Semi-coke discharging and conveying system

Abstract

The utility model discloses a semi-coke discharging and conveying system, and relates to the technical field of coal processing. The technical key points are as follows: the coke discharging device comprises a coke discharging box, the lower end of the coke discharging box is arranged below a coke pusher at the bottom of the carbonization furnace, and the upper end of the coke discharging box is arranged above a feed port of a stock bin; a scraper conveyor is arranged in the coke discharging box, and a material receiving opening is formed in the position, corresponding to the coke pushing machine, of the upper side of the lower end of the coke discharging box; a discharge hole is formed in the lower side of the upper end of the coke discharging box and is positioned above the feed hole in the top of the stock bin. The scraper conveyor arranged in the coke pushing box is used for conveying semi-coke, and compared with an existing semi-coke discharging system adopting a conveying belt, the high-temperature-resistant semi-coke discharging system has the advantages that the high-temperature-resistant effect is obviously better, semi-coke with a certain temperature can be stably and efficiently conveyed for a long time, and the fault rate of the whole system is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of coal processing, and in particular to a semi-coke coke removal and transportation system. Background Art

[0002] Semi-coke is also called semi-coke. Semi-coke has the characteristics of low ash, low sulfur, low phosphorus, low aluminum, high fixed carbon ratio, high chemical activity, high specific resistivity, good grindability, etc. It can be widely used in metallurgy, chemical industry, clean fuel, coke and adsorbent fields, etc. In the metallurgy field, it can be mainly used as a reducing agent for ferroalloys and blast furnace injection materials; in the chemical industry, it can be used as a calcium carbide reducing agent, fertilizer gasification raw material, gasification synthesis gas, etc.; in the clean fuel field, it can be mainly used as civil fuel and power plant fuel; in the coke and adsorbent field, it is mainly used as civil coke or casting coke, semi-coke-based adsorbent.

[0003] The existing semi-coke production generally involves feeding bituminous coal or lignite raw materials into the semi-coke furnace through the feed port, and then generating semi-coke and semi-coke tail gas after preheating and carbonization. The carbonized semi-coke moves from top to bottom in the carbonization furnace, is discharged from the coke discharge port of the carbonization furnace, and falls onto the coke tray. The coke pusher on the coke tray moves back and forth horizontally, thereby continuously pushing the extinguished semi-coke away from the coke tray. The semi-coke falling from the coke tray will fall onto the conveyor, and then be transferred to the semi-coke silo through the conveyor.

[0004] Existing conveying devices often use a single conveyor belt. The temperature of the semi-coke after it is discharged from the coke outlet of the carbonization furnace is about 500°C. Although it will undergo cooling treatment (currently water spraying or steam quenching is mostly used), the temperature is still relatively high. These high-temperature semi-cokes are in contact with the conveyor belt for a long time, which can easily affect the service life of the conveyor belt and increase the failure rate of the equipment. Utility Model Content

[0005] The present application provides a blue coke conveying system, which can efficiently and stably convey the blue coke discharged from a carbonization furnace to a silo for a long time.

[0006] The above-mentioned purpose of the present application is achieved through the following technical solutions:

[0007] A blue coke coke delivery system comprises a coke discharge box, wherein the coke discharge box is arranged as a whole between a carbonization furnace and a silo in an inclined manner, and the lower end of the coke discharge box is arranged horizontally below a coke pusher at the bottom of the carbonization furnace, and the upper end of the coke discharge box is arranged horizontally above a feed port of the silo; the body of the coke discharge box is fixedly mounted on the ground by a plurality of legs;

[0008] A scraper conveyor is arranged in the coke discharge box, and the scraper on the lower side of the scraper conveyor is in contact with the lower side wall of the coke discharge box; a material receiving port is arranged on the upper side of the lower end of the coke discharge box at a position corresponding to the coke pusher, and the semi-coke discharged by the coke pusher can fall into the coke discharge box from the material receiving port and contact with the scraper conveyor;

[0009] A discharge port is provided on the lower side of the upper end of the coke discharge box, and the discharge port is located above the feed port at the top of the silo. When the scraper conveyor lifts the blue coke to the discharge port, it can be discharged into the silo through the discharge port.

[0010] Furthermore, two coke discharge boxes are arranged side by side between the silo and the carbonization furnace, and one of the scraper conveyors is arranged in each of the two corresponding coke discharge boxes.

[0011] Furthermore, a cover plate is provided at the feed port on the top of the silo, and the discharge ports of the two coke discharge boxes are respectively fixedly connected to the cover plate through an extension tube, and the two extension tubes are both connected to the internal space of the silo.

[0012] Furthermore, a material receiving and distributing assembly is provided above the material receiving openings of the two coke discharge boxes, and the material receiving and distributing assembly can evenly distribute the lignite product to the two material receiving openings.

[0013] Further, the material receiving and distributing assembly comprises a material receiving hopper, the lower end of which is sleeved on the outer sides of the two material receiving ports, two material blocking side plates are symmetrically arranged in the middle of the material receiving ports, and the two material blocking side plates are respectively fixedly mounted on the mutually close sides of the two material receiving ports;

[0014] An arc-shaped material dividing plate is provided directly above the middle position of the two material-blocking side plates, and the arc-shaped material dividing plate is fixedly connected to the inner wall of the receiving hopper; the concave side of the arc-shaped material dividing plate faces downward, and the two ends of the arc-shaped material dividing plate in the width direction are respectively located directly above the two material receiving ports.

[0015] Furthermore, the silo includes a top silo and a bottom silo arranged in sequence from top to bottom, the top silo and the bottom silo are installed on the ground through a fixing frame, a first valve is provided between the top silo and the bottom silo, and a second valve is provided below the bottom silo.

[0016] Furthermore, a maintenance platform is installed on the top of the fixing frame, a protective railing is provided around the maintenance platform, and a maintenance ladder is installed on one side of the maintenance platform.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] The semi-coke produced after the coal raw materials are processed in the carbonization furnace will fall on the coke support plate. The coke pusher on the coke support plate will push the semi-coke to the receiving port at the lower end of the coke discharge box. After the semi-coke enters the coke discharge box, it will fall on the scraper conveyor in the coke discharge box. The scraper of the scraper conveyor can cooperate with the lower side wall of the coke discharge box during the movement to transport the semi-coke to the discharge port at the top of the coke discharge box. After the semi-coke is discharged from the discharge port of the coke discharge box, it will fall into the silo. The transmission equipment used in this application to transport semi-coke is a scraper conveyor. The scraper conveyor is basically a metal structure. Compared with the current semi-coke discharge system using a conveyor belt, the high temperature resistance of this application is significantly better, and semi-coke with a certain temperature can be transported stably and efficiently for a long time, reducing the failure rate of the entire system. Moreover, in the process of transporting semi-coke, the coke discharge box of this application can isolate the semi-coke on the scraper conveyor from the external environment, thereby protecting the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of this application;

[0021] Figure 2 It is a schematic diagram of the structure after the arc-shaped material distribution plate in the material receiving and distributing assembly of the present application is removed;

[0022] Figure 3 This application is a schematic diagram of the structure after one of the extension tubes of the application is partially cut open;

[0023] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0024] Figure numerals: 1. coke discharge box; 2. silo; 21. top silo; 22. bottom silo; 23. fixed frame; 24. first valve; 25. second valve; 3. support leg; 4. scraper conveyor; 6. material receiving port; 7. material discharge port; 8. cover plate; 9. extension pipe; 10. material receiving and distribution assembly; 101. material receiving hopper; 102. material blocking side plate; 103. arc-shaped material dividing plate; 11. maintenance platform; 12. guardrail; 13. maintenance ladder. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0026] like Figure 1-Figure 3 As shown, a semi-coke coke discharge and conveying system disclosed in the present application comprises a coke discharge box 1, which is tilted as a whole between the carbonization furnace and the silo 2, and the lower end of the coke discharge box 1 is horizontally arranged below the coke pusher at the bottom of the carbonization furnace, and the upper end of the coke discharge box 1 is horizontally arranged above the feed port of the silo 2; the box body of the coke discharge box 1 is fixedly mounted on the ground by a plurality of legs 3; a scraper conveyor 4 is arranged in the coke discharge box 1, and the scraper on the lower side of the scraper conveyor 4 is in contact with the lower side wall of the coke discharge box 1; a material receiving port 6 is arranged on the upper side of the lower end of the coke discharge box 1 at a position corresponding to the coke pusher, and the semi-coke discharged by the coke pusher can fall into the coke discharge box 1 from the material receiving port 6 and contact with the scraper conveyor 4; a discharge port 7 is arranged on the lower side of the upper end of the coke discharge box 1, and the discharge port 7 is located above the feed port at the top of the silo 2, and when the scraper conveyor 4 lifts the semi-coke to the discharge port 7, it can be discharged into the silo 2 through the discharge port 7.

[0027] In the above embodiments, after the semi-coke produced by the carbonization furnace falls onto the coke supporting plate, the reciprocating motion of the coke pusher on the coke supporting plate can push the semi-coke into the receiving port 6 at the lower end of the coke discharge box 1, and then the semi-coke will continue to fall to the bottom of the coke discharge box 1 under the action of gravity until it falls to the bottom of the coke discharge box 1. Since the scraper on the lower side of the scraper conveyor 4 arranged in the coke discharge box 1 is in contact with the lower side wall of the coke discharge box 1, when the scraper conveyor 4 rotates in the coke discharge box 1, the scraper close to the lower side of the coke discharge box 1 will continuously scrape the semi-coke at the bottom of the coke discharge box 1 upwards during the movement until the semi-coke is transported to the discharge port 7 at the upper end of the coke discharge box 1. Since the discharge port 7 of the coke discharge box 1 is just opposite to the feed port at the top of the silo 2, the semi-coke discharged from the discharge port 7 of the coke discharge box 1 will automatically fall into the silo 2.

[0028] Compared with the prior art that uses a belt conveyor to transport the semi-coke discharged from the carbonization furnace, the scraper conveyor 4 that is entirely made of metal has a significantly better high temperature resistance effect, and can stably and efficiently transport semi-coke at a certain temperature for a long time, effectively reducing the failure rate of the entire system. Moreover, the coke discharge box 1 set on the outside of the scraper conveyor 4 of the present application can prevent the dust or high temperature generated by the semi-coke from causing negative impacts on the surrounding workers or the environment during the process of transporting the semi-coke. In addition, compared with the belt conveyor, the scraper conveyor 4 used in the present application has a solid structure and can withstand external forces such as impact, collision, smashing, and pressing of the semi-coke. Moreover, the scraper conveyor 4 has a simple structure and can be fed or unloaded at any point along the conveying length. When an accident occurs to the bottom chain, it can also run in reverse, which is convenient for workers to handle the bottom chain accident.

[0029] Furthermore, if Figure 1-Figure 3 As shown, two coke discharge boxes 1 are arranged side by side between the silo 2 and the carbonization furnace, and a scraper conveyor 4 is respectively arranged in the two corresponding coke discharge boxes 1 .

[0030] In the above embodiments, by arranging two scraper conveyors 4 between the silo 2 and the carbonization furnace, the efficiency of conveying the blue coal to the silo 2 can be effectively improved.

[0031] Furthermore, if Figure 2-Figure 4 As shown, a cover plate 8 is provided at the feed port on the top of the silo 2 , and the discharge ports 7 of the two coke discharge boxes 1 are fixedly connected to the cover plate 8 via an extension tube 9 respectively, and the two extension tubes 9 are both connected to the internal space of the silo 2 .

[0032] In the above embodiment, the cover plate 8 on the top of the silo 2 can prevent the blue coke dust in the silo 2 from polluting the surrounding environment, and can also prevent the impurities in the external environment from polluting the blue coke in the silo 2. The discharge port 7 of the coke discharge box 1 is connected to the internal space of the silo 2 through the extension pipe 9, which can ensure that the blue coke will not leak dust into the environment in the last link of transportation.

[0033] Furthermore, if Figure 1 and Figure 2 As shown, a material receiving and distributing assembly 10 is provided above the material receiving openings 6 of the two coke discharge boxes 1 , and the material receiving and distributing assembly 10 can evenly distribute the semi-coke product to the two material receiving openings 6 .

[0034] In the above embodiments, after the coke pusher under the carbonization furnace discharges the lignite, the lignite will first contact the material receiving and distributing assembly 10, which can evenly distribute the lignite to the scraper conveyors 4 in the two coke discharge boxes 1, thereby ensuring that the two scraper conveyors 4 can operate at equal loads.

[0035] Furthermore, if Figure 1 and Figure 2As shown, the material receiving and distributing assembly 10 includes a material receiving hopper 101, the lower end of which is sleeved on the outer sides of the two material receiving ports 6, and two material blocking side plates 102 are symmetrically arranged in the middle of the material receiving ports 6, and the two material blocking side plates 102 are respectively fixedly installed on the mutually close sides of the two material receiving ports 6;

[0036] An arc-shaped material dividing plate 103 is provided directly above the middle position of the two material blocking side plates 102, and the arc-shaped material dividing plate 103 is fixedly connected to the inner wall of the receiving hopper 101; the concave side of the arc-shaped material dividing plate 103 faces downward, and the two ends of the arc-shaped material dividing plate 103 in the width direction are respectively located directly above the two material receiving ports 6.

[0037] In the above embodiments, the arc-shaped dividing plate 103 of the present application is facing the coke pusher under the carbonization furnace, and the concave side of the arc-shaped dividing plate 103 is facing downward, so that the lignite discharged by the coke pusher will first fall on the top of the arc-shaped dividing plate 103, and then be divided into two parts at the top of the arc-shaped dividing plate 103 under the action of gravity or the impact of the subsequent falling lignite, and move from both sides of the width direction of the arc-shaped dividing plate 103 respectively, and then fall from both ends of the width direction of the arc-shaped dividing plate 103 to the receiving ports 6 of the two coke discharge boxes 1, thereby achieving the effect of evenly distributing the lignite under the carbonization grate.

[0038] In addition, the position of the arc-shaped material dividing plate 103 of the present application is higher than that of the scraper conveyor 4. Compared with the blue coke falling directly from the bottom of the coke pusher onto the scraper conveyor 4, the arc-shaped material dividing plate 103 of the present application can play a certain buffering role on the falling impact of the blue coke, reduce the impact force of the blue coke on the scraper conveyor 4, and thus protect the scraper conveyor 4. When the blue coke falls on the arc-shaped material dividing plate 103, a small amount of debris may splash around, and the receiving hopper 101 and the two material blocking side plates 102 can block these debris to prevent these debris from splashing out and polluting the surrounding area.

[0039] Furthermore, if Figure 1 and Figure 2 As shown, the silo 2 includes a top silo 21 and a bottom silo 22 which are arranged in sequence from top to bottom. The top silo 21 and the bottom silo 22 are installed on the ground through a fixing frame 23. A first valve 24 is provided between the top silo 21 and the bottom silo 22, and a second valve 25 is provided below the bottom silo 22.

[0040] In the above embodiment, the first valve 24 and the second valve 25 under the top bin 21 and the bottom bin 22 are all closed during normal production. The first valve 24 is opened when the top bin 21 is full, and the first valve 24 is closed after the blue coke material is put into the bottom bin 22. Then the bottom bin 22 transports the blue coke material to the material field. The first valve 24 and the second valve 25 of the bin 2 are alternately opened and closed as needed during use, which can prevent the gas in the carbonization furnace from leaking out and ensure the internal pressure of the system.

[0041] Furthermore, if Figure 2 As shown, a maintenance platform 11 is installed on the top of the fixing frame 23 , a protective railing 12 is provided around the maintenance platform 11 , and a maintenance ladder 13 is installed on one side of the maintenance platform 11 .

[0042] In the above embodiments, a maintenance window is provided on the top bin 21 of the present application, and workers can climb onto the maintenance platform 11 through the maintenance ladder 13, and can inspect the top bin 21 or the connection between the top bin 21 and the coke discharge box 1 through the maintenance opening.

[0043] The implementation principle of this embodiment is: the semi-coke produced after the coal raw material is processed in the carbonization furnace will fall on the coke supporting tray, and the coke pusher on the coke supporting tray will push the semi-coke onto the arc-shaped dividing plate 103, and the arc-shaped dividing plate 103 can evenly distribute the semi-coke to the receiving ports 6 of the two coke discharge boxes 1.

[0044] After the lignite enters the coke discharge box 1, it will fall on the scraper conveyor 4 inside the coke discharge box 1. The scraper of the scraper conveyor 4 can convey the lignite to the discharge port 7 at the top of the coke discharge box 1 during the movement. After the lignite is discharged from the discharge port 7 of the coke discharge box 1, it will fall into the top bin 21 of the silo 2. At this time, the first valve 24 under the top bin 21 is in a closed state. When the top bin 21 is full, the first valve 24 is opened to allow the lignite in the top bin 21 to fall into the bottom bin 22, and then the first valve 24 is closed. When the lignite needs to be transported to the material yard, the second valve 25 under the bottom bin 22 is opened to release the lignite for transportation.

[0045] The transmission equipment for conveying lignite in the present application adopts two scraper conveyors 4, which are basically metal structures. Compared with the existing technology, they can convey lignite with a certain temperature stably and efficiently for a long time, reducing the failure rate of the entire system.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A blue coke delivery system, characterized by: The coke discharge box (1) comprises a coke discharge box (1), wherein the coke discharge box (1) is arranged as a whole at an angle between a carbonization furnace and a silo (2), and the lower end of the coke discharge box (1) is arranged horizontally below a coke pusher at the bottom of the carbonization furnace, and the upper end of the coke discharge box (1) is arranged horizontally above a feed port of the silo (2); the body of the coke discharge box (1) is fixedly mounted on the ground by means of a plurality of legs (3); A scraper conveyor (4) is arranged in the coke discharge box (1), and the scraper on the lower side of the scraper conveyor (4) is in contact with the lower side wall of the coke discharge box (1); a material receiving port (6) is arranged on the upper side of the lower end of the coke discharge box (1) at a position corresponding to the coke pusher, and the semi-coke discharged by the coke pusher can fall into the coke discharge box (1) from the material receiving port (6) and contact the scraper conveyor (4); A discharge port (7) is provided at the lower side of the upper end of the coke discharge box (1), and the discharge port (7) is located above the feed port at the top of the silo (2). When the scraper conveyor (4) lifts the semi-coke to the discharge port (7), the semi-coke can be discharged into the silo (2) through the discharge port (7).

2. The blue coke delivery system according to claim 1, characterized in that: Two coke discharge boxes (1) are arranged side by side between the silo (2) and the carbonization furnace, and a scraper conveyor (4) is respectively arranged in the two corresponding coke discharge boxes (1).

3. The blue coke delivery system according to claim 2, characterized in that: A cover plate (8) is provided at the feed port at the top of the silo (2), and the discharge ports (7) of the two coke discharge boxes (1) are fixedly connected to the cover plate (8) via an extension tube (9) respectively, and the two extension tubes (9) are both connected to the internal space of the silo (2).

4. The blue coke delivery system according to claim 2 or 3, characterized in that: A material receiving and distributing assembly (10) is provided above the material receiving openings (6) of the two coke discharge boxes (1), and the material receiving and distributing assembly (10) can evenly distribute the semi-coke product to the two material receiving openings (6).

5. The blue coke delivery system according to claim 4, characterized in that: The material receiving and distributing assembly (10) comprises a material receiving hopper (101), the lower end of which is sleeved on the outer sides of the two material receiving ports (6), two material blocking side plates (102) are symmetrically arranged in the middle of the material receiving ports (6), and the two material blocking side plates (102) are respectively fixedly mounted on the mutually adjacent sides of the two material receiving ports (6); An arc-shaped material dividing plate (103) is provided directly above the middle position of the two material-blocking side plates (102), and the arc-shaped material dividing plate (103) is fixedly connected to the inner wall of the receiving hopper (101); the concave side of the arc-shaped material dividing plate (103) faces downward, and the two ends of the arc-shaped material dividing plate (103) in the width direction are respectively located directly above the two material receiving ports (6).

6. The blue coke delivery system according to any one of claims 1 to 3, characterized in that: The silo (2) comprises a top silo (21) and a bottom silo (22) which are arranged in sequence from top to bottom. The top silo (21) and the bottom silo (22) are installed on the ground via a fixing frame (23). A first valve (24) is provided between the top silo (21) and the bottom silo (22), and a second valve (25) is provided below the bottom silo (22).

7. The blue coke delivery system according to claim 6, characterized in that: A maintenance platform (11) is installed on the top of the fixing frame (23), a protective railing (12) is provided around the maintenance platform (11), and a maintenance ladder (13) is installed on one side of the maintenance platform (11).

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