Raw gas purification device

Abstract

The utility model relates to the technical field of semi-coke production, and particularly discloses a raw coke oven gas purification device which comprises a fan, an air collection box, a ventilation pipeline and a dust removal piece, the fan is detachably installed on one side of the air collection box, an exhaust cavity is further formed in the side, where the fan is located, of the air collection box, one end of the ventilation pipeline is communicated with the side, adjacent to the fan, in the air collection box, and the other end of the ventilation pipeline is communicated with the dust removal piece. A motor is further arranged in the air collecting box, a cooling piece is installed on the outer side of the ventilation pipeline, an ash scraping piece is arranged in the ventilation pipeline, and a transmission piece is arranged between the motor and the fan and between the motor and the ash scraping piece. The dust removal part comprises a coarse-mesh filter screen and a fine-mesh filter cage, and an adsorption layer is arranged on the inner wall of one side, close to the fan, of the fine-mesh filter cage, so that the problems that raw gas generated during traditional semi-coke production contains a large amount of dust particles, cannot be directly supplied for use and can cause harm to human bodies and the environment are solved.

Description

A raw coal gas purification device Technical Field

[0001] This application relates to the field of semi-coke production technology, and specifically discloses a raw coal gas purification device. Background Technology

[0002] Semi-coke, also known as semi-coke, gets its name from the blue flame it produces when burning. Its production is mainly through low-temperature dry distillation. It has the characteristics of high fixed carbon content, high resistivity, high chemical activity, low ash content, low aluminum content, low sulfur content, and low phosphorus content. It will gradually replace metallurgical coke and be widely used in the production of calcium carbide, ferroalloys, ferrosilicon, silicon carbide, and other products. It is widely used in chemical, metallurgical, and gasification industries, becoming an irreplaceable carbon material.

[0003] However, during the production of semi-coke, by-product coal tar and combustible raw coal gas are generated in the semi-coke production equipment. Raw coal gas refers to dusty coal gas with extremely high dust content. It cannot be directly supplied for use without treatment, let alone directly discharged, otherwise it will cause serious harm to human health and the environment. Therefore, in view of this, the inventor provides a raw coal gas purification device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that the raw coal gas produced during traditional semi-coke production contains a large amount of dust particles, which cannot be directly supplied for use and will also cause harm to human health and the environment.

[0005] To achieve the above objectives, the basic solution of this utility model provides a raw coal gas purification device, including a blower for extracting raw coal gas from semi-coke production equipment, an air collection box for installing the blower, a ventilation pipe between the semi-coke production equipment and the air collection box, and a dust removal component installed in the ventilation pipe. The blower is detachably installed on one side of the air collection box, and the air collection box is also provided with an exhaust chamber on the side where the blower is located. One end of the ventilation pipe is connected to the side of the air collection box adjacent to the blower. The air collection box is also provided with a motor for driving the blower to rotate. A cooling component for cooling the raw coal gas is installed on the outside of the ventilation pipe. A dust scraper is provided inside the ventilation pipe for scraping the inner wall of the ventilation pipe. A transmission component is provided between the motor, the blower, and the dust scraper.

[0006] The dust removal component includes a coarse-pore filter screen located on the side of the air collection box connected to the ventilation duct and fine-pore filter cages symmetrically located on the side of the coarse-pore filter screen near the air collection box. The inner wall of the fine-pore filter cage near the fan is provided with an adsorption layer.

[0007] The principle and effect of this basic scheme are as follows:

[0008] 1. This utility model, by setting a cooling component, facilitates the cooling and temperature reduction of the raw coal gas flowing in the ventilation pipe. By setting a scraper, it can prevent components in the raw coal gas that are prone to condensation and caking when cooled from caking onto the inner wall of the ventilation pipe during the cooling process, thus affecting the normal use of the ventilation pipe.

[0009] 2. Compared with existing technologies, this utility model uses a coarse-pore filter screen for initial filtration and dust removal of raw coal gas, and a fine-pore filter cage for secondary filtration and dust removal. A motor drives a fan to extract and circulate the raw coal gas. Simultaneously, a transmission component is installed between the motor, fan, and dust scraper. While using the coarse-pore and fine-pore filter cages to filter dust and the adsorption layer to adsorb impurities for dust removal and purification of the raw coal gas, it also achieves the purpose of scraping dust from the inner wall of the ventilation pipe. This prevents impurities in the raw coal gas from condensing into clumps on the inner wall of the ventilation pipe, thus avoiding its use. This solves the problem that the raw coal gas produced during traditional semi-coke production contains a large amount of dust particles, making it unsuitable for direct use and potentially harmful to human health and the environment.

[0010] Furthermore, the fine-pore filter cage has a semi-cylindrical structure. By designing the fine-pore filter cage with a structure having three sides, the smooth flow of raw coal gas is ensured, and it can also be prevented from being blocked by impurities in the raw coal gas.

[0011] Furthermore, the cooling component includes a circulating water pipe spirally wound around the outside of the ventilation pipe, a water tank for circulating water supply to the circulating water pipe, and a circulating water pump installed on the circulating water pipe. By setting up circulating water to cool the pipe wall of the ventilation pipe, the raw coal gas inside the ventilation pipe is cooled down.

[0012] Furthermore, the circulating water pipe has a rectangular cross-section. By using a rectangular circulating water pipe, the contact surface with the ventilation pipe is increased, resulting in better cooling performance.

[0013] Furthermore, the scraping component includes a rotating rod rotatably connected to the coarse-pore filter screen and a scraping bar located on the side of the rotating rod near the ventilation duct. The rotating rod is coaxially connected to the output shaft of the motor. A fixing bracket is provided inside the air collection box on the side where the motor is located to support and install the end of the rotating rod away from the scraping bar. The scraping bar has a helical blade structure, and its outer contour is tangential to the inner wall of the ventilation duct. By setting the motor to drive the rotation of the helical blade scraping bar, tangential rotation of the scraping bar on the inner wall of the ventilation duct is achieved, allowing for comprehensive scraping of the inner wall of the ventilation duct and timely removal of impurities condensed on the inner wall. The fixing bracket facilitates the installation and fixation of the rotating rod, making the connection between the rotating rod and the output shaft of the motor more stable.

[0014] Furthermore, the transmission component includes a driving bevel gear coaxially connected to the rotating rod and a driven bevel gear coaxially connected to the fan, with the driven bevel gear meshing with the driving bevel gear. By setting the driving bevel gear and the driven bevel gear, the rotation of the fan driven by the motor is achieved. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 shows a front view of a raw coal gas purification device according to an embodiment of this application;

[0017] Figure 2 shows a front sectional view of the structure of a raw coal gas purification device according to an embodiment of this application;

[0018] Figure 3 shows a structural view of a coarse-pore filter screen of a raw coal gas purification device according to an embodiment of this application. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] The reference numerals in the accompanying drawings include: fan 1, air collection box 2, ventilation pipe 3, exhaust chamber 4, motor 5, coarse mesh filter 6, fine mesh filter cage 7, circulating water pipe 8, circulating water pump 9, rotating rod 10, scraper rod 11, fixed frame 12, driving bevel gear 13, driven bevel gear 14.

[0021] An embodiment of a raw coal gas purification device is shown in Figure 1. It includes a blower 1 for extracting raw coal gas from a semi-coke production equipment, an air collection box 2 for installing the blower 1, a ventilation pipe 3 located between the semi-coke production equipment and the air collection box 2, and a dust removal component located inside the ventilation pipe 3. As shown in Figure 2, the blower 1 is detachably installed on the back side of the air collection box 2. The back side of the air collection box 2 is also provided with an exhaust chamber 4. The right end of the ventilation pipe 3 is connected to the side of the air collection box 2 adjacent to the blower 1, that is, the right end of the ventilation pipe 3 is connected to the left side wall of the air collection box 2. The air collection box 2 is also provided with a motor 5 for driving the blower 1 to rotate. As shown in Figure 1, a cooling component for cooling the raw coal gas is installed on the outer circumference of the ventilation pipe 3. As shown in Figure 2, a dust scraper is provided inside the ventilation pipe 3 for scraping the inner wall of the ventilation pipe 3. A transmission component is provided between the motor 5, the blower 1, and the dust scraper.

[0022] As shown in Figures 1, 2 and 3, the dust removal component includes a coarse-pore filter screen 6 disposed on the left side wall of the air collection box 2 and a fine-pore filter cage 7 symmetrically disposed on the right end face of the coarse-pore filter screen 6. The fine-pore filter cage 7 has a semi-cylindrical structure, and the inner wall of the back side of the fine-pore filter cage 7 is provided with an adsorption layer, which includes, but is not limited to, activated carbon.

[0023] Specifically, as shown in Figures 1 and 2, the cooling component includes a circulating water pipe 8 spirally wound around the outside of the ventilation pipe 3, a water tank for circulating water supply to the circulating water pipe 8, and a circulating water pump 9 installed on the circulating water pipe 8. The circulating water pipe 8 has a rectangular cross-section.

[0024] Specifically, as shown in Figures 2 and 3, the dust scraper includes a rotating rod 10 rotatably connected to the coarse-pore filter screen 6 and a dust scraper 11 located at the left end of the rotating rod 10. The rotating rod 10 is coaxially connected to the output shaft of the motor 5. The right side wall of the air collection box 2 is provided with a fixing bracket 12 for supporting and installing the right end of the rotating rod 10. The dust scraper 11 has a spiral blade-shaped structure, and the outer contour of the dust scraper 11 is tangent to the inner wall of the ventilation pipe 3.

[0025] Specifically, as shown in Figure 2, the transmission component includes a driving bevel gear 13 coaxially connected to the rotating rod 10 and a driven bevel gear 14 coaxially connected to the fan 1. The driven bevel gear 14 meshes with the driving bevel gear 13.

[0026] In the specific implementation of this utility model, firstly, the motor 5 drives the rotating rod 10 to rotate, and the rotating rod 10 drives the scraper rod 11 to rotate and scrape tangentially against the inner wall of the ventilation pipe 3. At the same time, the driving bevel gear 13 on the rotating rod 10 also rotates, which in turn drives the driven bevel gear 14 to rotate. The fan 1, which is coaxially connected to the driven bevel gear 14, also rotates accordingly. By driving the flow of raw coal gas in the ventilation pipe 3, air collection and extraction are achieved. During the flow of raw coal gas in the ventilation pipe 3, the circulating water pump 9 also works simultaneously, pressurizing the water and circulating it inside the circulating water pipe 8 to cool the pipe wall of the ventilation pipe 3, thereby achieving the cooling of the ventilation pipe 3. The raw coal gas undergoes a cooling process. After cooling, components in the raw coal gas that condense upon cooling are directly condensed into lumps on the inner wall of the ventilation pipe 3. These lumps are then scraped off by the scraper rod 11. The raw coal gas is then drawn by the blower 1 to the coarse-pore filter 6 and stopped. As the raw coal gas flows through the ventilation pipe 3 to the coarse-pore filter 6, dust and impurities in the raw coal gas are initially blocked in front of the coarse-pore filter 6. Finer dust and impurities pass through the coarse-pore filter 6 and are blocked in the fine-pore filter cage 7. At the same time, due to the airflow direction of the blower 1, all impurities in the raw coal gas are adsorbed onto the adsorption layer. The purified raw coal gas is then extracted by the blower 1 and discharged through the exhaust chamber 4.

[0027] Compared with existing technologies, this utility model uses a coarse-pore filter screen 6 to perform preliminary filtration and dust removal on the raw coal gas, and a fine-pore filter cage 7 to achieve secondary filtration and dust removal. Utilizing a motor 5 and driving bevel gears 13 and 14, it not only scrapes ash from the inner wall of the ventilation pipe 3, preventing impurities in the raw coal gas from condensing into clumps and affecting the use of the ventilation pipe 3, but also drives the fan 1 to extract and circulate the raw coal gas. By using the coarse-pore filter screen 6 and the fine-pore filter cage 7 to filter dust and the adsorption layer to adsorb impurities, the raw coal gas is purified and dust removal is achieved. This solves the problem that the raw coal gas produced during traditional semi-coke production contains a large amount of dust particles, making it unsuitable for direct use and potentially harmful to human health and the environment.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A raw coal gas purification device, characterized in that: The system includes a blower for extracting raw coal gas from the semi-coke production equipment, an air collection box for installing the blower, a ventilation pipe between the semi-coke production equipment and the air collection box, and a dust removal component installed in the ventilation pipe. The blower is detachably installed on one side of the air collection box, which also has an exhaust chamber on the side where the blower is located. One end of the ventilation pipe is connected to the side of the air collection box adjacent to the blower. The air collection box also has a motor for driving the blower. A cooling component for cooling the raw coal gas is installed on the outside of the ventilation pipe. A dust scraper is installed inside the ventilation pipe for scraping the inner wall of the ventilation pipe. A transmission component is provided between the motor, the blower, and the dust scraper. The dust removal component includes a coarse-pore filter screen on the side of the air collection box connected to the ventilation pipe and fine-pore filter cages symmetrically arranged on the side of the coarse-pore filter screen near the air collection box. The inner wall of the fine-pore filter cage near the blower has an adsorption layer.

2. The raw coal gas purification device according to claim 1, characterized in that, The fine-pore filter cage has a semi-cylindrical structure.

3. The raw coal gas purification device according to claim 1, characterized in that, The cooling component includes a circulating water pipe spirally wound around the outside of the ventilation pipe, a water tank for circulating water supply to the circulating water pipe, and a circulating water pump installed on the circulating water pipe.

4. The raw coal gas purification device according to claim 3, characterized in that, The cross-section of the circulating water pipe is rectangular.

5. The raw coal gas purification device according to claim 1, characterized in that, The dust scraper includes a rotating rod rotatably connected to a coarse-pore filter screen and a dust scraper rod located on the side of the rotating rod near the ventilation pipe. The rotating rod is coaxially connected to the output shaft of the motor. A fixing frame is provided in the air collection box on the side where the motor is located to support and install the end of the rotating rod away from the dust scraper rod. The dust scraper rod has a spiral blade-like structure, and the outer contour of the dust scraper rod is tangent to the inner wall of the ventilation pipe.

6. The raw coal gas purification device according to claim 5, characterized in that, The moving part includes a driving bevel gear coaxially connected to the rotating rod and a driven bevel gear coaxially connected to the fan, with the driven bevel gear meshing with the driving bevel gear.

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