A comprehensive utilization system for edible oil processing waste steam

Abstract

The utility model belongs to resource utilization technical field relates to a kind of edible oil processing waste steam comprehensive utilization system, including steam-water heat exchanger and warmer, steam-water heat exchanger includes shell, coil pipe, wire mesh demister, U type scraper and roller screw drive mechanism, the both ends of shell are equipped with waste steam inlet and waste steam outlet respectively, bottom is equipped with condensate outlet;The coil pipe is arranged in the shell;The wire mesh demister is arranged in the shell and is close to the position of waste gas inlet;The outside of U type scraper is attached on the inner wall of shell, the roller screw drive mechanism is connected with U type scraper, can drive U type scraper move along the axial direction of shell;The coil pipe in steam-water heat exchanger is connected in series with warmer by pipeline.The above technical scheme not only realizes the effective utilization of the heat energy of waste steam generated in the edible oil processing process, but also ensures the stable operation and efficient cleaning of the system.

Description

Technical Field

[0001] This utility model relates to a comprehensive utilization system for waste gas from edible oil processing, belonging to the field of resource utilization technology. Background Technology

[0002] The production of peanut oil involves multiple high-temperature processing steps that generate a large amount of waste steam. For example, in the steaming and roasting process, peanut embryos are first steamed and then roasted. During roasting, the temperature of the moisture contained in the embryos rises rapidly and some of it vaporizes, thus generating a large amount of waste steam. Currently, directly releasing this waste steam into the atmosphere is a common treatment method. However, waste steam contains a large amount of heat energy, and direct release will cause serious energy waste. In addition, the release of waste steam will cause thermal pollution to the surrounding environment and affect the climate.

[0003] To address these issues, some waste steam recovery and utilization systems have emerged in the industry, aiming to recover the heat energy from waste steam and achieve resource reuse.

[0004] However, the waste steam generated during peanut oil production is not pure steam; it often contains oil vapor, fine particulate impurities, and other components. These impurities easily deposit and adhere to the heat exchanger surfaces as the waste steam flows. Existing heat exchangers are typically designed to handle relatively pure fluids. If waste steam containing oil vapor and fine particulate impurities is introduced, these impurities will gradually accumulate on the heat exchanger coil surfaces over time, hindering sufficient heat exchange between the heat exchange media, affecting heat exchange efficiency, and increasing maintenance costs for the company. Utility Model Content

[0005] The purpose of this utility model is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0006] The technical solution provided by this utility model is as follows: A comprehensive utilization system for waste gas from edible oil processing includes a steam-water heat exchanger and a heater. The steam-water heat exchanger includes a shell, a coil, a wire mesh demister, a U-shaped scraper, and a roller screw drive mechanism. The shell has a waste gas inlet and a waste gas outlet at both ends, and a condensate outlet at the bottom. The coil is disposed inside the shell. The wire mesh demister is disposed inside the shell and near the waste gas inlet. The outer side of the U-shaped scraper abuts against the inner wall of the shell. The roller screw drive mechanism is connected to the U-shaped scraper and can drive the U-shaped scraper to move along the axial direction of the shell. The coil inside the steam-water heat exchanger is connected to the heater in series via pipelines.

[0007] Compared with existing technologies, the technical solution provided by this utility model has the following beneficial effects: First, by connecting the steam-water heat exchanger and the heater in series, the waste steam generated during edible oil processing can be heat-exchanged with the medium in the heater. The waste steam transfers heat to the medium in the heater in the steam-water heat exchanger, effectively utilizing the thermal energy in the waste steam and reducing energy consumption. Second, the coil, wire mesh demister, and U-shaped scraper structure installed inside the steam-water heat exchanger not only realize heat exchange between the waste steam and the medium inside the pipe, but also remove foam and impurities from the waste steam, reducing the blockage and damage to the system caused by impurities. At the same time, the U-shaped scraper is driven by a roller screw transmission mechanism and can move along the axial direction of the shell to scrape and clean the inner wall of the shell, avoiding scale and deposit accumulation on the inner wall and ensuring the stable operation of the system.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the ball screw transmission mechanism includes a ball screw, a nut, and a motor. The two ends of the ball screw are rotatably mounted in the housing via bearings. The motor is connected to the ball screw in a transmission connection. The nut is mounted on the ball screw, and the scraper is fixed on the nut.

[0010] The beneficial effect of adopting the above-mentioned further solution is that by driving the roller screw to rotate by the motor, the roller screw drives the nut and the scraper fixed on the nut to move along the axial direction of the shell, thereby realizing the automated cleaning of the inner wall of the shell and improving the cleaning efficiency and operational stability of the system.

[0011] Furthermore, a cleaning window is provided on the top of the housing, and a sealing cover is provided at the cleaning window.

[0012] The beneficial effect of adopting the above-mentioned further solution is that the sealing cover remains closed during operation; after the equipment is shut down, the sealing cover can be opened and the inside of the shell can be thoroughly rinsed with a high-pressure water gun to remove impurities and oil stains adhering to the outer wall of the heat exchange coil, so as to prevent the surface of the coil from being covered by dirt and ensure that the medium inside the shell and the medium inside the tube can fully exchange heat.

[0013] Furthermore, an opening and closing cover is provided at the lower end of the housing near the exhaust gas outlet.

[0014] The beneficial effect of adopting the above-mentioned further solution is that after the U-shaped scraper completes the scraping and cleaning operation on the inner wall of the housing, the operator can open the opening and closing cover and, with the help of gravity, smoothly discharge the dirt generated by the scraper cleaning from the housing.

[0015] Furthermore, it also includes a plate heat exchanger, wherein the steam-water heat exchanger and the plate heat exchanger are connected in parallel via pipelines.

[0016] The beneficial effects of adopting the above-mentioned further solution are that when the water flow in the heater is large, by adding a plate heat exchanger to divert part of the heating water, the water flow of the steam-water heat exchanger can be reduced, the power of the booster pump can be reduced, and the power consumption of the system can be reduced. At the same time, the plate heat exchanger can also serve as a backup heat exchange device. When the steam-water heat exchanger fails, it can be switched to the plate heat exchanger to continue working, thereby improving the reliability and stability of the system.

[0017] Furthermore, a slide rail is provided on the inner wall of the housing, and the two sides of the U-shaped scraper are slidably mounted on the slide rail.

[0018] The beneficial effect of adopting the above-mentioned further solution is that, by setting up the slide, the U-shaped scraper moves more smoothly during the process, and the guiding effect of the slide also makes the scraper cleaning operation more accurate, thus improving the cleaning effect.

[0019] Furthermore, one or more high-pressure nozzles are also provided on the inner side of the U-shaped scraper.

[0020] The beneficial effect of adopting the above-mentioned further solution is that a high-pressure nozzle is installed on the inner side of the U-shaped scraper. While the scraper is moving, the water jet from the high-pressure nozzle can be used to rinse the surface of the coil, which can effectively remove impurities and oil stains attached to the coil and ensure the heat exchange efficiency between the medium inside the shell and the medium inside the tube. Attached Figure Description

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

[0022] Figure 1 This is a diagram of the comprehensive utilization system for waste gas from edible oil processing according to this utility model;

[0023] Figure 2 This is a perspective view of the steam-water heat exchanger of this utility model;

[0024] Figure 3 This is a front view of the steam-water heat exchanger of this utility model;

[0025] Figure 4 For the present utility model Figure 3 Sectional view along axis AA;

[0026] Figure 5 This is a schematic diagram of the connection structure between the roller screw transmission mechanism and the U-shaped scraper of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the bottom cover of the steam-water heat exchanger of this utility model when it is opened;

[0028] In the diagram, 1. Steam-water heat exchanger; 101. Shell; 102. Coil; 103. Wire mesh demister; 104. U-shaped scraper; 105. Sealing cover; 106. Waste steam inlet; 107. Waste steam outlet; 108. Condensate outlet; 2. Heater; 3. Roller screw; 4. Nut; 5. Motor; 6. Opening and closing cover; 7. Plate heat exchanger; 8. High-pressure nozzle. Detailed Implementation

[0029] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the objects described and do not imply any priority in order or any specific technical meaning. Furthermore, the concepts of "connection" and "linkage" mentioned in this application, unless otherwise specified, are considered to include both direct connection (linkage) and indirect connection (linkage).

[0030] When interpreting the description of this application, it should be clarified that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating directions or positional relationships, are based on the perspective and layout shown in the accompanying drawings. They are intended to facilitate explanation and simplify the description process, and are not absolute limitations on the actual location, construction method, or operating mode of the described device or element. Therefore, these terms should not be construed as restrictive interpretations of the content of this application.

[0031] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0032] like Figures 1-6As shown, the technical solution provided by this utility model is as follows: A comprehensive utilization system for waste gas from edible oil processing includes a steam-water heat exchanger 1 and a heater 2. The steam-water heat exchanger 1 includes a shell 101, a coil 102, a wire mesh demister 103, a U-shaped scraper 104 (on which a high-pressure nozzle 8 can be installed), and a roller screw 3 transmission mechanism. Waste gas inlets 106 and waste gas outlets 107 are respectively provided at both ends of the shell 101 for the entry and exit of waste gas. A condensate outlet 108 is provided at the bottom of the shell 101. The coil 102 is disposed inside the shell 101 to realize the utilization of waste gas... Heat exchange between steam and the medium inside the pipe; the wire mesh demister 103 is located inside the housing 101 and near the waste steam inlet 106 to remove foamy substances from the waste steam; the outer side of the U-shaped scraper 104 is attached to the inner wall of the housing 101, and the roller screw drive mechanism is connected to the U-shaped scraper 104, which can drive the U-shaped scraper 104 to move along the axial direction of the housing 101 to scrape and clean the inner wall of the housing 101; the coil 102 inside the steam-water heat exchanger 1 is connected to the heater 2 in series through pipelines.

[0033] The ball screw drive mechanism includes a ball screw 3, a nut 4, and a motor 5. The two ends of the ball screw 3 are rotatably mounted inside the housing 101 via bearings. The motor 5 is drively connected to the ball screw 3. The nut 4 is mounted on the ball screw 3, and the scraper is fixed to the nut 4. Driven by the motor 5, the ball screw 3 rotates, causing the nut 4 and the scraper fixed to the nut 4 to move axially along the housing 101, thereby achieving automated cleaning of the inner wall of the housing 101 and improving the system's cleaning efficiency and operational stability.

[0034] A cleaning window is provided on the top of the housing 101, and a sealing cover 105 is provided at the cleaning window. In the working state, the sealing cover 105 is in the closed state; after the equipment is stopped, the sealing cover 105 can be opened and the inside of the housing 101 can be thoroughly rinsed using a high-pressure water gun.

[0035] A cover 6 is provided at the lower end of the housing 101 near the exhaust gas outlet 107. After the U-shaped scraper 104 completes the scraping and cleaning operation on the inner wall of the housing 101, the operator can open the cover 6 and, with the help of gravity, smoothly discharge the dirt generated by the scraper cleaning from the housing 101.

[0036] The edible oil processing waste gas comprehensive utilization system also includes a plate heat exchanger 7. The steam-water heat exchanger 1 and the plate heat exchanger 7 are connected in parallel via pipelines. It should be noted that the plate heat exchanger 7 adopts an existing structure, mainly consisting of heat exchange plates and sealing gaskets. The heat exchange plates are sealed together by the gaskets, forming multiple heat exchange channels. The plate heat exchanger 7 requires clean steam for heat exchange. When the water flow in the heater 2 is large, adding a plate heat exchanger 7 can reduce the load on the steam-water heat exchanger 1, lowering system power consumption. Furthermore, the plate heat exchanger 7 can also serve as a backup heat exchange device; when the water heat exchanger fails, it can switch to the plate heat exchanger 7 to continue operation, improving the system's reliability and stability.

[0037] The inner wall of the housing 101 is also provided with a slide rail, and the two sides of the U-shaped scraper 104 are slidably mounted on the slide rail. The slide rail makes the U-shaped scraper 104 more stable during movement, and the guiding effect of the slide rail also makes the scraper cleaning operation more precise, thus improving the cleaning effect.

[0038] The working principle of this edible oil processing waste gas comprehensive utilization system is as follows:

[0039] During the edible oil processing, the generated waste gas enters the shell 101 of the steam-water heat exchanger 1 through the waste gas inlet 106. It first passes through the wire mesh demister 103, where the foamy substances in the waste gas are removed. As the waste gas flows, it exchanges heat with the medium in the coil 102 within the shell 101, transferring heat to the heating water inside the coil. The heated water then flows through the pipes into the heater 2, providing heat energy. Part of the waste gas undergoes a phase change after heat exchange, becoming condensate, which is ultimately discharged from the system through the condensate outlet 108 at the bottom of the shell. The remaining low-temperature waste gas is discharged from the waste gas outlet 107. Driven by a roller screw transmission mechanism, the U-shaped scraper 104 moves axially along the shell 101, scraping and cleaning the inner wall of the shell 101 to prevent scale and deposits from accumulating. The cleaned contaminants are discharged through the opening and closing cover 6 below the shell 101.

[0040] When the water flow in heater 2 is high, plate heat exchanger 7, as an auxiliary heat exchange device, works in parallel with steam-water heat exchanger 1. A portion of the water flow can be diverted to plate heat exchanger 7 for heat exchange, thereby reducing the water flow in steam-water heat exchanger 1, distributing its load, reducing the power consumption of the booster pump in the system, and lowering system power consumption. Furthermore, plate heat exchanger 7 can also serve as a backup device; in the event of a failure in the steam-water heat exchanger, the system can switch to plate heat exchanger to continue operation, improving the reliability and stability of the system.

[0041] When the machine is stopped, the inside of the heat exchanger can be thoroughly cleaned. The sealing cover can be opened, and a high-pressure water gun can be used to thoroughly rinse the inside of the shell to remove impurities and oil stains adhering to the outer wall of the heat exchange coil. Then, the motor 5 is started, and the motor 5 drives the roller screw 3 to rotate, which in turn drives the nut 4 and the U-shaped scraper 104 connected to it to move axially along the shell 101, so as to scrape and clean the inner wall of the shell 101. When the U-shaped scraper 104 scrapes and cleans the inner wall of the shell 101, the operator can open the opening and closing cover 6 at the same time, and with the help of gravity, the dirt generated by the scraper cleaning can be smoothly discharged from the shell 101.

[0042] Furthermore, a high-pressure nozzle 8 is added to the inner side of the U-shaped scraper for cleaning the surface of the coil. The outer surface of the coil serves as a heat exchange surface, and dirt accumulation thereon will affect the heat exchange effect. When the U-shaped scraper scrapes the dirt off the inner wall of the shell, the high-pressure nozzle is activated simultaneously to effectively clean the surface of the coil.

[0043] The above technical solution not only enables the effective utilization of waste gas generated during edible oil processing, but also ensures the stable operation and efficient cleaning of the system.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A comprehensive utilization system of edible oil processing waste steam, characterized in that, The utility model provides a steam-water heat exchanger and a heater, the steam-water heat exchanger includes shell (101), coil pipe (102), wire mesh demister (103), U type scraper (104) and roller screw drive mechanism, both ends of shell (101) are equipped with waste steam import (106) and waste steam export (107) respectively, and the bottom of shell (101) is equipped with condensate outlet (108); The outer side of U type scraper (104) is attached to the inner wall of shell (101), the roller screw drive mechanism is connected with U type scraper (104), and can drive U type scraper (104) to move along the axial direction of shell (101); The coil pipe (102) in steam-water heat exchanger (1) is connected with heater (2) in series through pipeline.

2. The system according to claim 1, wherein The roller screw drive mechanism includes roller screw (3), nut (4) and motor (5), both ends of roller screw (3) are rotatably installed in shell (101) through bearing, motor (5) is drivingly connected with roller screw (3), nut (4) is installed on roller screw (3), and scraper is fixed on nut (4).

3. The system for comprehensive utilization of edible oil processing waste steam according to claim 1 or 2, characterized in that, Sealing cover (105) is arranged on the upper portion of shell (101).

4. The system according to claim 3, wherein Open-close cover (6) is arranged on the lower portion of shell (101) close to waste steam export (107).

5. The system according to claim 1, wherein The steam-water heat exchanger (1) is connected with the plate heat exchanger (7) in parallel through the pipeline.

6. The system according to claim 1, wherein The inner wall of shell (101) is further provided with a slide, and the two sides of the U-shaped scraper (104) are slidingly installed on the slide.

7. The system according to claim 1, wherein One or more high-pressure nozzles (8) are arranged on the inner side vertical surface of the U-shaped scraper.

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