanol recovery of blood products. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies, such as the need for shutdown for maintenance, low safety, frequent disassembly leading to pipe wear, and high maintenance costs, and to provide an alkali addition device for online boiling of an ethanol recovery tower.

[0007] This utility model is achieved through the following technical solution: an alkali addition device for online boiling of an ethanol recovery tower, comprising an alkali tank body, the bottom of which is connected to a liquid inlet distribution pipe, which can be connected to the tap water pipeline of a tap water supply system, the alkali tank body can introduce tap water through the tap water pipeline, and the liquid inlet distribution pipe can mix the tap water with the solid alkali flakes inside the alkali tank body; a solid filter is provided at the inner top of the alkali tank body above the liquid inlet distribution pipe, and an outlet pipe is connected to the top of the alkali tank body, the outlet pipe being connected in parallel with the feed pipeline A of the ethanol recovery tower and the feed pipeline B of the raw material ethanol equipment.

[0008] This device requires no additional power equipment and can complete the alkali solution transportation using tap water pressure, simplifying the device structure and reducing energy consumption. The parallel design of the liquid outlet pipe 5 and the two feed pipes breaks the limitation of traditional boiling towers requiring pipe disassembly, solves the problem of lack of tower cleaning solutions in existing technologies, and achieves seamless connection between "normal recovery" and "online boiling" of the ethanol recovery tower, avoiding production interruptions caused by shutdown and pipe disassembly.

[0009] A further improvement of this utility model is that an upper alkali tank head is provided at the top of the alkali tank body, which is also the top of the solid filter, and a lower alkali tank head is provided at the bottom of the alkali tank body.

[0010] A further improvement of this utility model is that the alkali tank body is provided with a feeding port, and a detachable flange blind plate is provided at the feeding port.

[0011] A further improvement of this utility model is that a support ring is provided inside the body of the alkali tank, and the solid filter is installed on the inner top of the body of the alkali tank through the support ring.

[0012] A further improvement of this utility model is that valve A is provided at the liquid outlet pipe and valve B is provided at the feed pipe B.

[0013] A further improvement of this invention is that valve A is a flow control valve, and the flow rate of the alkaline solution entering the ethanol recovery tower can be controlled by adjusting the opening degree of valve A.

[0014] A further improvement of this utility model is that a support leg is provided on the outer side of the alkali tube body.

[0015] A further improvement of this utility model is that the liquid inlet water distribution pipe is detachably connected to the tap water pipeline via a flange.

[0016] A further improvement of this utility model is that the wall of the liquid inlet distribution pipe is provided with several water outlet holes, and the opening direction and angle of the water outlet holes can be adapted to the internal space of the alkali tank body.

[0017] A further improvement of this invention is that the pore size of the solid filter is no greater than 1 mm.

[0018] As can be seen from the above technical solutions, the beneficial effects of this utility model are: 1. By connecting this device in parallel with the ethanol recovery tower feed pipeline and the raw ethanol feed pipeline, alkaline solution can be directly delivered to remove denatured protein impurities in the tower without interrupting the original ethanol recovery process. This avoids the decline in recovery efficiency, equipment corrosion, and downtime caused by impurity accumulation, ensuring the long-term stable operation of the ethanol recovery system. At the same time, it eliminates the need for traditional shutdown and pipe dismantling methods, fundamentally reducing economic losses caused by production interruptions.

[0019] 2. This device utilizes tap water pressure to transport alkali solution. The outlet structure of the inlet water distribution pipe enables self-stirring mixing of tap water and solid caustic soda flakes, eliminating the need for additional power equipment and thus improving energy efficiency. The solid filter intercepts undissolved large particles and impurities of caustic soda flakes, preventing pipe blockage. Furthermore, the upper and lower end caps of the alkali tank, the inlet water distribution pipe, and the blind flange at the feed port are all designed to be detachable, eliminating the need to disassemble the entire device for maintenance. This reduces manpower and material costs, minimizes wear on seals from frequent pipe disassembly, and lowers the risk of ethanol leakage.

[0020] 3. This device can precisely control the flow rate of alkali solution according to the accumulation of impurities in the tower through the flow regulation function of valve A, ensuring that the alkali solution reacts fully with the denatured protein and avoiding waste of alkali solution or incomplete cleaning; the entire cleaning process does not require shutdown or disassembly of pipelines, which can maintain the ethanol recovery efficiency of the ethanol recovery system and ensure the stability of the purity of the recovered ethanol, avoiding impurities from affecting the quality of subsequent blood product production. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0023] Figure 2 This is a schematic diagram of the structure of the alkali tank body according to a specific embodiment of the present invention.

[0024] Figure 3 yes Figure 2 Cross-sectional view.

[0025] Figure 4 This is a schematic diagram of the structure of the liquid inlet distribution pipe according to a specific embodiment of this utility model.

[0026] Figure 5 This is a schematic diagram of the structure of a solid filter according to a specific embodiment of the present invention.

[0027] In the diagram: 1. Alkali tank body; 2. Alkali tank upper end cap; 3. Alkali tank lower end cap; 4. Liquid inlet water distribution pipe; 401. Water outlet; 5. Liquid outlet pipe; 501. Valve A; 6. Feed port; 601. Flange blind plate; 7. Support ring; 8. Solid filter; 801. Filter hole; 9. Support leg; 10. Ethanol recovery tower; 1001. Feed line A; 11. Raw material ethanol equipment; 1101. Feed line B; 1102. Valve B; 12. Water supply equipment; 1201. Water supply line. Detailed Implementation

[0028] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0029] Now refer to Figures 1-2 The following is a description of a specific embodiment: The alkali addition device for an online boiling tower of an ethanol recovery tower according to this utility model includes an alkali tank body 1. The bottom of the alkali tank body 1 is connected to a liquid inlet distribution pipe 4, and the liquid inlet distribution pipe 4 can be connected to the tap water pipeline 1201 of the tap water equipment 12. The alkali tank body 1 can introduce tap water through the tap water pipeline 1201, and the liquid inlet distribution pipe 4 can mix the tap water with the solid alkali flakes inside the alkali tank body 1. A solid filter 8 is provided at the top of the alkali tank body 1, located above the liquid inlet distribution pipe 4. The top of the alkali tank body 1 is connected to an outlet pipe 5, which is connected in parallel with the feed pipeline A1001 of the ethanol recovery tower 10 and the feed pipeline B1101 of the raw material ethanol equipment 11.

[0030] During the online boiling operation of the ethanol recovery tower, solid caustic soda flakes are first added to the alkali tank body 1. Then, tap water is introduced into the alkali tank body 1 through the inlet water distribution pipe 4, which is connected to the tap water pipeline 1201 of the tap water equipment 12. Under the guidance of the inlet water distribution pipe 4, the tap water fully contacts and mixes with the solid caustic soda flakes in the alkali tank body 1, gradually dissolving to form an alkaline solution. The alkaline solution flows upward under the pressure of the tap water and passes through the solid filter 8 at the top of the alkali tank body 1. After filtering out large particles of undissolved solid caustic soda flakes and impurities, it is transported through the outlet pipe 5 to the pipeline connected in parallel with the feed pipeline A1001 of the ethanol recovery tower 10 and the feed pipeline B1101 of the raw material ethanol equipment 11. Finally, it enters the ethanol recovery tower 10 to react with denatured protein impurities in the tower, achieving online boiling cleaning. During daily ethanol recovery, the alkaline solution is stopped from being transported, and the raw material ethanol enters the ethanol recovery tower 10 through the feed pipeline B1101.

[0031] This device requires no additional power equipment and can complete the alkali solution transportation using tap water pressure, simplifying the device structure and reducing energy consumption. The parallel design of the liquid outlet pipe 5 and the two feed pipes breaks the limitation of traditional boiling towers requiring pipe disassembly, solves the problem of lack of tower cleaning solutions in existing technologies, and achieves seamless connection between "normal recovery" and "online boiling" of the ethanol recovery tower, avoiding production interruptions caused by shutdown and pipe disassembly.

[0032] Specifically, refer to Figure 2 The top of the alkali tank body 1, which is also the top of the solid filter 8, is provided with an upper alkali tank head 2, and the bottom of the alkali tank body 1 is provided with a lower alkali tank head 3. The upper alkali tank head 2 covers the top of the alkali tank body 1, forming a seal on the top of the alkali tank body 1 to prevent alkali solution from evaporating or external impurities from falling into the interior of the alkali tank body 1; the lower alkali tank head 3 seals the bottom of the alkali tank body 1 to prevent alkali solution from leaking from the bottom of the tank; when it is necessary to repair the internal components of the alkali tank body 1 or clean the impurities deposited at the bottom of the tank, the upper alkali tank head 2 or the lower alkali tank head 3 can be disassembled for operation.

[0033] This device effectively prevents alkali leakage and impurity contamination through the sealing effect of the upper and lower end caps, ensuring the safety of the production environment and the purity of the alkali, and avoiding the impact of alkali contamination on the cleaning effect of the ethanol recovery tower. The detachable design makes equipment maintenance more convenient, eliminating the need to disassemble the entire alkali addition device, shortening maintenance time, reducing maintenance costs, and solving the problems of cumbersome and time-consuming maintenance of traditional equipment.

[0034] Specifically, refer to Figure 2The alkali tank body 1 is provided with a feeding port 6, and a detachable flange blind plate 601 is provided at the feeding port 6. When the storage of solid alkali flakes in the alkali tank body 1 is insufficient, the flange blind plate 601 at the feeding port 6 is removed, and solid alkali flakes are added to the alkali tank body 1 through the feeding port 6; after the addition is completed, the flange blind plate 601 is reinstalled to seal the feeding port 6 and maintain the airtight environment inside the alkali tank body 1.

[0035] This device, through the detachable design of the flange blind plate 601, facilitates the rapid addition of solid caustic soda flakes and ensures the sealing of the caustic soda tank body 1 after addition, preventing external dust and impurities from entering the tank through the feed port 6 and contaminating the caustic soda solution, thus ensuring the purity of the caustic soda solution used in the boiling tower; at the same time, it avoids the caustic soda evaporation from causing harm to operators, improves operational safety, and solves the problems of easy contamination and safety hazards associated with traditional open feed.

[0036] Specifically, refer to Figure 2 The alkali tank body 1 has a support ring 7 inside, and the solid filter 8 is installed on the inner top of the alkali tank body 1 through the support ring 7. The support ring 7 is fixed inside the alkali tank body 1, providing a stable installation reference for the solid filter 8, so that the solid filter 8 is accurately fixed in a preset position on the inner top of the alkali tank body 1; when the alkali liquid in the alkali tank body 1 flows upward, it must all pass through the solid filter 8 before entering the outlet pipe 5, ensuring that the alkali liquid is fully filtered.

[0037] This device prevents the solid filter 8 from shifting or tilting under the impact of alkali solution through the fixing effect of the support ring 7, ensuring the stability of the filtration path and preventing unfiltered alkali solution from directly entering the outlet pipe 5; at the same time, it provides reliable installation support for the solid filter 8, extends the service life of the filter, avoids pipeline blockage caused by filter displacement, and ensures smooth alkali solution delivery during online boiling of the ethanol recovery tower.

[0038] Specifically, refer to Figure 1 A valve A501 is installed at the liquid outlet pipe 5, and a valve B1102 is installed at the feed pipe B1101. The valve A501 is a flow control valve, and the flow rate of the alkaline solution entering the ethanol recovery tower 10 can be controlled by adjusting the opening degree of the valve A501.

[0039] When the ethanol recovery tower 10 needs to recover ethanol normally, valve A501 on the outlet pipe 5 is closed, and valve B1102 on the feed pipe B1101 is opened, allowing the raw ethanol to enter the ethanol recovery tower 10 through the feed pipe B1101. When online boiling is required, valve B1102 is closed, and valve A501 is opened, allowing the alkali solution in the alkali tank body 1 to enter the ethanol recovery tower 10 through the outlet pipe 5. Since valve A501 is a flow control valve, the opening degree of valve A501 can be adjusted according to the amount of impurities accumulated in the ethanol recovery tower 10—such as the pressure difference inside the tower and the operating time—to control the flow rate of the alkali solution entering the ethanol recovery tower 10.

[0040] This device allows for rapid switching between "normal recovery" and "online boiling" of the ethanol recovery tower by simply opening and closing valves A501 and B1102, without the need for shutdown or pipeline disassembly. This solves the problem of production interruption and significant economic losses caused by shutdowns in traditional boiling towers. The flow regulation function of valve A501 can adapt to the boiling requirements under different levels of impurity contamination, avoiding alkali waste or incomplete cleaning, and improving the efficiency and economy of boiling.

[0041] Specifically, refer to Figure 2 The outer side of the alkali pipe body is provided with support legs 9. The support legs 9 are fixed to the bottom of the outer side of the alkali tank body 1, supporting the alkali tank body 1 on the ground or equipment platform, so that the bottom of the alkali tank body 1 is kept at a certain distance from the placement surface, avoiding the alkali tank body 1 from directly contacting the ground and getting damp or affected by ground impurities.

[0042] This device ensures the stability of the alkali tank body 1 by supporting it with outriggers 9, preventing alkali leakage due to equipment tipping and improving the safety of the device operation. At the same time, the distance between the bottom of the alkali tank body 1 and the ground facilitates the disassembly and maintenance of the lower end cap 3 of the alkali tank by operators, such as cleaning the sediment at the bottom of the tank, which solves the problem of inconvenient bottom maintenance caused by the direct placement of traditional equipment on the ground.

[0043] In one embodiment, reference Figure 2 The inlet water distribution pipe 4 is detachably connected to the tap water pipeline 1201 via a flange. During normal operation, the flange fits tightly, ensuring smooth entry of tap water into the inlet water distribution pipe 4. If the inlet water distribution pipe 4 becomes clogged due to scale or impurities, affecting tap water delivery and caustic soda dissolution, the bolts at the flange connection can be removed, and the inlet water distribution pipe 4 can be taken off the tap water pipeline 1201 for cleaning. After cleaning, it can be reconnected via the flange.

[0044] This device features a detachable flange connection design, making the cleaning and maintenance of the liquid inlet water distribution pipe 4 more convenient. It eliminates the need to disassemble the entire alkali addition device, shortening maintenance time and reducing maintenance difficulty. It also avoids problems such as insufficient tap water supply and incomplete dissolution of caustic soda flakes due to blockage of the liquid inlet water distribution pipe 4, ensuring the efficiency and quality of alkali preparation and ensuring the smooth operation of the online boiling tower of the ethanol recovery tower.

[0045] In one embodiment, reference Figure 2 The inlet water distribution pipe 4 has several outlet holes 401 on its pipe wall, and the opening direction and angle of the outlet holes 401 can be adapted to the internal space of the alkali tank body 1.

[0046] When tap water enters the alkali tank body 1 through the liquid inlet distribution pipe 4, it flows out from several outlet holes 401 on the pipe wall. Since the opening direction and angle of the outlet holes 401 are adapted to the internal space of the alkali tank body 1, the tap water will diffuse to different areas inside the alkali tank body 1, forming a multi-angle impact on the solid caustic soda flakes, while driving the liquid flow in the tank, realizing the "self-stirring" mixing of tap water and solid caustic soda flakes.

[0047] This device, through the above design, eliminates the need for additional stirring equipment. The structural design of the water outlet 401 enables thorough mixing of tap water and solid caustic soda flakes, simplifying the device structure and reducing energy consumption. The "self-stirring" effect accelerates the dissolution of solid caustic soda flakes, shortens the alkali preparation time, and makes the alkali concentration more uniform, avoiding fluctuations in alkali concentration caused by uneven dissolution of caustic soda flakes, which would affect the cleaning effect of impurities in the ethanol recovery tower and improve the stability of the boiling tower.

[0048] In one embodiment, reference Figure 2 The pore size of the filter hole 801 of the solid filter 8 is no greater than 1 mm. When the alkali solution in the alkali tank body 1 flows upward through the solid filter 8, the filter hole 801 with a pore size of no greater than 1 mm on the solid filter 8 will intercept large particles of undissolved solid alkali flakes and impurity particles mixed into the tank from the outside, allowing only the alkali solution that meets the pore size requirements to enter the outlet pipe 5 through the filter hole 801.

[0049] This device, by controlling the diameter of the filter hole 801, can completely prevent large particles from entering the feed pipe A1001 of the ethanol recovery tower 10 with the alkaline solution, avoiding pipe blockage or blockage of internal components such as the sieve holes of the tower plate. This solves the problem of pipe failure caused by impurities in traditional boiling towers. At the same time, it ensures the purity of the alkaline solution entering the ethanol recovery tower 10, preventing impurities from affecting the reaction efficiency between the alkaline solution and denatured proteins, and improving the cleaning effect of the online boiling tower.

[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An alkali addition device for an online boiling tower in an ethanol recovery tower, comprising an alkali tank body (1), characterized in that, The bottom of the alkali tank body (1) is connected to a liquid inlet water distribution pipe (4), and the liquid inlet water distribution pipe (4) can be connected to the tap water pipeline (1201) of the tap water equipment (12); a solid filter (8) is provided on the inner top of the alkali tank body (1) above the liquid inlet water distribution pipe (4), and an outlet pipe (5) is connected to the top of the alkali tank body (1). The outlet pipe (5) is connected in parallel with the feed pipeline A (1001) of the ethanol recovery tower (10) and the feed pipeline B (1101) of the raw material ethanol equipment (11).

2. The alkali addition device for an online boiling tower of an ethanol recovery tower according to claim 1, characterized in that, The top of the alkali tank body (1), that is, the top of the solid filter (8), is provided with an alkali tank upper end cap (2), and the bottom of the alkali tank body (1) is provided with an alkali tank lower end cap (3).

3. The alkali addition device for an online boiling tower in an ethanol recovery tower according to claim 1, characterized in that, The alkali tank body (1) is provided with a feeding port (6), and a detachable flange blind plate (601) is provided at the feeding port (6).

4. The alkali addition device for an online boiling tower of an ethanol recovery tower according to claim 1, characterized in that, The alkali tank body (1) is provided with a support ring (7) inside, and the solid filter (8) is installed on the inner top of the alkali tank body (1) through the support ring (7).

5. The alkali addition device for an online boiling tower of an ethanol recovery tower according to claim 1, characterized in that, A valve A (501) is installed at the outlet pipe (5), and a valve B (1102) is installed at the feed pipe B (1101).

6. The alkali addition device for an online boiling tower of an ethanol recovery tower according to claim 5, characterized in that, The valve A (501) is a flow control valve, and the flow rate of the alkaline solution entering the ethanol recovery tower (10) can be controlled by adjusting the opening degree of the valve A (501).

7. The alkali addition device for an online boiling tower in an ethanol recovery tower according to claim 1, characterized in that, The outer side of the alkali pipe body is provided with a support leg (9).

8. The alkali addition device for an online boiling tower of an ethanol recovery tower according to claim 1, characterized in that, The liquid inlet water distribution pipe (4) is detachably connected to the tap water pipe (1201) via a flange.

9. The alkali addition device for an online boiling tower in an ethanol recovery tower according to claim 1, characterized in that, The inlet water distribution pipe (4) has several outlet holes (401) on its pipe wall, and the opening direction and angle of the outlet holes (401) can be adapted to the internal space of the alkali tank body (1).

10. The alkali addition device for an online boiling tower of an ethanol recovery tower according to claim 1, characterized in that, The aperture of the filter hole (801) of the solid filter (8) is no greater than 1 mm.

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