CN115626631A - Carbon product heat treatment process - Google Patents
Carbon product heat treatment process Download PDFInfo
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- CN115626631A CN115626631A CN202211389484.4A CN202211389484A CN115626631A CN 115626631 A CN115626631 A CN 115626631A CN 202211389484 A CN202211389484 A CN 202211389484A CN 115626631 A CN115626631 A CN 115626631A
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
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Abstract
A heat treatment process for carbon products adopts a plurality of heat treatment pools which are arranged continuously, the heating temperature of each heat treatment pool is set in a gradient type increasing mode in sequence, a roasted product is heated continuously in a subsection mode, and after the roasted product is heated to the highest temperature, the roasted product is cooled from a high-temperature pool to a low-temperature pool in sequence. The method has the advantages that the heat treatment quality of the carbon product can be effectively controlled, the whole heat treatment process is sequentially heated along the left side and then sequentially cooled from the right side, continuous assembly line operation is formed, and the working efficiency is improved; the mode of gradually cooling the heated high-temperature roasted product from the high-temperature heat treatment pool to the low-temperature heat treatment pool is adopted, so that the high-temperature roasted product can be forcibly cooled by the low-temperature heat treatment pool, the technical effect of improving the cooling rate of heat treatment and shortening the heat treatment period is achieved, the heat of the roasted product can be heated and recovered by the high-temperature roasted product in the low-temperature heat treatment pool, and the energy-saving technical effect of reducing the output power of a heating device is achieved.
Description
Technical Field
The invention belongs to the technical field of carbon product processing, and particularly relates to a heat treatment process for a roasted product of a carbon product.
Background
The carbon product is prepared by mixing, bonding and pressing raw materials such as carbon powder, coal powder, graphite, petroleum coke, coal pitch and the like into a roasted product, and then roasting and cooling the roasted product to obtain a finished product, wherein the finished product comprises various products according to the application and ingredients of the finished product, and the application is very wide. The traditional heat treatment process of the carbon product is to use a latticed roasting cellar for operation, put a roasted product into a latticed, then cover a certain amount of coal or quartz sand on the roasted product according to the roasting requirement, finally roast and heat by using natural gas, continuously fire for a certain time after raising the temperature to about 1000 ℃, finish high-temperature carbonization of the roasted product through covering materials, naturally place, cool and take out, and obtain the heat-treated carbon product.
The traditional carbon product heat treatment process has the problems that the temperature control degree is low in the heating process, the roasting kiln can only be operated once, the single heat treatment period generally needs 35-40 days, large-scale heat treatment operation is long in period, high in energy consumption and cost, the heat treatment efficiency is low, and the technical process does not meet the technical requirements of energy conservation and environmental protection.
Disclosure of Invention
The invention aims to solve the problem of high energy consumption caused by the fact that the traditional carbon product heat treatment process cannot continuously fire, and provides a novel process capable of continuously carrying out heat treatment on a carbon product.
In order to realize the purpose, the technical scheme adopted by the heat treatment process of the carbon product comprises the following specific steps:
the first step is as follows: n independent heat treatment tanks are sequentially and continuously arranged, a heating device is arranged on each heat treatment tank, heat treatment media are filled in the heat treatment tanks, and the heat treatment tanks are sequentially arranged as a 1 st heat treatment tank, a 2 nd heat treatment tank and a 3 rd heat treatment tank (8230), an N-2 nd heat treatment tank, an N-1 st heat treatment tank and an N-2 th heat treatment tank;
the second step is that: controlling a heating device on the heat treatment tank to carry out temperature control heating on the heat treatment medium in the heat treatment tank, and sequentially heating the temperature of the 1 st heat treatment tank to t 1 Heating the No. 2 heat treatment pool to t 2 And the temperature of the No. 3 heat treatment pool is heated to t 3 8230heating the N-2 th heat treatment tank to t N-2 N-1 th heat treatment tankHeating to t N-1 Heating the Nth heat treatment pool to t N Wherein the temperature of the 1 st heat treatment tank to the Nth heat treatment tank increases in a gradient manner in sequence, t 1 Is the minimum heating temperature of the heat treatment process, t N Controlling the operation of the heating device to ensure that the temperature of each heat treatment pool is continuously kept within an error temperature range for the highest heating temperature of the heat treatment process;
the third step: the prepared products to be roasted of the carbon products are sequentially placed into a 1 st heat treatment tank, a 2 nd heat treatment tank and a 3 rd heat treatment tank 8230in batches, and an N-2 th heat treatment tank, an N-1 th heat treatment tank and an N-2 th heat treatment tank for gradual heating treatment, and the process comprises the following steps:
(1) Immersing the roasted product into the heat treatment medium of the 1 st heat treatment tank for continuous heating T 1 Taking out the materials and immediately transferring the materials into a 2 nd heat treatment tank, and simultaneously immersing a next batch of products to be roasted in the 1 st heat treatment tank;
(2) Immersing the roasted product into the heat treatment medium of the 2 nd heat treatment tank for continuous heating T 2 Taking out the mixture and immediately transferring the mixture into a 3 rd heat treatment pool;
(N) heating the roasted product from the 1 st heat treatment tank to the Nth heat treatment tank in sequence according to the steps (1) to (2) until the roasted product is transferred to the heat treatment medium in the Nth heat treatment tank to be continuously heated T N Finishing the heating operation after hours;
the fourth step: taking out the roasted product heated in the Nth heat treatment pool in the third step, and sequentially putting the roasted product into an Nth-1 heat treatment pool, an Nth-2 heat treatment pool \8230, a 3 rd heat treatment pool, a 2 nd heat treatment pool and a 1 st heat treatment pool for gradually cooling and heat treatment, wherein the process comprises the following steps:
(1) The heated temperature in the Nth heat treatment tank is t N Taking out the roasted product and immediately transferring the roasted product into an N-1 heat treatment pool;
(2) Immersing the roasted product into the heat treatment medium of the N-1 heat treatment tank to reduce the temperature to t N-1 Then taking out and immediately transferring to an N-2 heat treatment pool;
(N) the temperature is reduced from the Nth heat treatment tank to the 1 st heat treatment tank in sequence according to the steps (1) to (2) until the roasted product is obtainedImmersing the substrate in the heat treatment medium in the 1 st heat treatment tank to reduce the temperature to t 1 Then taking out the product from the 1 st heat treatment tank, naturally cooling to normal temperature to finish cooling operation, and enabling the roasted product to become a finished carbon product;
the fifth step: and conveying and warehousing the cooled finished carbon products.
The number N of the heat treatment tanks is more than or equal to 2.
The heat treatment medium in the heat treatment pool is low-temperature molten salt or low-melting-point alloy.
The heating temperature t of the heat treatment medium in the heat treatment tanks from the 1 st heat treatment tank to the Nth heat treatment tank 1 -t N The configuration setting is carried out according to the ingredients and the types of the carbon products.
The heating temperature, i.e. t, of the heat treatment medium in the heat treatment bath 1 -t N The error of the temperature value is less than or equal to 15 ℃.
The heat treatment pools are divided into heating areas and cooling areas, the heating areas and the cooling areas of the heat treatment pools are arranged along the same side, the heating areas are arranged on the left side, and the cooling areas are arranged on the right side.
The heating device on the heat treatment pool adopts an electric heating device, and is provided with a temperature monitoring and controlling device for controlling and adjusting the temperature of the heat treatment medium in the heat treatment pool.
The invention has the beneficial effects that: the temperature of the heat treatment medium in each heat treatment pool can be accurately controlled, so that the heating carbonization temperature in the heat treatment process of the carbon product is accurately quantized, and the heat treatment quality of the carbon product is ensured; the whole heat treatment process is sequentially heated along the left side and then sequentially cooled from the right side, so that continuous flow line operation is formed, the carbon product heat treatment operation can be continuously carried out by feeding materials, the energy consumption of repeated cooling and heating of a heat treatment pool is avoided, the heat energy efficiency and the working efficiency of the carbon product heat treatment process are greatly improved, and the environment-friendly effect is improved; the mode of gradually cooling the heated high-temperature roasted product from the high-temperature heat treatment pool to the low-temperature heat treatment pool is adopted, so that the high-temperature roasted product can be forcibly cooled by the low-temperature heat treatment pool, the technical effect of improving the cooling rate of heat treatment and shortening the heat treatment period is achieved, the heat of the roasted product can be heated and recovered by the high-temperature roasted product in the low-temperature heat treatment pool, and the energy-saving technical effect of reducing the output power of a heating device is achieved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
in the drawings: the device comprises a low-temperature molten salt heat treatment pool 1, a 1 st heat treatment pool a, a 2 nd heat treatment pool b, a 3 rd heat treatment pool c, a 4 th heat treatment pool d, a heating zone 11, a cooling zone 12, an electric heating plate 2, a temperature sensor 3, a temperature monitoring controller 4, a heat treatment medium 5 and a roasted product hanging scaffold 6.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail with reference to the embodiments.
Example 1
With reference to the attached drawing 1, the heat treatment process of the carbon product comprises the following specific steps:
the first step is as follows: the four independent low-temperature molten salt heat treatment pools 1 are sequentially and continuously arranged, the side walls of the heat treatment pools are made of high-temperature-resistant heat-preservation materials, electric heating plates 2 and temperature sensors 3 are installed on the side walls, the electric heating plates 2 and the temperature sensors 3 are controlled to be started and connected through temperature monitoring controllers 4, low-temperature molten salt is contained in the heat treatment pools and serves as a heat treatment medium 5, the four independent low-temperature molten salt heat treatment pools 1 are sequentially arranged and set to be a 1 st heat treatment pool a, a 2 nd heat treatment pool b, a 3 rd heat treatment pool c and a 4 th heat treatment pool d, each low-temperature molten salt heat treatment pool 1 is divided into a heating area 11 and a cooling area 12 along the left side and the right side, and the heating area 11 and the cooling area 12 of the four low-temperature molten salt heat treatment pools 1 are sequentially arranged and set from front to back along the left side and the right side respectively.
The second step is that: the temperature monitoring controller 4 is used for respectively controlling the electric heating plates 2 on the four low-temperature molten salt heat treatment pools 1 to carry out temperature control heating on heat treatment media 5 in the low-temperature molten salt heat treatment pools 1, sequentially heating the 1 st heat treatment pool a to 240 ℃, the 2 nd heat treatment pool b to 370 ℃, the 3 rd heat treatment pool c to 750 ℃ and the 4 th heat treatment pool d to 1050 ℃, monitoring the temperatures in the four heat treatment pools in real time through the temperature monitoring controller 4, and controlling the heating temperatures of the electric heating plates 2 to ensure that the temperatures of the heat treatment pools are continuously kept in a range of +/-15 ℃.
The third step: loading the prepared carbon product to be roasted in batches into a hanging scaffold to prepare a roasted product hanging scaffold 6, and sequentially hanging the hanging scaffold from the left side into heating zones 11 in a 1 st heat treatment pool a, a 2 nd heat treatment pool b, a 3 rd heat treatment pool c and a 4 th heat treatment pool d for gradual heating treatment operation, wherein the process comprises the following steps:
(1) Immersing a roasted product hanging scaffold 6 into the heat treatment medium 5 of the 1 st heat treatment pool a, continuously heating for 4 hours at the temperature of 240 +/-15 ℃, then hanging out and immediately transferring to the 2 nd heat treatment pool b, and simultaneously immersing the next roasted product hanging scaffold 6 waiting for heat treatment into the 1 st heat treatment pool a;
(2) Immersing the roasted product hanging scaffold 6 into the heat treatment medium 5 of the 2 nd heat treatment pool b, continuously heating for 4 hours at the temperature of 370 +/-15 ℃, then hanging out and immediately transferring to the 3 rd heat treatment pool c;
(3) Immersing the roasted product hanging scaffold 6 into the heat treatment medium 5 in the 3 rd heat treatment pool c, continuously heating for 9 hours at the temperature of 750 +/-15 ℃, then hanging out and immediately transferring to the 4 th heat treatment pool d;
(4) And immersing the roasted product hanging scaffold 6 into the heat treatment medium 5 in the 4 th heat treatment tank d, and continuously heating for 11 hours at the temperature of 1000 +/-15 ℃ to finish the heat treatment heating operation.
The fourth step: and (3) hanging the roasted product hanging scaffold 6 which is heated in the 4 th heat treatment pool d in the third step out, and hanging the roasted product hanging scaffold into the cooling zones 12 in the 3 rd heat treatment pool c, the 2 nd heat treatment pool b and the 1 st heat treatment pool a from the right side in sequence to perform gradual cooling heat treatment operation, wherein the process comprises the following steps:
(1) And (3) hanging the roasted product hanging scaffold 6 which is heated in the 4 th heat treatment tank d and has the temperature of 1000 +/-15 ℃ and immediately transferring the roasted product hanging scaffold to the 3 rd heat treatment tank c:
(2) Immersing the roasted product hanging scaffold 6 into the heat treatment medium 5 in the 3 rd heat treatment pool c, cooling to 750 +/-15 ℃, then hanging out, and immediately transferring to the 2 nd heat treatment pool b;
(3) Immersing the roasted product hanging scaffold 6 into the heat treatment medium 5 in the 2 nd heat treatment pool b, cooling to 370 +/-15 ℃, then hanging out, and immediately transferring to the 1 st heat treatment pool a;
(4) And (3) immersing the roasted product hanging scaffold 6 into the heat treatment medium 5 in the 1 st heat treatment pool a, cooling to 240 +/-15 ℃, then hanging out from the 1 st heat treatment pool a, naturally cooling to normal temperature, and finishing cooling operation to enable the roasted product to become a finished carbon product.
The fifth step: and taking the cooled finished carbon product off the hanging scaffold, and carrying and warehousing.
Example 2
The carbon product heat treatment process as described in example 1, comprises the specific steps of replacing the low temperature molten salt heat treatment tank 1 with a low melting point alloy heat treatment tank, wherein the low melting point alloy is used as the heat treatment medium 5 in the heat treatment tank.
Claims (7)
1. The heat treatment process of the carbon product is characterized by comprising the following specific steps of:
the first step is as follows: n independent heat treatment tanks are sequentially and continuously arranged, heating devices are arranged on the heat treatment tanks, heat treatment media are filled in the heat treatment tanks, and the heat treatment tanks are sequentially arranged into a No. 1 heat treatment tank, a No. 2 heat treatment tank and a No. 3 heat treatment tank (8230), an No. 2 heat treatment tank, an No. 1 heat treatment tank and an No. N heat treatment tank;
the second step: controlling a heating device on the heat treatment tank to carry out temperature control heating on the heat treatment medium in the heat treatment tank, and sequentially heating the temperature of the 1 st heat treatment tank to t 1 Heating the second heat treatment tank to t 2 And 3, heating the temperature of the heat treatment pool to t 3 8230heating the N-2 th heat treatment tank to t N-2 Heating the N-1 th heat treatment tank to t N-1 Heating the Nth heat treatment pool to t N Wherein the temperature of the 1 st heat treatment tank to the Nth heat treatment tank is increased in a gradient manner in sequence, and t 1 Is the minimum heating temperature of the heat treatment process, t N Controlling the operation of the heating device to ensure that the temperature of each heat treatment pool is continuously kept within an error temperature range for the highest heating temperature of the heat treatment process;
the third step: the prepared products to be roasted of the carbon products are sequentially placed into a 1 st heat treatment tank, a 2 nd heat treatment tank and a 3 rd heat treatment tank 8230in batches, and an N-2 th heat treatment tank, an N-1 th heat treatment tank and an N-2 th heat treatment tank for gradual heating treatment, and the process comprises the following steps:
(1) Immersing the roasted product into the heat treatment medium of the 1 st heat treatment tank for continuous heating T 1 Taking out the materials and immediately transferring the materials into a 2 nd heat treatment tank, and simultaneously soaking the next batch of materials to be roasted in the 1 st heat treatment tank;
(2) Immersing the roasted product into the heat treatment medium of the 2 nd heat treatment tank for continuous heating T 2 Taking out the mixture and immediately transferring the mixture into a 3 rd heat treatment pool;
(N) heating the roasted product from the 1 st heat treatment tank to the Nth heat treatment tank in sequence according to the steps (1) to (2) until the roasted product is transferred to the heat treatment medium in the Nth heat treatment tank to be continuously heated T N Finishing the heating operation after hours;
the fourth step: taking out the roasted product heated in the Nth heat treatment tank in the third step, and sequentially putting the roasted product into an Nth-1 heat treatment tank, an Nth-2 heat treatment tank \8230, a 3 rd heat treatment tank, a 2 nd heat treatment tank and a 1 st heat treatment tank for gradually cooling and heat treatment, wherein the process comprises the following steps:
(1) Heating the Nth heat treatment tank to a temperature t N Taking out the roasted product and immediately transferring the roasted product into an N-1 heat treatment pool;
(2) Immersing the roasted product into the heat treatment medium of the N-1 heat treatment tank to reduce the temperature to t N-1 Then taking out and immediately transferring to an N-2 heat treatment pool;
(N) cooling from the Nth heat treatment tank to the 1 st heat treatment tank in sequence according to the steps (1) to (2) until the roasted product is immersed in the heat treatment medium in the 1 st heat treatment tank to be cooled to t 1 Then taking out the product from the 1 st heat treatment tank, naturally cooling to normal temperature to finish cooling operation, and enabling the roasted product to become a finished carbon product;
the fifth step: and conveying and warehousing the cooled finished carbon products.
2. The process for heat-treating a carbon product according to claim 1 wherein: the number N of the heat treatment pools is more than or equal to 2.
3. The process for heat-treating a carbon product according to claim 1, wherein: the heat treatment medium in the heat treatment pool is low-temperature molten salt or low-melting-point alloy.
4. The process for heat-treating a carbon product according to claim 1, wherein: the heating temperature t of the heat treatment medium in the heat treatment tanks from the 1 st heat treatment tank to the Nth heat treatment tank 1 -t N The configuration setting is carried out according to the ingredients and the types of the carbon products.
5. The process for heat-treating a carbon product according to claim 1, wherein: the heating temperature, i.e. t, of the heat treatment medium in the heat treatment basin 1 -t N The error of the temperature value is less than or equal to 15 ℃.
6. The process for heat-treating a carbon product according to claim 1 wherein: the heat treatment tank is divided into a heating area and a cooling area, the heating area and the cooling area of each heat treatment tank are arranged along the same side, the heating area is arranged on the left side, and the cooling area is arranged on the right side.
7. The process for heat-treating a carbon product according to claim 1, wherein: the heating device on the heat treatment pool adopts an electric heating device, and is provided with a temperature monitoring and controlling device for controlling and adjusting the temperature of the heat treatment medium in the heat treatment pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211389484.4A CN115626631A (en) | 2022-11-08 | 2022-11-08 | Carbon product heat treatment process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211389484.4A CN115626631A (en) | 2022-11-08 | 2022-11-08 | Carbon product heat treatment process |
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| CN115626631A true CN115626631A (en) | 2023-01-20 |
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| CN202211389484.4A Pending CN115626631A (en) | 2022-11-08 | 2022-11-08 | Carbon product heat treatment process |
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