Quenching system for carbon black production

Abstract

The utility model relates to the technical field of carbon black production, in particular to a quenching system for carbon black production, which comprises a body and a quenching device communicated with a carbon black flue gas conveying pipeline, a water outlet of the quenching device is communicated with a filter device, and a discharge port of the filter device is communicated with a buffer tank; the quenching device comprises a body, and a first quenching chamber, a second quenching chamber and a third quenching chamber which are communicated with one another are arranged in the body; a first quenching structure is arranged in the first quenching chamber, a second quenching structure is arranged in the second quenching chamber, and a third quenching structure is arranged in the third quenching chamber. The quenching system with the structure is reasonable in design, the quenching medium is uniformly distributed, the uniformity of the quenching effect is improved, the quality stability of a carbon black product is ensured, and through the arrangement of the filter device and the buffer tank, the recovery of carbon black dust particles in wastewater is also realized, and the resource waste is avoided.

Description

Technical Field

[0001] This utility model relates to the field of carbon black production technology, and in particular to a quenching system for carbon black production. Background Technology

[0002] Carbon black is an amorphous form of carbon, a product obtained from the incomplete combustion or thermal decomposition of carbonaceous materials (coal, natural gas, heavy oil, or fuel oil, etc.) under insufficient air conditions. After carbon black is generated, its temperature needs to be rapidly reduced to prevent over-reaction or agglomeration. Currently, a quenching system (with cold water directly sprayed from pipes) is installed in the quenching section of the reactor to cool the carbon black. However, the distribution of the quenching medium in this method is uneven, with differences in the flow rate and temperature of the carbon black flue gas at different locations in the quenching section. If the quenching medium cannot be precisely distributed according to the flow and temperature distribution of the flue gas, it can easily lead to over-quenching in some areas and under-quenching in others, ultimately affecting the quality stability of the carbon black product. Therefore, it is necessary to develop a quenching system for carbon black production to address these issues. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a quenching system for carbon black production, which addresses the shortcomings of the existing technology. This quenching system can make the quenching medium evenly distributed, improve the uniformity of the quenching effect, and ensure the quality stability of the carbon black product.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] A quenching system for carbon black production includes a quenching device connected to a carbon black flue gas conveying pipeline, a wastewater outlet of the quenching device connected to a filtration device, and a discharge port of the filtration device connected to a buffer tank. The quenching device includes a main body, a carbon black flue gas inlet pipe on one side of the lower part of the main body, a carbon black flue gas outlet pipe on the top of the main body, and a wastewater outlet at the bottom of the main body. Inside the main body, from bottom to top, are three interconnected quenching chambers: a first quenching chamber, a second quenching chamber, and a third quenching chamber. A first turbulence-inducing component is provided between the first quenching chamber and the second quenching chamber, and a second turbulence-inducing component is provided between the second quenching chamber and the third quenching chamber. The first quenching chamber contains a first quenching structure, the second quenching chamber contains a second quenching structure, and the third quenching chamber contains a third quenching structure.

[0006] As an improved technical solution, the first spoiler component includes multiple rows of zigzag spoilers, the spoilers have a hollow structure, and there is a gap between two adjacent spoilers.

[0007] As an improved technical solution, the second turbulence component includes a conical disc with multiple through holes, and the disc is connected to a motor via a rotating shaft.

[0008] As an improved technical solution, the first quenching structure includes a shell, inside which, from bottom to top, are arranged interconnected flue gas storage chamber, flue gas cooling chamber, and flue gas emission chamber. The air inlet of the flue gas storage chamber is connected to the carbon black flue gas inlet pipe. The upper and lower parts of one side of the flue gas cooling chamber are respectively provided with a refrigerant inlet and a refrigerant outlet. The interior of the flue gas cooling chamber is provided with multiple flue gas circulation pipes, and a refrigerant circulation channel is provided between adjacent flue gas circulation pipes. The air inlet end of the flue gas circulation pipe is connected to the flue gas storage chamber, and the air outlet end of the flue gas circulation pipe is connected to the flue gas emission chamber.

[0009] As an improved technical solution, the second rapid cooling structure includes multiple layers of spray pipes, each spray pipe having multiple nozzles connected to it; wherein adjacent layers of spray pipes are arranged in a cross shape.

[0010] As an improved technical solution, the third rapid cooling structure includes a multi-layered annular spray main pipe, each spray main pipe having multiple spray branch pipes connected to the spray main pipe, and multiple spray holes evenly provided on the spray main pipe and the spray branch pipes respectively.

[0011] As an improved technical solution, the filtration device is a plate and frame filter.

[0012] After adopting the above technical solution, the beneficial effects of this utility model are:

[0013] The quenching system used in carbon black production includes a quenching device connected to a carbon black flue gas conveying pipeline. The wastewater outlet of the quenching device is connected to a filtration device, and the discharge port of the filtration device is connected to a buffer tank. The quenching device includes a main body, with a carbon black flue gas inlet pipe on one side of the lower part of the main body, a carbon black flue gas outlet pipe on the top of the main body, and a wastewater outlet at the bottom of the main body. Inside the main body, from bottom to top, there are interconnected first quenching chambers, second quenching chambers, and third quenching chambers. A first turbulence-inducing component is provided between the first and second quenching chambers, and a second turbulence-inducing component is provided between the second and third quenching chambers. The first quenching chamber has a first quenching structure inside, the second quenching chamber has a second quenching structure inside, and the third quenching chamber has a third quenching structure inside. The generated carbon black flue gas, driven by an induced draft fan, enters the main body of the quenching device along the carbon black flue gas conveying pipe. It first enters the first quenching chamber, where it is cooled by the first quenching structure and then passes through the first turbulence component for uniform dispersion. It then enters the second quenching chamber, where it is cooled by the second quenching structure and then passes through the second turbulence component for uniform dispersion. Finally, it enters the third quenching chamber, where it is cooled by the third quenching structure and then discharged from the carbon black flue gas outlet pipe into subsequent processing equipment. The wastewater generated from the quenching process is discharged from the drain outlet and then pumped into a filtration device. The carbon black dust particles collected by the filter are stored in a buffer tank and then processed by other equipment to obtain the carbon black product. This quenching system is rationally designed, ensuring uniform distribution of the quenching medium, improving the uniformity of the quenching effect, and guaranteeing the quality stability of the carbon black product. The filtration device and buffer tank also enable the recovery of carbon black dust particles from the wastewater, avoiding resource waste.

[0014] Because the first turbulence component includes multiple rows of zigzag turbulence plates with a hollow structure and gaps between adjacent turbulence plates, the carbon black flue gas, after being cooled by the first quenching structure, moves upward, passes through the gaps in the turbulence plates, and enters the second quenching chamber. Furthermore, some of the carbon black flue gas passes through the through-holes in the turbulence plates as it flows upward, achieving uniform dispersion of the carbon black flue gas, preventing the formation of airflow, and further contributing to the uniform cooling of the carbon black flue gas, thus improving the uniformity of the quenching effect.

[0015] The second turbulence-inducing component includes a conical disc with multiple through holes, connected to a motor via a rotating shaft. After being processed by the second quenching structure, the carbon black flue gas moves upwards. Upon starting the motor, it drives the rotating shaft and the conical disc to rotate, causing the carbon black flue gas to disperse evenly through the through holes before entering the third quenching chamber. This turbulence-inducing component is rationally designed, ensuring uniform dispersion of the carbon black flue gas, preventing airflow formation, and improving the uniformity of the quenching effect.

[0016] The first quenching structure includes a shell, inside which, from bottom to top, are interconnected flue gas storage chamber, flue gas cooling chamber, and flue gas emission chamber. The inlet of the flue gas storage chamber is connected to the carbon black flue gas inlet pipe. The upper and lower parts of one side of the flue gas cooling chamber have a refrigerant inlet and a refrigerant outlet, respectively. The flue gas cooling chamber contains multiple flue gas flow pipes, with refrigerant flow channels between adjacent pipes. The inlet end of each flow pipe connects to the flue gas storage chamber, and the outlet end connects to the emission chamber. The generated carbon black flue gas, under the action of the induced draft fan, enters the flue gas storage chamber through the carbon black flue gas inlet pipe, and then flows into the flue gas cooling chamber along the flow pipes. Simultaneously, refrigerant enters the flue gas cooling chamber from the refrigerant inlet, passing through the refrigerant flow pipes to rapidly cool the carbon black flue gas within. The cooled carbon black flue gas then enters the emission chamber and passes through the emission port into the next quenching chamber. The first quenching structure of the above structure is reasonably designed, which realizes the uniform dispersion of the refrigerant, improves the uniformity of the quenching effect, and ensures the quality stability of the carbon black product.

[0017] The second rapid cooling structure comprises multiple layers of spray pipes, each equipped with numerous nozzles connected to it; adjacent layers of spray pipes are arranged in a cross shape. Cold water enters each layer of spray pipes and is then evenly sprayed through the nozzles, achieving rapid cooling of the carbon black flue gas. The cross-shaped design of adjacent layers of spray pipes ensures more uniform dispersion of the refrigerant, facilitating rapid cooling of carbon black flue gas at different locations.

[0018] The third quenching structure comprises multiple layers of circular spray mains, each with multiple spray branch pipes connected to them. Both the main and branch pipes have evenly distributed spray holes. Cold water enters each spray main through a delivery pipe, then flows into the branch pipes, and is evenly dispersed through the spray holes, achieving rapid cooling of the carbon black flue gas. This third quenching structure is rationally designed, ensuring uniform dispersion of the refrigerant, improving the uniformity of the quenching effect, and guaranteeing the quality stability of the carbon black product.

[0019] The filtration device is a plate and frame filter press. This press can separate and recover carbon black particles from wastewater, thus avoiding resource waste. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a quenching system for carbon black production according to this utility model;

[0021] Among them, 1-carbon black flue gas conveying pipeline, 2-quenching device, 20-carbon black flue gas inlet pipe, 21-carbon black flue gas outlet pipe, 22-wastewater outlet, 23-first quenching chamber, 230-first quenching structure, 2300-flue gas storage chamber, 2301-flue gas cooling chamber, 23010-refrigerant inlet, 23011-refrigerant outlet, 23012-flue gas circulation pipeline, 23013-refrigerant circulation pipeline, 2302-flue gas emission. 24-Second quench chamber, 240-Second quench structure, 2400-Spray pipe, 2401-Spray head, 25-Third quench chamber, 250-Third quench structure, 2500-Main spray pipe, 2501-Spray branch pipe, 26-First turbulence component, 260-Burst plate, 261-Filter plate, 27-Second turbulence component, 270-Disc body, 271-Rotating shaft, 272-Motor, 3-Filter device, 4-Buffer tank. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] A quenching system for carbon black production, such as Figure 1 The device includes a quenching device 2 connected to a carbon black flue gas conveying pipeline 1. The wastewater outlet of the quenching device 2 is connected to a filter device 3 (plate and frame filter), and the outlet of the filter device 3 is connected to a buffer tank 4. The quenching device 2 includes a body, a carbon black flue gas inlet pipe 20 on one side of the lower part of the body, a carbon black flue gas outlet pipe 21 on the top of the body, and a wastewater outlet 22 at the bottom of the body. The interior of the body has a first quenching chamber 23, a second quenching chamber 24, and a third quenching chamber 25 that are interconnected from bottom to top. A first turbulence-inducing component 26 is provided between the first quenching chamber 23 and the second quenching chamber 24, and a second turbulence-inducing component 27 is provided between the second quenching chamber 24 and the third quenching chamber 25. The first quenching chamber 23 has a first quenching structure 230 inside, the second quenching chamber 24 has a second quenching structure 240 inside, and the third quenching chamber 25 has a third quenching structure 250 inside.

[0024] The carbon black flue gas generated after the reaction is drawn into the main body of the quenching device by the induced draft fan along the carbon black flue gas conveying pipe. It first enters the first quenching chamber, where it is cooled by the first quenching structure and then passes through the first turbulence component for uniform dispersion. It then enters the second quenching chamber, where it is cooled by the second quenching structure and then passes through the second turbulence component for uniform dispersion. Finally, it enters the third quenching chamber, where it is cooled by the third quenching structure and then discharged from the carbon black flue gas outlet pipe into subsequent processing equipment. The wastewater generated from the quenching process is discharged from the drain outlet and then enters the filtration device under the action of the conveying pump. The carbon black dust particles collected by the filter are stored in a buffer tank and then processed by other equipment to obtain the carbon black product. The above-described quenching system is rationally designed, ensuring uniform distribution of the quenching medium, improving the uniformity of the quenching effect, and guaranteeing the quality stability of the carbon black product. The filtration device and buffer tank also enable the recovery of carbon black dust particles from the wastewater, avoiding resource waste.

[0025] The first turbulence component 26 includes multiple rows of zigzag turbulence plates 260. The turbulence plates 260 are fixed inside the main body by two layers of filter plates 261. The turbulence plates have a hollow structure, and there is a gap between two adjacent turbulence plates. After being cooled by the first quenching structure, the carbon black flue gas moves upward, passes through the gaps in the turbulence plates, and enters the second quenching chamber. As the carbon black flue gas flows upward, some of it passes through the through holes in the turbulence plates, which achieves uniform dispersion of the carbon black flue gas, avoids the formation of airflow, and further helps to cool the carbon black flue gas evenly, thus improving the uniformity of the quenching effect.

[0026] The second turbulence-inducing component 27 includes a conical disc 270 with multiple through holes. The disc is connected to a motor 272 via a rotating shaft 271. After being processed by the second quenching structure, the carbon black flue gas moves upward. Upon starting the motor, it drives the rotating shaft and the conical disc to rotate, causing the carbon black flue gas to disperse evenly through the through holes before entering the interior of the third quenching chamber. The turbulence-inducing component in this structure is rationally designed, ensuring uniform dispersion of the carbon black flue gas, preventing airflow formation, and improving the uniformity of the quenching effect.

[0027] The first quenching structure 230 includes a shell (welded to the inner wall of the main body via a connecting plate). Inside the shell, from bottom to top, are sequentially arranged a flue gas storage chamber 2300, a flue gas cooling chamber 2301, and a flue gas emission chamber 2302. The flue gas emission chamber has a flushing water inlet and a flushing water outlet on its upper and lower sides, respectively. (When the cold water from the second and third quenching chambers cools the carbon black flue gas, some cold water and carbon black dust particles enter the flue gas emission chamber. After the flushing water enters through the flushing water inlet, the flushing cold water and carbon black dust particles are discharged from the flushing water outlet and enter the plate and frame filter along the pipe.) The air inlet of the flue gas storage chamber 2300 is connected to the carbon black flue gas inlet pipe. A drain outlet is provided on one side of the lower part of the flue gas storage chamber (when the cold water in the second and third quench chambers cools the carbon black flue gas, some cold water and carbon black dust particles will enter the interior of the flue gas storage chamber, be discharged through the drain outlet on one side, and then enter the plate and frame filter along the pipe); a refrigerant inlet 23010 and a refrigerant outlet 23011 are respectively provided on the upper and lower parts of one side of the flue gas cooling chamber 2301. Multiple flue gas circulation pipes 23012 are provided inside the flue gas cooling chamber 2301, and a refrigerant circulation channel 23013 is provided between adjacent flue gas circulation pipes. The air inlet end of the flue gas circulation pipe 23012 is connected to the flue gas storage chamber 2300, and the exhaust end of the flue gas circulation pipe 23012 is connected to the flue gas emission chamber 2302. The generated carbon black flue gas, driven by an induced draft fan, enters the flue gas storage chamber through the carbon black flue gas inlet pipe, and then flows along the flue gas circulation pipe into the flue gas cooling chamber. Simultaneously, refrigerant enters the flue gas cooling chamber through the refrigerant inlet, passing through the refrigerant circulation pipe to rapidly cool the carbon black flue gas within it. The cooled carbon black flue gas then enters the flue gas emission chamber, passing through the emission port into the next rapid cooling treatment chamber. The first rapid cooling structure described above is rationally designed, achieving uniform refrigerant dispersion, improving the uniformity of the rapid cooling effect, and ensuring the quality stability of the carbon black product.

[0028] The second rapid cooling structure 240 includes multiple layers of spray pipes 2400, each equipped with multiple nozzles 2401 connected to it; adjacent layers of spray pipes are arranged in a cross shape. Cold water enters each layer of spray pipes and is then evenly sprayed through the nozzles, achieving rapid cooling of the carbon black flue gas. The cross-shaped design of adjacent layers of spray pipes ensures more uniform dispersion of the refrigerant, facilitating rapid cooling of carbon black flue gas at different locations.

[0029] The third rapid cooling structure 250 includes multiple layers of annular spray main pipes 2500 (welded to the inner wall of the main body via connecting rods). Each layer of spray main pipe 2500 has multiple spray branch pipes 2501 connected to it. Multiple spray holes are evenly distributed on both the spray main pipes 2500 and the spray branch pipes 2501. Cold water enters each layer's spray main pipe through a delivery pipe, and then enters the multiple spray branch pipes. The cold water is evenly dispersed through the spray holes, achieving rapid cooling of the carbon black flue gas. This third rapid cooling structure is rationally designed, ensuring uniform dispersion of the refrigerant, improving the uniformity of the rapid cooling effect, and guaranteeing the quality stability of the carbon black product.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quenching system for carbon black production, characterized in that, The device includes a quenching unit connected to a carbon black flue gas conveying pipeline, a wastewater outlet connected to a filtration unit, and a discharge port connected to a buffer tank. The quenching unit comprises a main body, with a carbon black flue gas inlet pipe on one side of the lower part of the main body, a carbon black flue gas outlet pipe on the top of the main body, and a wastewater outlet at the bottom of the main body. Inside the main body, from bottom to top, are interconnected a first quenching chamber, a second quenching chamber, and a third quenching chamber. A first turbulence-inducing component is provided between the first and second quenching chambers, and a second turbulence-inducing component is provided between the second and third quenching chambers. The first quenching chamber contains a first quenching structure, the second quenching chamber contains a second quenching structure, and the third quenching chamber contains a third quenching structure.

2. The quenching system for carbon black production according to claim 1, characterized in that, The first spoiler component includes multiple rows of zigzag spoilers, the spoilers have a hollow structure, and there is a gap between two adjacent spoilers.

3. The quenching system for carbon black production according to claim 1, characterized in that, The second turbulence component includes a conical disc with multiple through holes, and the disc is connected to a motor via a rotating shaft.

4. The quenching system for carbon black production according to claim 1, characterized in that, The first quenching structure includes a shell, inside which, from bottom to top, are arranged a flue gas storage chamber, a flue gas cooling chamber, and a flue gas emission chamber that are interconnected. The air inlet of the flue gas storage chamber is connected to the carbon black flue gas inlet pipe. The upper and lower parts of one side of the flue gas cooling chamber are respectively provided with a refrigerant inlet and a refrigerant outlet. The interior of the flue gas cooling chamber is provided with multiple flue gas circulation pipes, and a refrigerant circulation channel is provided between adjacent flue gas circulation pipes. The air inlet end of the flue gas circulation pipe is connected to the flue gas storage chamber, and the air outlet end of the flue gas circulation pipe is connected to the flue gas emission chamber.

5. A quenching system for carbon black production according to claim 1, characterized in that, The second rapid cooling structure includes multiple layers of spray pipes, each spray pipe having multiple nozzles connected to it; wherein adjacent layers of spray pipes are arranged in a cross shape.

6. The quenching system for carbon black production according to claim 1, characterized in that, The third rapid cooling structure includes multiple layers of annular spray main pipes, each layer of spray main pipes is provided with multiple spray branch pipes connected to the spray main pipes, and multiple spray holes are uniformly provided on the spray main pipes and the spray branch pipes respectively.

7. A quenching system for carbon black production according to claim 1, characterized in that, The filtration device is a plate and frame filter.

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