CN211644609U

CN211644609U - High-heat-efficiency carbon calcining furnace

Info

Publication number: CN211644609U
Application number: CN201921756507.4U
Authority: CN
Inventors: 徐广平; 刘鹏程; 宋一华; 何江荣; 茆忠军; 何爱进; 刘小俊; 宋扬
Original assignee: Jiangsu Zhonglei Energy Save Science And Technology Development Co ltd
Current assignee: Jiangsu Zhonglei Energy Save Science And Technology Development Co ltd
Priority date: 2019-10-19
Filing date: 2019-10-19
Publication date: 2020-10-09
Anticipated expiration: 2029-10-19

Abstract

The utility model discloses a high-heat-efficiency carbon calcining furnace, which comprises a furnace wall, a calcining chamber enclosed by a calcining chamber refractory wall and a calcining chamber top plate; a carbon calcining tank is arranged in the calcining chamber, heating flame paths are arranged on two side edges of the carbon calcining tank, flame path folded plates and flame path wing plates are arranged on the refractory wall of the calcining chamber at intervals, the inclination angles of folded edges of the flame path folded plates are = 20-30 degrees, and the flame path wing plates are parallel to the corresponding side folded edges of the flame path folded plates; two flame path wing plates are symmetrically arranged between two adjacent flame path folded plates, the inner ends of the two flame path wing plates are arranged at intervals, and the outer ends of the flame path wing plates are fixedly connected to the corresponding side of the refractory wall of the calcining chamber; the outer end of the flame path folded plate and the corresponding side of the refractory wall of the calcining chamber are arranged at intervals; the flame path folded plate and the flame path wing plate are arranged in a staggered and spaced mode to form two heating flame paths. Four carbon calcining tanks are arranged in each calcining chamber. The carbon calciner has the characteristics of uniform heating and high thermal efficiency.

Description

High-heat-efficiency carbon calcining furnace

Technical Field

The utility model relates to a carbon calcining device, in particular to a pot-type carbon calcining furnace for carbon production.

Background

The carbon calcination is a thermal equipment which indirectly heats various carbon products after high pressure forming according to the specified calcination temperature under the condition of air isolation, thereby achieving the purposes of improving the electric conductivity and the heat conductivity of the products and enhancing the strength of the products. The pot calciner is a common calcining device for carbon production, and materials are isolated from air in a pot body and indirectly heated to 1200-1300 ℃ to be calcined to remove volatile components in the carbon materials. The existing pot-type carbon calciner can be divided into a counter-flow calciner and a forward-flow calciner according to the flame direction of a calcining flue and the movement direction of coal in the calcining process, wherein the counter-flow calciner is that the flame direction of the calcining flue is opposite to the movement direction of the coal, the coal moves from top to bottom in the calcining pot, and the flame of the flue rises from bottom to top for calcining; otherwise, the method is a forward flow type calcining furnace.

The calcining furnace commonly used at present is a counter-flow five-layer or seven-layer calcining structure, the calcining flame path in the structure is a five-layer or seven-layer zigzag rising flame path structure, a calcining furnace chamber is arranged below the calcining channel, a fire outlet of the calcining furnace chamber is directly communicated with the flame path, and a volatile substance channel is arranged in the furnace body from top to bottom in order to fully utilize combustible volatile substances generated in the calcining channel. The pot type calcining furnace can fully utilize the combustion heat of a large amount of volatile matters escaped from the carbon material in the calcining process so as to reduce the consumption of external energy. However, the calcining flame paths in the existing pot-type carbon furnace adopt flat plate type flame paths which are horizontally arranged and mutually staggered in a calcining chamber, one flame path plate of two adjacent flame path plates extends from one side calcining refractory wall to the other side calcining chamber refractory wall, and the other flame path plate extends from the other side to the side refractory wall, so that the circularly tortuous advection flame path has high calcining temperature at the lower layer and low calcining temperature at the upper layer, and the temperature in each calcining flame path is uneven, thereby causing poor product uniformity; and because the fire path is long, the flow resistance is large, the energy consumption is high, more external heat sources provided by the calcining heating furnace are needed, and the combustion waste heat of volatile matters of the calcining furnace can not be fully exerted.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned not enough that prior art exists, the utility model aims to solve the technical problem that a high-thermal-efficiency jar formula carbon calciner is provided, not only the heating is even, can make full use of moreover calcine the waste heat.

In order to solve the technical problem, the utility model discloses a high thermal efficiency carbon calciner, including the brickwork, and setting up calcining chamber refractory wall and calcining chamber roof on the brickwork, this calcining chamber refractory wall and calcining chamber roof enclose into the calcination cavity; a carbon calcining tank is arranged in the calcining chamber, heating flame paths are arranged on two side edges of the carbon calcining tank, flame path folded plates and flame path wing plates are arranged on the refractory wall of the calcining chamber at intervals, the inclination angles of folded edges of the flame path folded plates are = 20-30 degrees, and the flame path wing plates are parallel to the corresponding side folded edges of the flame path folded plates; two flame path wing plates are symmetrically arranged between two adjacent flame path folded plates, the inner ends of the two flame path wing plates are arranged at intervals, and the outer ends of the flame path wing plates are fixedly connected to the corresponding side of the refractory wall of the calcining chamber; the outer end of the flame path folded plate and the corresponding side of the refractory wall of the calcining chamber are arranged at intervals; the flame path folded plate and the flame path wing plate are arranged in a staggered and spaced mode to form two heating flame paths.

Furthermore, four carbon calcining tanks are arranged in each calcining chamber, the upper ends of the carbon calcining tanks penetrate through the top plate of the calcining chamber and are connected with a charging hopper, and the lower ends of the carbon calcining tanks penetrate through the bottom refractory wall of the calcining chamber and are sequentially connected with a discharging machine and a discharging valve.

Furthermore, the calcining refractory wall and the calcining chamber top plate are poured by high-alumina refractory materials, and the furnace wall is built by refractory bricks.

Furthermore, a volatile matter channel, a collecting flue and a flue vertical shaft are arranged on the furnace wall, the volatile matter channel is communicated with the collecting flue, and a flue gas outlet of the calcining chamber is communicated with an outer flue through the flue vertical shaft.

In the structure, because the fire path folded plate and the fire path wing plate which are parallel to each other and are arranged in an upward inclined manner are arranged on the fire-resistant wall of the calcining chamber, the fire path folded plate and the fire path wing plate form an upward inclined calcining fire path, so that the zigzag upward high-temperature calcining gas flows more smoothly, the flow resistance is small, and the calcining temperature in the fire path becomes more uniform. Also because the two flame path wing plates are symmetrically arranged in the middle of the interval of the adjacent flame path folded plates, the flame path folded plates and the flame path wing plates are staggered with each other to form two symmetrical heating flame paths, the structure changes the conventional flame path which is long in distance and horizontally arranged into two symmetrical and inclined calcining flame paths, thereby not only ensuring the smooth flow of high-temperature calcining gas and avoiding the generation of temperature dead angles, but also improving the calcining condition of calcining volatile matters, ensuring the full calcining of the volatile matters in the flame path, fully utilizing the waste heat generated by calcining the volatile matters and having the advantage of low energy consumption. Therefore, the utility model discloses a calcination temperature is more even, and it is higher to calcine heating efficiency to guaranteed carbon product quality's even, high quality effectively.

Drawings

The high thermal efficiency carbon calciner of the present invention will be further described with reference to the accompanying drawings and the specific embodiments.

FIG. 1 is a schematic sectional view of a calcining flue part of a specific embodiment of the high-heat-efficiency carbon calcining furnace of the present invention;

fig. 2 is a schematic sectional view of the can body portion of the embodiment shown in fig. 1.

In the figure, 1-furnace wall, 2-top plate of calcining chamber, 3-refractory wall of calcining chamber, 4-calcining chamber, 5-flue folded plate, 6-flue wing plate, 7-heating flue, 8-collecting flue, 9-flue vertical shaft, 10-volatile matter channel, 11-loading hopper, 12-carbon calcining tank, 13-furnace protecting steel frame, 14-furnace bottom support, 15-finished product conveyor, 16-discharge valve and 17-discharge machine.

Detailed Description

In the high-heat-efficiency carbon calcining furnace shown in fig. 1 and 2, a furnace wall 1 is provided with a calcining chamber 4 with a cubic space surrounded by a calcining chamber refractory wall 3 and a calcining chamber top plate 2, the furnace wall 1 is built by clay refractory bricks, and the calcining chamber refractory wall 3 and the calcining chamber top plate 2 are poured by high-alumina refractory materials. Four carbon calcining tanks 12 and heating flame paths 7 positioned at two sides of the carbon calcining tanks 12 are arranged in each calcining chamber 4, the upper ends of the carbon calcining tanks 12 penetrate through a top plate 2 of the calcining chamber to be connected with a charging hopper 11, the lower ends of the carbon calcining tanks 12 penetrate through a bottom refractory wall 3 of the calcining chamber to be communicated with a discharging machine 17, a discharging valve 16 is communicated below the discharging machine 17, a finished product conveyor 15 is arranged below the discharging valve 16, and the finished product conveyor 15 is used for conveying carbon calcined finished products outwards.

A furnace steel frame 13 is arranged on the periphery of the furnace wall 1, a furnace bottom bracket 14 is supported below the furnace wall 1 corresponding to the calcining cavity 4, a volatile matter channel 10 is also arranged on the furnace wall 1, and the volatile matter channel 10 comprises a vertical channel and a horizontal channel positioned at the bottom of the calcining cavity 4. The furnace wall 1 is also provided with a collecting flue 8, a horizontal volatile matter channel positioned at the bottom of the calcining chamber conveys the waste heat to a waste heat boiler through the collecting flue 8, and a flue gas outlet of the calcining chamber 4 is communicated with a flue vertical shaft 9 so as to lead the calcining flue gas to an outer flue of a chimney through the flue vertical shaft 9.

The fire wall 3 of the calcining chamber is provided with a flame path folded plate 5 and a flame path wing plate 6, the flame path folded plate 5 is a V-shaped folded plate, the flame path wing plate 6 is obliquely arranged, an included angle between a folded plate of the flame path folded plate 5 and the horizontal direction is a folded edge inclination angle alpha, and the folded edge inclination angle alpha is selectively determined between 20 degrees and 30 degrees. The flue wing plates 6 are parallel to the folded edge plates on the corresponding sides of the flue folded plates 5. Two flame path wing plates 6 are symmetrically arranged between two adjacent flame path folded plates 5, the inner ends of the two flame path wing plates 6 are arranged at intervals, and the outer ends of the flame path wing plates 6 are fixedly connected with the fireproof wall 3 of the calcining chamber. The outer ends of the two sides of the flame path folded plate 5 and the corresponding fire-resistant wall 3 of the calcining chamber are arranged at intervals. The fire channel folded plates 5 and the fire channel wing plates 6 which are arranged in a staggered and spaced mode form two heating fire channels 7 which are bent back and inclined upwards.

Claims

1. A high-heat-efficiency carbon calcining furnace comprises a furnace wall (1), a calcining chamber refractory wall (3) and a calcining chamber top plate (2) which are arranged on the furnace wall (1), wherein a calcining chamber (4) is enclosed by the calcining chamber refractory wall (3) and the calcining chamber top plate (2); be provided with carbon in calcining chamber (4) and calcine jar (12), the both sides limit of carbon calcining jar (12) is provided with heating flame path (7), its characterized in that: the fire wall (3) of the calcining chamber is provided with a flame path folded plate (5) and a flame path wing plate (6) at intervals, the folding edge inclination angle alpha of the flame path folded plate (5) is = 20-30 degrees, and the flame path wing plate (6) is parallel to the corresponding side folding edge of the flame path folded plate (5); two flame path wing plates (6) are symmetrically arranged between two adjacent flame path folded plates (5), the inner ends of the two flame path wing plates (6) are arranged at intervals, and the outer ends of the flame path wing plates (6) are fixedly connected to the corresponding side of the calcining chamber refractory wall (3); the outer end of the flame path folded plate (5) and the corresponding side of the calcining chamber refractory wall (3) are arranged at intervals; the flame path folded plate (5) and the flame path wing plate (6) are arranged in a staggered and spaced mode to form two heating flame paths (7).

2. A highly thermally efficient carbon calciner according to claim 1 wherein: four carbon calcining tanks (12) are arranged in each calcining chamber (4), the upper ends of the carbon calcining tanks (12) penetrate through a top plate (2) of the calcining chamber and are connected with a charging hopper (11), and the lower ends of the carbon calcining tanks (12) penetrate through a bottom refractory wall (3) of the calcining chamber and are sequentially connected with a discharging machine (17) and a discharging valve (16).

3. A highly thermally efficient carbon calciner according to claim 1 wherein: the calcining chamber refractory wall (3) and the calcining chamber top plate (2) are formed by pouring high-alumina refractory materials, and the furnace wall (1) is formed by building refractory bricks.

4. A highly thermally efficient carbon calciner according to claim 1 wherein: the volatile matter channel (10), the collecting flue (8) and the flue vertical shaft (9) are arranged on the furnace wall (1), the volatile matter channel (10) is communicated with the collecting flue (8), and a flue gas outlet of the calcining chamber (4) is communicated with the outer flue through the flue vertical shaft (9).