Efficient flue gas emission mechanism of dry quenching furnace

Abstract

The utility model belongs to the technical field of coke oven flue gas treatment, and particularly relates to an efficient flue gas discharge mechanism of a dry quenching furnace, which comprises a dry quenching furnace body, a primary dust remover, an ash vibration component, a secondary dust remover and an ash scraping component, the dry quenching furnace body is communicated with a gas inlet of the primary dust remover, the ash vibration component comprises a plurality of groups of vibrators, and the secondary dust remover is communicated with a gas outlet of the secondary dust remover. The secondary dust remover is symmetrically and fixedly connected with the primary dust remover, an air inlet of the secondary dust remover is communicated with an air outlet of the primary dust remover through the waste heat boiler, the ash scraping assembly is rotationally connected with an inner cavity of the secondary dust remover and comprises a power source, a supporting frame and a brush, the supporting frame is fixedly connected with an output shaft of the power source, and the brush is fixedly connected with the supporting frame. The primary dust remover and the secondary dust remover are respectively provided with an ash discharge port, the ash discharge ports face the scraper, and an air outlet of the secondary dust remover is communicated with the dry quenching furnace body through a circulating fan and a water supply preheater. The dry quenching furnace has the beneficial effects that the dust attachment or blockage condition in the dust removers is improved, and the high efficiency of gas emission of the dry quenching furnace is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of coke oven smoke treatment, in particular to a smoke high-efficiency emission mechanism for a dry quenching furnace. Background Art

[0002] The so-called dry coke quenching process refers to a coke quenching process method that uses inert gas to cool down red coke. Due to the combustion and high-temperature oxidation reaction of coke, a large amount of smoke and harmful gases will be generated, which seriously pollutes the environment and affects the health of workers. In order to reduce the emission of harmful flue gas during the dry coke quenching production process, the coking plant has taken a series of measures, using advanced dust removal and purification technology, and using multi-stage dust collectors to control smoke and harmful gases. However, in actual production applications, air leakage or low flue gas temperature can easily lead to dust adhesion. Sticky dust adheres to the inner wall of the dust collector, reducing the available space in the inner cavity of the dust collector, and the exhaust volume will decrease, thereby affecting the dust removal effect and gas emission efficiency. In addition, after settling, the dust is concentrated at the ash outlet of the primary dust collector. It is easy for the dust to block the ash outlet due to a long cleaning cycle or untimely ash discharge. If the machine is shut down for maintenance, it will affect the working efficiency of the dry quenching furnace. Utility Model Content

[0003] The utility model aims at the above-mentioned problems and specifically designs a smoke high-efficiency emission mechanism for a CDQ furnace, so as to improve the adhesion or blockage of dust in the dust collector and enhance the high efficiency of the CDQ furnace gas emission.

[0004] To achieve the above-mentioned purpose, the utility model provides a high-efficiency smoke emission mechanism for a dry quenching furnace, comprising a dry quenching furnace body, a primary dust collector, an ash vibrating assembly, a secondary dust collector and an ash scraping assembly, the dry quenching furnace body is connected to the air inlet of the primary dust collector, the ash vibrating assembly is fixedly connected to the primary dust collector, the air inlet of the secondary dust collector is connected to the air outlet of the primary dust collector, and the ash scraping assembly is rotatably connected to the inner cavity of the secondary dust collector; the primary dust collector and the secondary dust collector are both provided with an ash lowering port, and the ash lowering port faces the scraper.

[0005] By adopting the above technical scheme, the primary dust collector is used for the first dust removal of the flue gas flowing out of the dry quenching furnace body, and the coarse particles of smoke in the smoke are separated; the secondary dust collector is used for the secondary dust removal of the smoke, and the fine particles of smoke are separated to improve the dust removal effect on the smoke; the ash vibrating component is used for the vibration of the primary dust collector to drop the ash, so as to avoid the clogging of the ash outlet by the settled smoke, and at the same time it can improve the adhesion of dust in the primary dust collector and increase the utilization space of the primary dust collector; the ash scraping component is used for scraping the fallen ash of the secondary dust collector, so as to increase the utilization space and increase the exhaust volume, thereby enhancing the efficiency of the smoke emission of the dry quenching furnace.

[0006] Furthermore, the ash vibration assembly is a plurality of groups of vibrators, which are symmetrically and fixedly connected to the primary dust collector.

[0007] By adopting the above technical solution, the vibrator is used to transmit exciting force to the primary dust collector, so as to promote the falling of smoke and dust deposited at the ash outlet, and effectively solve the problem of smoke and dust blocking the ash outlet.

[0008] Furthermore, the scraping assembly includes a power source, a support frame and a brush. The support frame and the brush are both arranged in the inner cavity of the secondary dust collector. The support frame is fixedly connected to the output shaft of the power source, and the brush is fixedly connected to the support frame.

[0009] By adopting the above technical solution, the power source is used for outputting power of the scraping assembly, and the support frame is used for transmitting the power outputted by the power source to the brush, while providing supporting force to the brush.

[0010] Furthermore, the primary dust collector and the secondary dust collector are both funnel-shaped.

[0011] By adopting the above technical solution, the funnel-shaped structure facilitates the collection and discharge of dust, thereby improving the efficiency of dust particles falling into the scraper.

[0012] Furthermore, the support frame matches the shape and size of the inner cavity of the secondary dust collector.

[0013] By adopting the above technical solution, the shapes and sizes of the two are matched with each other, so that the brush fits the inner wall of the secondary dust collector more closely, thereby improving the scraping effect.

[0014] Furthermore, the air inlet of the secondary dust collector is connected to the air outlet of the primary dust collector through a waste heat boiler.

[0015] By adopting the above technical solution, the waste heat boiler is used to recover and utilize the waste heat emitted during the CDQ furnace production process, thereby realizing energy reuse, improving economic benefits, and playing a positive role in energy conservation, emission reduction and environmental protection.

[0016] Furthermore, the air outlet of the secondary dust collector is connected to the CDQ furnace body through a circulating fan and a feed water preheater.

[0017] By adopting the above technical solution, the circulating fan will lead the gas after secondary dust removal and purification back to the CDQ furnace body, so as to realize the reuse of flue gas, reduce energy consumption and reduce environmental pollution; the feed water preheater is used to further reduce the temperature of the circulating gas, which plays a role in reducing energy consumption and improving the quality of coke.

[0018] In summary, the utility model has the following advantages and beneficial technical effects:

[0019] 1. The utility model utilizes an ash vibrating assembly to transmit an exciting force to a primary dust collector, thereby causing the smoke and dust deposited at the ash outlet to fall, effectively solving the problem of smoke and dust blocking the ash outlet, and at the same time improving the adhesion of dust in the primary dust collector and increasing the available space of the inner cavity; the ash scraping assembly is used to scrape off the fallen dust of the secondary dust collector, and utilizes a brush to scrape off the dust particles attached to the inner wall, thereby increasing the available space and the exhaust volume, thereby enhancing the efficiency of the flue gas emission of the dry quenching furnace; the support frame is matched with the shape and size of the secondary dust collector, so that the brush fits the inner wall of the secondary dust collector and improves the scraping effect.

[0020] 2. The primary dust collector is used for the first dust removal of the flue gas flowing out of the dry quenching furnace body, separating the coarse particles of smoke in the smoke; the secondary dust collector is used for the secondary dust removal of the flue gas, separating the fine particles of smoke and improving the dust removal effect of the flue gas; the funnel-shaped structure facilitates the collection and discharge of dust, and improves the efficiency of dust particles falling into the scraper.

[0021] 3. The waste heat boiler is used to recover and utilize the waste heat emitted during the CDQ furnace production process, realize energy reuse, improve economic benefits, and play a positive role in energy conservation, emission reduction and environmental protection; the circulating fan will lead the gas after secondary dust removal and purification back to the CDQ furnace body to realize the reuse of flue gas, reduce energy consumption and reduce environmental pollution; the feed water preheater is used to further reduce the temperature of the circulating gas, which plays a role in reducing energy consumption and improving coke quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 It is a diagram of the use state of the vibration component in the utility model;

[0025] Figure 3 This is a diagram showing the use status of the scraping component in the utility model;

[0026] Figure 4 It is a structural schematic diagram of the scraping component in the utility model.

[0027] The reference numerals in the accompanying drawings are:

[0028] 1. CDQ furnace body; 2. Primary dust collector; 3. Vibrator; 4. Secondary dust collector;

[0029] 5. Scraping assembly; 51. Power source; 52. Support frame; 53. Brush;

[0030] 6. Scraper conveyor; 7. Waste heat boiler; 8. Circulation fan; 9. Feed water preheater. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-Figure 4 The utility model is further described in detail:

[0032] like Figure 1-Figure 4 As shown, the present embodiment discloses a smoke efficient emission mechanism of a dry quenching furnace, comprising a dry quenching furnace body 1, a primary dust collector 2, an ash vibrating assembly, a secondary dust collector 4 and an ash scraping assembly 5. The dry quenching furnace body 1 is connected with the air inlet of the primary dust collector 2 through a pipeline, the ash vibrating assembly is fixedly connected with the primary dust collector 2, the air inlet of the secondary dust collector 4 is connected with the air outlet of the primary dust collector 2, the ash scraping assembly 5 is rotatably connected with the inner cavity of the secondary dust collector 4, the primary dust collector 2 and the secondary dust collector 4 are both provided with an ash lowering port, a scraper 6 is arranged directly below the ash lowering port, and the opening direction of the ash lowering port is toward the transmission end of the scraper 6; the ash vibrating assembly is two groups of vibrators 3, the vibrators 3 are symmetrically arranged and fixedly connected to the outer wall of the primary dust collector 2; the ash scraping assembly 5 comprises a power source 51, a support frame 52 and a brush 53, the power source 51 is a motor, which is fixedly arranged on the outer wall of the primary dust collector 2 through a mounting plate At the discharge port end of the secondary dust collector 4, the support frame 52 and the brush 53 are all arranged in the inner cavity of the secondary dust collector 4, the support frame 52 is fixedly connected to the output shaft of the power source 51 through a flange, and the brush 53 has multiple groups, which are fixedly connected to the support frame 52 by fastening screws; the primary dust collector 2 and the secondary dust collector 4 are both funnel-shaped; the support frame 52 matches the shape and size of the inner cavity of the secondary dust collector 4, the support frame 52 includes a sleeve end, an oblique rod and a vertical rod, the sleeve end is fixedly connected to the output shaft of the power source 51, there are two oblique rods, which are symmetrically welded on both sides of the sleeve end, and there are two vertical rods, which are fixedly connected to the oblique rods on both sides of the sleeve end, and the vertical rods and the oblique rods are an integrally formed structure; the air inlet of the secondary dust collector 4 is connected to the air outlet of the primary dust collector 2 through the waste heat boiler 7; the air outlet of the secondary dust collector 4 is connected to the dry quenching furnace body 1 through the circulating fan 8 and the feed water preheater 9.

[0033] The working principle of the smoke high-efficiency emission mechanism of the dry quenching furnace of the utility model is:

[0034] 1. The mechanism comprises a dry quenching furnace body 1, a primary dust collector 2, an ash vibrating assembly, a secondary dust collector 4 and an ash scraping assembly 5. The dry quenching furnace body 1 is connected to the air inlet of the primary dust collector 2 through a pipeline, the ash vibrating assembly is fixedly connected to the primary dust collector 2, the air inlet of the secondary dust collector 4 is connected to the air outlet of the primary dust collector 2, the ash scraping assembly 5 is rotatably connected to the inner cavity of the secondary dust collector 4, the primary dust collector 2 and the secondary dust collector 4 are both provided with ash outlets, and a scraper 6 is provided directly below the ash outlet, and the opening direction of the ash outlet is toward the transmission end of the scraper 6; the red coke is discharged from the dry quenching furnace The feed port of the main body 1 is loaded, and in the inner cavity of the dry quenching furnace main body 1, the hot coke contacts with the cold inert gas in reverse to exchange heat, the red coke is cooled, and the high-temperature inert gas after absorbing heat enters the primary dust collector 2, and enters the secondary dust collector 4 after separating the coarse dust particles, and further separates the fine dust particles. The separated dust settles to the ash outlet and is transported outward by the scraper 6. The ash vibrating component shakes off the dust blocked at the ash outlet of the primary dust collector 2, and the ash scraping component 5 scrapes off the dust attached to the inner cavity of the secondary dust collector 4 by its own rotation to achieve dust cleaning.

[0035] 2. The ash vibration assembly is composed of two groups of vibrators 3, which are symmetrically arranged and fixedly connected to the outer wall of the primary dust collector 2; the vibrators 3 provide exciting force to the primary dust collector 2 by means of vibration, and vibrate the dust accumulated and blocked in the inner cavity to the ash outlet at the bottom, thereby achieving the purpose of ash discharge.

[0036] 3. The scraping assembly 5 includes a power source 51, a support frame 52 and a brush 53. The power source 51 is a motor, which is fixedly arranged at the discharge port end of the secondary dust collector 4 through a mounting plate. The support frame 52 and the brush 53 are both arranged in the inner cavity of the secondary dust collector 4. The support frame 52 is fixedly connected to the output shaft of the power source 51 through a flange. There are multiple groups of brushes 53, which are fixedly connected to the support frame 52 through fastening screws. The power source 51 outputs power to drive the support frame 52 and the brush 53 on the support frame 52 to rotate synchronously, so as to sweep away the dust particles attached to the inner cavity of the secondary dust collector 4, thereby cleaning the inner cavity of the secondary dust collector 4.

[0037] 4. The primary dust collector 2 and the secondary dust collector 4 are both funnel-shaped. Dust and other particulate matter will settle to the bottom of the funnel due to their own weight, realizing centralized dust cleaning and discharge.

[0038] 5. The support frame 52 matches the shape and size of the inner cavity of the secondary dust collector 4. The support frame 52 includes a sleeve end, an oblique rod and a vertical rod. The sleeve end is fixedly connected to the output shaft of the power source 51. There are two oblique rods, which are symmetrically welded on both sides of the sleeve end. There are two vertical rods, which are respectively fixedly connected to the oblique rods on both sides of the sleeve end. The vertical rod and the oblique rod are an integrally formed structure; the sleeve end carries the power transmitted by the power source 51, and while rotating, it drives the integrally formed vertical rod and oblique rod to rotate synchronously. At this time, the brush 53 fits the inner wall of the secondary dust collector 4 to scrape off the dust.

[0039] 6. The air inlet of the secondary dust collector 4 is connected to the air outlet of the primary dust collector 2 through the waste heat boiler 7. The high-temperature inert gas flows through the waste heat boiler 7, and the waste heat in the flue gas is used to heat the water to a certain temperature, thereby realizing the recovery of the waste heat in the flue gas.

[0040] 7. The gas outlet of the secondary dust collector 4 is connected to the CDQ furnace body 1 through the circulating fan 8 and the feed water preheater 9. After the flue gas is further separated from the dust by the secondary dust collector 4, it is transported to the feed water preheater 9 by the circulating fan 8 for cooling, and then enters the CDQ furnace body 1 to realize the recycling of the gas.

[0041] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A smoke efficient exhaust mechanism for a dry quenching furnace, characterized in that: It includes a dry quenching furnace body, a primary dust collector, an ash vibrating assembly, a secondary dust collector and an ash scraping assembly, the dry quenching furnace body is connected with the air inlet of the primary dust collector, the ash vibrating assembly is fixedly connected with the primary dust collector, the air inlet of the secondary dust collector is connected with the air outlet of the primary dust collector, and the ash scraping assembly is rotatably connected with the inner cavity of the secondary dust collector; the primary dust collector and the secondary dust collector are both provided with ash lowering ports, and the ash lowering ports face the scraper.

2. The high-efficiency smoke emission mechanism of a CDQ furnace according to claim 1 is characterized in that: The ash vibrating assembly is a plurality of groups of vibrators fixedly connected to the primary dust collector.

3. The high-efficiency smoke emission mechanism of a CDQ furnace according to claim 2 is characterized in that: The scraping assembly includes a power source, a support frame and a brush. The support frame and the brush are both arranged in the inner cavity of the secondary dust collector. The support frame is fixedly connected to the output shaft of the power source, and the brush is fixedly connected to the support frame.

4. The high-efficiency smoke emission mechanism of a CDQ furnace according to claim 3 is characterized in that: The primary dust collector and the secondary dust collector are both funnel-shaped.

5. The high-efficiency smoke emission mechanism of a CDQ furnace according to claim 4 is characterized in that: The support frame matches the shape and size of the inner cavity of the secondary dust collector.

6. The high-efficiency smoke emission mechanism of a CDQ furnace according to claim 5, characterized in that: The air inlet of the secondary dust collector is connected to the air outlet of the primary dust collector through a waste heat boiler.

7. The high-efficiency smoke emission mechanism of a CDQ furnace according to claim 6, characterized in that: The air outlet of the secondary dust collector is connected to the dry quenching furnace body through a circulating fan and a feed water preheater.

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