Single-arch single-grate semi-coke furnace

Abstract

The utility model discloses a single-arch single-fire-grate semi-coke furnace which comprises a furnace body and a fire grate. Wherein a hearth is arranged in the furnace body, fuel is placed on the fire grate, the fire grate is installed below the hearth so that the fuel on the fire grate can be combusted in the hearth, and the furnace body is provided with a fuel gas connector which is communicated with the hearth and used for connecting fuel gas into the hearth. According to the semi-coke combustion furnace, the problem that semi-coke is not prone to combustion can be solved, the semi-coke can be stably combusted, heat is supplied by combusting the semi-coke, and the selection range of fuel is widened.

Description

Technical Field

[0001] The utility model relates to a single-arch single-grate semi-coke furnace. Background Art

[0002] At present, an organic heat carrier furnace is a special industrial furnace that uses the heat energy generated by fuel combustion to heat the heat-conducting oil, and then transfers the heat to the heat-using equipment through the heat-conducting oil. A Chinese patent with the publication number CN212157213U discloses an anti-blocking-ash organic heat carrier furnace. Among various commonly used fuels, semi-coke is not easy to burn due to its extremely low volatile content, resulting in that most of the existing organic heat carrier furnaces cannot stably supply heat by burning semi-coke, which limits the fuel selection range of the organic heat carrier furnace. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a single-arch single-grate semi-coke furnace, which can solve the problem that semi-coke is not easy to burn, enable semi-coke to stably burn and supply heat by burning semi-coke, and expand the fuel selection range.

[0004] To solve the above technical problem, the technical solution of the utility model is: a single-arch single-grate semi-coke furnace, including a furnace body and a grate;

[0005] A furnace chamber is provided in the furnace body;

[0006] Fuel is placed on the grate, and the grate is installed below the furnace chamber so that the fuel on the grate burns in the furnace chamber;

[0007] A gas interface communicating with the furnace chamber and used for introducing gas into the furnace chamber is provided on the furnace body.

[0008] Further, a plurality of the gas interfaces are respectively provided on the left side wall and the right side wall of the furnace body.

[0009] Further, a radiation chamber, a first convection chamber and a second convection chamber are further provided in the furnace body. Radiation section furnace tubes are provided in the radiation chamber, first coil pipes are provided in the first convection chamber, and second coil pipes are provided in the second convection chamber.

[0010] Further, the single-arch single-grate semi-coke furnace further includes an ash hopper;

[0011] The first convection chamber is provided on one side of the radiation chamber, and the second convection chamber is provided on one side of the first convection chamber;

[0012] The radiation chamber is provided above the furnace chamber, and the lower end of the radiation chamber communicates with the upper end of the furnace chamber;

[0013] The upper end of the radiation chamber communicates with the upper end of the first convection chamber;

[0014] The ash hopper is arranged below the first convection chamber and the second convection chamber, and the lower ends of the first convection chamber and the second convection chamber are respectively communicated with the ash hopper;

[0015] A flue gas outlet communicated with the upper end of the second convection chamber is further arranged on the furnace body.

[0016] Furthermore, the single-arch single-grate semi-coke furnace further includes a top coil pipe, and the top coil pipe is arranged at the top of the radiation chamber and the top of the first convection chamber.

[0017] Furthermore, the single-arch single-grate semi-coke furnace further includes an inlet header, an outlet header, a convection section inlet pipe, a first outlet pipe and a second outlet pipe;

[0018] The inlet header is used for accessing heat transfer oil, and the inlet header is connected with the convection section inlet pipe;

[0019] The convection section inlet pipe is respectively connected with the inlets of the first coil pipe and the second coil pipe;

[0020] The outlet of the first coil pipe is connected with the first outlet pipe, and the outlet of the second coil pipe is connected with the second outlet pipe;

[0021] The first outlet pipe and the second outlet pipe are respectively connected with the radiation section furnace tubes;

[0022] The radiation section furnace tubes are connected with the top coil pipe, and the top coil pipe is connected with the outlet header.

[0023] Furthermore, a partition is arranged between the first convection chamber and the second convection chamber.

[0024] Furthermore, a front arch and a rear arch are arranged in the furnace hearth, and a communication port for communicating the furnace hearth and the radiation chamber is arranged between the front arch and the rear arch.

[0025] Furthermore, both the front arch and the rear arch are of single-arch structures, and there is one grate.

[0026] Furthermore, the single-arch single-grate semi-coke furnace further includes a slag removal pit located below the grate, and the grate is used for conveying the residues generated after the fuel is burned into the slag removal pit.

[0027] After adopting the above technical solution, when using semi-coke as fuel, the semi-coke is added and placed on the grate. The grate can transport the semi-coke to move into the furnace for combustion. Since the volatile content of semi-coke is extremely low, it is not easy to burn. At this time, gas is introduced into the furnace through the gas interface. After the gas burns in the furnace, it can increase the combustion temperature in the furnace, and then can assist and promote the stable combustion of the semi-coke on the grate in the furnace, solving the problem that semi-coke is not easy to burn, and can supply heat by burning semi-coke, expanding the range of fuel selection and making it more flexible and convenient to use. Description of the Drawings

[0028] Figure 1 It is the main sectional view of the single-arch single-grate semi-coke furnace of the present utility model;

[0029] Figure 2 It is the left sectional view of the single-arch single-grate semi-coke furnace of the present utility model. Detailed Description of the Invention

[0030] In order to make the content of the present utility model easier to be clearly understood, the present utility model will be further described in detail below according to specific embodiments and in conjunction with the drawings.

[0031] As Figure 1 、 2 shown, a single-arch single-grate semi-coke furnace includes a furnace body 1 and a grate 2;

[0032] A furnace 3 is provided in the furnace body 1;

[0033] The grate 2 is used for placing fuel, and the grate 2 is installed below the furnace 3 so that the fuel on the grate 2 burns in the furnace 3;

[0034] A gas interface 4 communicating with the furnace 3 and used for introducing gas into the furnace 3 is provided on the furnace body 1. Specifically, when using semi-coke as fuel, the semi-coke is added and placed on the grate 2. The grate 2 can transport the semi-coke to move into the furnace 3 for combustion. Since the volatile content of semi-coke is extremely low, it is not easy to burn. At this time, gas is introduced into the furnace 3 through the gas interface 4. After the gas burns in the furnace 3, it can increase the combustion temperature in the furnace 3, and then can assist and promote the stable combustion of the semi-coke on the grate 2 in the furnace 3, solving the problem that semi-coke is not easy to burn, and can supply heat by burning semi-coke, expanding the range of fuel selection and making it more flexible and convenient to use. Among them, the amount of gas introduced into the furnace 3 is relatively small.

[0035] Specifically, in some regions, semi-coke is the most easily obtainable and stably supplied fuel. Using semi-coke as fuel in these regions can reduce the procurement and transportation costs of fuel. Of course, the single-arch single-grate semi-coke furnace of the embodiment of the present application can also use bituminous coal, biomass formed particles, etc. as fuel according to actual situations.

[0036] As Figure 1 , 2 shown, a plurality of the gas interfaces 4 are respectively provided on the left side wall and the right side wall of the furnace body 1.

[0037] As Figure 1 shown, a radiation chamber 5, a first convection chamber 6 and a second convection chamber 7 are further provided in the furnace body 1. Radiation section furnace tubes 8 are provided in the radiation chamber 5, first serpentine tubes 9 are provided in the first convection chamber 6, and second serpentine tubes 10 are provided in the second convection chamber 7.

[0038] As Figure 1 shown, the first convection chamber 6 is provided on one side of the radiation chamber 5, and the second convection chamber 7 is provided on one side of the first convection chamber 6;

[0039] The radiation chamber 5 is provided above the furnace hearth 3, and the lower end of the radiation chamber 5 is communicated with the upper end of the furnace hearth 3;

[0040] The upper end of the radiation chamber 5 is communicated with the upper end of the first convection chamber 6;

[0041] The ash hopper 11 is provided below the first convection chamber 6 and the second convection chamber 7, and the lower ends of the first convection chamber 6 and the second convection chamber 7 are respectively communicated with the ash hopper 11;

[0042] A flue gas outlet 12 communicated with the upper end of the second convection chamber 7 is further provided on the furnace body 1; Specifically, fuels such as semi-coke are placed on the grate 2 and burned in the furnace hearth 3 to generate high-temperature flue gas. The high-temperature flue gas will flow through the radiation chamber 5 and the first convection chamber 6 in sequence from the furnace hearth 3 and then flow into the ash hopper 11, and then flow into the second convection chamber 7 from the ash hopper 11, and finally the flue gas is discharged from the flue gas outlet 12 and enters the system waste heat recovery device. Among them, when the flue gas flows through the ash hopper 11, the soot in the flue gas will settle in the ash hopper 11, which facilitates the user to clean the ash.

[0043] As Figure 1 , 2 shown, the single-arch single-grate semi-coke furnace may further include a top coil 13, and the top coil 13 is provided on the top of the radiation chamber 5 and the top of the first convection chamber 6.

[0044] As Figure 1 , 2As shown, the single-arch single-grate semi-coke furnace may further include an inlet header 14, an outlet header 15, a convection-section inlet pipe 16, a first outlet pipe 17, and a second outlet pipe 18;

[0045] The inlet header 14 is used to access heat-conducting oil, and the inlet header 14 is connected to the convection-section inlet pipe 16;

[0046] The convection-section inlet pipe 16 is respectively connected to the inlet of the first coil 9 and the inlet of the second coil 10;

[0047] The outlet of the first coil 9 is connected to the first outlet pipe 17, and the outlet of the second coil 10 is connected to the second outlet pipe 18;

[0048] The first outlet pipe 17 and the second outlet pipe 18 are respectively connected to the radiant-section furnace tubes 8;

[0049] The radiant-section furnace tubes 8 are connected to the top coil 13;

[0050] The top coil 13 is connected to the outlet header 15.

[0051] Specifically, the heat-conducting oil accessed by the inlet header 14 flows into the convection-section inlet pipe 16, and then the heat-conducting oil respectively flows into the first coil 9 and the second coil 10 from the convection-section inlet pipe 16. The heat-conducting oil in the first coil 9 sequentially flows through the first outlet pipe 17, the radiant-section furnace tubes 8, and the top coil 13 and then flows into the outlet header 15. The heat-conducting oil in the second coil 10 sequentially flows through the second outlet pipe 18, the radiant-section furnace tubes 8, and the top coil 13 and then flows into the outlet header 15. The heat-conducting oil in the outlet header 15 then flows into the heat-supply circulation system pipeline for external heat supply.

[0052] More specifically, in the radiant chamber 5, high-temperature flue gas exchanges radiant heat with the radiant-section furnace tubes 8 and the top coil 13. In the first convection chamber 6, the flue gas exchanges convective and radiant heat with the first coil 9. In the second convection chamber 7, the flue gas exchanges convective and radiant heat with the second coil 10 to heat the heat-conducting oil flowing in the pipeline.

[0053] As Figure 1 shown, a partition 19 is provided between the first convection chamber 6 and the second convection chamber 7.

[0054] As Figure 1 、 2 shown, a front arch 20 and a rear arch 21 are provided in the furnace chamber 3, and a communication port 22 for communicating the furnace chamber 3 and the radiant chamber 5 is provided between the front arch 20 and the rear arch 21.

[0055] In this embodiment, both the front arch and the rear arch 21 are single-arch structures, and there is one grate 2; specifically, the structure of the single-arch and single-grate is beneficial to the overall transportation, and thus can be transported to the site as a whole, without the need to be transported to the site in sections and then assembled, which is more convenient to use.

[0056] As Figure 1 shown, the single-arch and single-grate semi-coke furnace may further include a slag removal pit 23 located below the grate 2, and the grate 2 is used to convey the residues generated after the fuel combustion into the slag removal pit 23.

[0057] In this embodiment, the furnace body 1 is a double-spliced furnace body 1, and a heat preservation layer is provided in the furnace body 1.

[0058] In summary, when using semi-coke as fuel, the semi-coke is added and placed on the grate 2, and the grate 2 can convey the semi-coke to move into the furnace chamber 3 for combustion. Since the volatile content of semi-coke is extremely low, it is not easy to burn. At this time, gas is introduced into the furnace chamber 3 through the gas interface 4. After the gas burns in the furnace chamber 3, the combustion temperature in the furnace chamber 3 can be increased, and thus the semi-coke on the grate 2 can be assisted and promoted to stably burn in the furnace chamber 3, solving the problem that semi-coke is not easy to burn, and heat can be supplied by burning semi-coke, expanding the range of fuel selection and making it more flexible and convenient to use.

[0059] The specific embodiments described above further elaborate on the technical problems solved, technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A single-arch single-grate semi-coke furnace, characterized in that, It includes a furnace body (1) and a grate (2); A furnace chamber (3) is provided in the furnace body (1); Fuel is placed on the grate (2), and the grate (2) is installed below the furnace chamber (3) so that the fuel on the grate (2) burns in the furnace chamber (3); A gas interface (4) that communicates with the furnace chamber (3) and is used to introduce gas into the furnace chamber (3) is provided on the furnace body (1).

2. The single-arch single-grate semi-coke furnace according to claim 1, characterized in that, A plurality of the gas interfaces (4) are respectively provided on the left side wall and the right side wall of the furnace body (1).

3. The single-arch single-grate semi-coke furnace according to claim 1, characterized in that, A radiation chamber (5), a first convection chamber (6), and a second convection chamber (7) are further provided in the furnace body (1). Radiation section furnace tubes (8) are provided in the radiation chamber (5), a first coil pipe (9) is provided in the first convection chamber (6), and a second coil pipe (10) is provided in the second convection chamber (7).

4. The single-arch single-grate semi-coke furnace according to claim 3, characterized in that, It further includes an ash hopper (11); The first convection chamber (6) is provided on one side of the radiation chamber (5), and the second convection chamber (7) is provided on one side of the first convection chamber (6); The radiation chamber (5) is provided above the furnace chamber (3), and the lower end of the radiation chamber (5) communicates with the upper end of the furnace chamber (3); The upper end of the radiation chamber (5) communicates with the upper end of the first convection chamber (6); The ash hopper (11) is provided below the first convection chamber (6) and the second convection chamber (7), and the lower ends of the first convection chamber (6) and the second convection chamber (7) are respectively connected to the ash hopper (11); A flue gas outlet (12) that communicates with the upper end of the second convection chamber (7) is further provided on the furnace body (1).

5. The single-arch single-grate semi-coke furnace according to claim 4, characterized in that, It further includes a top coil pipe (13), and the top coil pipe (13) is provided at the top of the radiation chamber (5) and the top of the first convection chamber (6).

6. The single-arch single-grate semi-coke furnace according to claim 5, wherein, It further includes an inlet header (14), an outlet header (15), a convection section inlet pipe (16), a first outlet pipe (17), and a second outlet pipe (18); The inlet header (14) is used to introduce heat transfer oil, and the inlet header (14) is connected to the convection section inlet pipe (16); The convection section inlet pipe (16) is respectively connected to the inlet of the first coil pipe (9) and the inlet of the second coil pipe (10); The outlet of the first coil pipe (9) is connected to the first outlet pipe (17), and the outlet of the second coil pipe (10) is connected to the second outlet pipe (18); The first outlet pipe (17) and the second outlet pipe (18) are respectively connected to the radiation section furnace tubes (8); The radiation section furnace tubes (8) are connected to the top coil pipe (13), and the top coil pipe (13) is connected to the outlet header (15).

7. The single-arch single-grate semi-coke furnace according to claim 4, wherein A partition plate (19) is provided between the first convection chamber (6) and the second convection chamber (7).

8. The single-arch single-grate semi-coke furnace according to claim 4, characterized in that, A front arch (20) and a rear arch (21) are provided in the furnace chamber (3), and a communication port (22) for communicating the furnace chamber (3) and the radiation chamber (5) is provided between the front arch (20) and the rear arch (21).

9. The single-arch single-grate semi-coke furnace according to claim 8, wherein, Both the front arch and the rear arch (21) are single-arch structures, and there is one grate (2).

10. The single-arch single-grate semi-coke furnace according to claim 1, characterized in that, It further includes a slag removal pit (23) located below the grate (2), and the grate (2) is used to convey the residues generated after fuel combustion into the slag removal pit (23).

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