Fluorine chemical cracking furnace

Abstract

The utility model discloses a fluorine chemical cracking furnace which comprises a main body module, the main body module comprises two combustion chambers which are symmetrically arranged, a flue gas pipe which is arranged above the combustion chambers and is communicated with the combustion chambers, a plurality of flow guide plates which are fixed on the inner wall of the flue gas pipe in an array manner, a hopper arranged at the top end of the flue gas pipe, a plurality of pipe bodies which penetrate through the flue gas pipe, and feeding pipes which are connected with the hopper and the pipe bodies; the feeding pipes are installed on the two sides of the pipe body and extend into the combustion chamber, the feeding piece is installed in the pipe body, the preheating piece is arranged at the top end of the smoke pipe, the combustion chamber is used for combusting raw materials so that the raw materials can be cracked, and refractory bricks are installed on the inner wall of the combustion chamber so that a combustion chamber shell can be prevented from being damaged by high temperature; the multiple burners are installed between the adjacent fire-resistant devices in an array mode and used for burning raw materials, and the fluorine chemical cracking furnace has the advantages of being good in raw material preheating effect and capable of achieving automatic feeding.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical cracking furnaces, and specifically relates to a fluorochemical cracking furnace. Background Technique

[0002] Polyvinylidene fluoride (PVDF) is a fluororesin with an annual output second only to polytetrafluoroethylene (PTFE). It has the common properties of fluororesins, such as excellent thermal stability, corrosion resistance, non-flammability, hydrophobicity, etc. At the same time, it is the most rigid material among fluororesins, with the highest tensile strength and compressive strength, the best rigidity, wear resistance and cut resistance, and excellent piezoelectric properties. It is widely used in industries such as chemical engineering, electronics, medicine, construction, environmental protection, batteries, semiconductors, aerospace, etc. The main products include coatings, solar cell backsheet films, lithium battery binders, water treatment membranes, dielectric insulation membranes, chemical corrosion-resistant containers, chemical corrosion-resistant pipe valves, wires and cables, etc. Polyvinylidene fluoride is synthesized from vinylidene fluoride, and vinylidene fluoride is made through the reaction of high-temperature cracking of chloroethane difluoride to remove hydrogen chloride. A cracking furnace is a furnace body used for high-temperature cracking.

[0003] The existing fluorochemical cracking furnaces mainly have the following drawbacks during use: the preheating treatment of raw materials is poor, resulting in a long time for heating and temperature rising after the raw materials enter the cracking furnace, which affects the cracking efficiency. Therefore, there is room for improvement. Content of the Utility Model

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] For this reason, the technical solution adopted by the utility model is as follows: a fluorochemical cracking furnace, including: a main body module, the main body module includes two symmetrically arranged combustion chambers, a smoke pipe arranged above the combustion chamber and communicated with the combustion chamber, a plurality of guide plates fixedly arranged in an array on the inner wall of the smoke pipe, a hopper arranged at the top of the smoke pipe, a plurality of pipe bodies arranged through the smoke pipe, a feed pipe connecting the hopper and the pipe body, a feeding pipe installed on both sides of the pipe body and extending into the combustion chamber, a feeding member installed in the pipe body, and a preheating member arranged at the top of the smoke pipe.

[0006] The preheating member includes heat pipes fixedly arranged in an array at the top of the smoke pipe and communicated with the smoke pipe, a shell fixed at the top of the heat pipe and communicated with the heat pipe, and a plurality of exhaust pipes installed at the top of the shell.

[0007] The utility model can be further configured in a preferred example as follows: adjacent guide plates are arranged in central symmetry to form an S-shaped flow channel in the smoke pipe, and the feed pipe passes through the guide plate and is communicated with the pipe body.

[0008] In a preferred embodiment, the present utility model can be further configured as follows: the feeding member includes a motor installed on one side of the pipe body, a rotating shaft rotatably installed in the inner cavity of the pipe body and fixedly connected to the motor shaft at the end, and a propeller blade fixed on the rotating shaft.

[0009] In a preferred embodiment, the present utility model can be further configured as follows: there are two propeller blades on the rotating shaft, and they are symmetrically arranged with the center of the rotating shaft as the center of symmetry.

[0010] In a preferred embodiment, the present utility model can be further configured as follows: refractory bricks are installed on the inner wall of the combustion chamber, and a plurality of burners are installed in an array between adjacent refractory bricks.

[0011] By adopting the above technical solutions, the beneficial effects achieved by the present utility model are as follows:

[0012] 1. In the present utility model, the hopper is arranged above the flue gas pipe, and a feed pipe is arranged to communicate with the hopper. At the same time, a plurality of flow guiding plates are arranged in an array on the inner wall of the flue gas pipe, and adjacent flow guiding plates are centrosymmetrically arranged, forming an S-shaped flow channel in the flue gas pipe. When the high-temperature waste gas generated during cracking enters the S-shaped flow channel, it can heat the raw materials in the feed pipe. At the same time, a plurality of heat pipes are arranged in an array at the top of the flue gas pipe. When the high-temperature flue gas enters the heat pipes through the flue gas pipe, it can heat the raw materials in the hopper through the heat pipes, raising the temperature of the raw materials, so that the raw materials can quickly reach the cracking temperature after entering the cracking furnace, further improving the cracking efficiency.

[0013] 2. In the present utility model, the bottom end of the feed pipe is provided with a pipe body extending out of the flue gas pipe, and feed pipes communicating with the combustion chamber are installed on both sides of the pipe body. At the same time, a feeding member is installed in the pipe body. When the preheated raw materials enter the pipe body through the feed pipe, the feeding member starts, which can drive the raw materials to move in the pipe body to the position of the feed pipe, and send them into the inner cavity of the combustion chamber through the feed pipe, realizing the automatic feeding of the raw materials, and further increasing the practical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic cross-sectional view of the present utility model;

[0016] Figure 3 is a schematic cross-sectional structural diagram of the present utility model;

[0017] Figure 4 is a schematic partial structural diagram of the present utility model.

[0018] Reference numerals:

[0019] 100. Main body module; 110. Combustion chamber; 111. Refractory brick; 112. Burner; 120. Smoke exhaust pipe; 130. Deflector; 140. Hopper; 150. Pipe body; 160. Feed pipe; 170. Feeding pipe; 180. Feeding member; 181. Motor; 182. Rotating shaft; 183. Helical blade; 190. Preheating member; 191. Heat pipe; 192. Shell; 193. Exhaust pipe. Detailed implementation mode

[0020] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the specific implementation modes and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0021] Some embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0022] Embodiment 1:

[0023] Combined with Figures 1-4 As shown, this embodiment provides a fluorochemical cracking furnace, including: main body module 100.

[0024] Among them, the main body module 100 includes two symmetrically arranged combustion chambers 110, a smoke exhaust pipe 120 arranged above the combustion chamber 110 and communicating with the combustion chamber 110, a plurality of deflectors 130 fixedly arranged on the inner wall of the smoke exhaust pipe 120 in an array, a hopper 140 arranged at the top end of the smoke exhaust pipe 120, a plurality of pipe bodies 150 passing through the smoke exhaust pipe 120, a feed pipe 160 connecting the hopper 140 and the pipe body 150, feeding pipes 170 installed on both sides of the pipe body 150 and extending into the combustion chamber 110, a feeding member 180 installed in the pipe body 150, and a preheating member 190 arranged at the top end of the smoke exhaust pipe 120.

[0025] The combustion chamber 110 is used to burn the raw materials to make them crack. Refractory bricks 111 are installed on the inner wall of the combustion chamber 110 to prevent high temperature from damaging the shell 192 of the combustion chamber 110. A plurality of burners 112 are installed in an array between adjacent refractory bricks for burning the raw materials.

[0026] The smoke exhaust pipe 120 communicates with the combustion chamber 110 and is used to discharge the high-temperature waste gas generated during cracking. The deflector 130 is fixed on the inner wall of the smoke exhaust pipe 120, and adjacent deflectors 130 are arranged centrosymmetrically to form an S-shaped flow channel in the smoke exhaust pipe 120, extending the time for the high-temperature waste gas to pass through the smoke exhaust pipe 120.

[0027] The hopper 140 is used to place the raw materials to be pyrolyzed. One end of the feed pipe 160 is connected to the hopper 140, and the other end passes through the deflector 130 and is connected to the pipe body 150. When the raw materials are located in the feed pipe 160, the high-temperature waste gas passes through the S-shaped flow channel, and the raw materials in the feed pipe 160 are heated to increase the temperature of the raw materials.

[0028] Both ends of the pipe body 150 extend out of the flue gas pipe 120, and the middle part of the inner cavity of the pipe body 150 is connected to the feed pipe 160. The feeding pipes 170 are arranged on both sides of the pipe body 150 and are used to send the raw materials in the pipe body 150 into the combustion chamber 110.

[0029] The feeding member 180 is used to move the raw materials from the middle part of the pipe body 150 to both sides so that they enter the feeding pipes 170. The feeding member 180 includes a motor 181 installed on one side of the pipe body 150, a rotating shaft 182 rotatably installed in the inner cavity of the pipe body 150 and with its end fixedly connected to the shaft of the motor 181, and a propeller blade 183 fixed on the rotating shaft 182. There are two propeller blades 183 on the rotating shaft 182, and they are symmetrically arranged with the center of the rotating shaft 182 as the symmetry center. When the motor 181 rotates, it drives the rotating shaft 182 to rotate. The rotation of the rotating shaft 182 drives the propeller blade 183 to rotate, moving the raw materials from the middle part of the pipe body 150 to both sides, so that the raw materials move to the position of the feeding pipes 170 and are put into the combustion chamber 110 through the feeding pipes 170.

[0030] The preheating member 190 is used to heat the raw materials in the hopper 140, and includes heat pipes 191 fixedly arranged in an array at the top of the flue gas pipe 120 and connected to the flue gas pipe 120, a housing 192 fixed at the top of the heat pipes 191 and connected to the heat pipes 191, and a plurality of exhaust pipes 193 installed at the top of the housing 192. The heat pipes 191 are made of heat-conducting materials. When the high-temperature waste gas passes through the heat pipes 191, the heat in the high-temperature waste gas can be transferred to the raw materials in the hopper 140 through the heat pipes 191 to heat the raw materials and increase the temperature of the raw materials. The heat enters the housing 192 and is discharged through the exhaust pipes 193, which is convenient for subsequent processing.

[0031] Working principle and usage process of the present utility model: When the cracking furnace is working, the high-temperature waste gas generated enters the smoke pipe 120, and flows in the S-shaped flow path formed by the guide plate 130 in the smoke pipe 120 to preheat the raw materials in the feed pipe 160. Then, the high-temperature waste gas enters the heat pipe 191 through the smoke pipe 120. After passing through the heat pipe 191, the high-temperature waste gas can heat the raw materials in the hopper 140. Then, the waste gas enters the housing 192 and is discharged through the exhaust pipe 193. When feeding is required, the motor 181 is started to drive the rotation of the rotating shaft 182. The rotation of the rotating shaft 182 drives the rotation of the propeller blade 183. The rotation of the propeller blade 183 moves the raw materials fed into the pipe body 150 from the feed pipe 160 to both sides. When the raw materials move to the position of the feed pipe 170, they are put into the combustion chamber 110 through the feed pipe 170 for cracking.

[0032] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A fluorochemical cracking furnace, comprising: The main body module (100), characterized in that the main body module (100) includes two symmetrically arranged combustion chambers (110), a smoke pipe (120) arranged above the combustion chamber (110) and communicated with the combustion chamber (110), a plurality of flow guiding plates (130) fixedly arranged in an array on the inner wall of the smoke pipe (120), a hopper (140) arranged at the top end of the smoke pipe (120), a plurality of pipe bodies (150) arranged through the smoke pipe (120), a feed pipe (160) connecting the hopper (140) and the pipe body (150), a feeding pipe (170) installed on both sides of the pipe body (150) and extending into the combustion chamber (110), a feeding member (180) installed in the pipe body (150), and a preheating member (190) arranged at the top end of the smoke pipe (120); The preheating member (190) includes heat pipes (191) fixedly arranged in an array at the top end of the smoke pipe (120) and communicated with the smoke pipe (120), a housing (192) fixed at the top end of the heat pipe (191) and communicated with the heat pipe (191), and a plurality of exhaust pipes (193) installed at the top end of the housing (192).

2. The fluorochemical cracking furnace according to claim 1, characterized in that, Adjacent flow guiding plates (130) are arranged in central symmetry to form an S-shaped flow channel in the smoke pipe (120), and the feed pipe (160) passes through the flow guiding plate (130) and is communicated with the pipe body (150).

3. The fluorochemical cracking furnace according to claim 1, wherein, The feeding member (180) includes a motor (181) installed on one side of the pipe body (150), a rotating shaft (182) rotatably installed in the inner cavity of the pipe body (150) and the end of which is fixedly connected with the shaft of the motor (181), and a propeller blade (183) fixed on the rotating shaft (182).

4. A fluorochemical cracking furnace according to claim 3, characterized in that, There are two propeller blades (183) on the rotating shaft (182), and they are symmetrically arranged with the center of the rotating shaft (182) as the symmetry center.

5. A fluorochemical cracking furnace according to claim 1, characterized in that, Refractory bricks (111) are installed on the inner wall of the combustion chamber (110), and a plurality of burners (112) are installed in an array between adjacent refractory bricks.

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